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Temperature controlled LED display

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  • undefined
    the_K @Rushmere3D
    last edited by the_K 22 Jul 2022, 10:47

    @rushmere3d

    This is what I've got to change my the colour of my 60 neopixels strip, the first and last ones show blue or red when when when the bed and heater is above 50C and change the brightness of the chamber.

    ; daemeon.g
    ; Adafruit #1426 8 led neopixel
    M150 X3
    if heat.heaters[1].current > 50 ; temp
    M150 R255 Y5 S1 F1 ; Red 255 Y =Bightness 0-31 S = Number
    M150 W255 Y5 S19 F1
    M150 W255 Y20 S20 F1
    elif heat.heaters[1].current <= 50
    M150 B255 Y5 S1 F1
    M150 W255 Y5 S19 F1
    M150 W255 Y5 S20 F1
    if heat.heaters[0].current > 50 ; temp
    M150 W255 Y2 S19 F1
    M150 R255 Y5 S1 F0
    elif heat.heaters[0].current <= 50
    M150 W255 Y2 S19 F1
    M150 B255 Y5 S1 F0
    1 Reply Last reply Reply Quote 0
    • undefined
      OwenD @Rushmere3D
      last edited by OwenD 22 Jul 2022, 10:59

      @rushmere3d said in Temperature controlled LED display:

      I would like the groups of 5 LEDs to change colour based on the tools temp, so say <30°C = Green, temps between 31-80°C = Orange and temps >81°C = Red

      Something like this would probably work.
      I don't have LED strips to test it on, so the M150 commands may need work.
      You could call this from daemon.g which runs every 10 seconds by default.

      What it SHOULD do is loop through each tool and for each tool get the highest heater temperature of the heaters assigned to that tool.
      Usually there's only one heater per tool, but may as well future proof.

      ;set_led_by_temp.gcode
      ; set neopixels based on heater temp
      ; define the LED (probably should be in config.g)
      M150 X1 Q3000000 ; set LED type to NeoPixel and set SPI frequency to 3MHz
      ; adjust these variables temps to suit
      var lowHeat = 45
      var medHeat = 60
      var highHeat = 80
      var pixelsPerTool = 5
      ; create other needed variables
      var thisHeater= 0
      var thisHeaterTemp = 0
      var upperTemp = 0
      var thisTool= 0
      var F=0 ;
      ; gather the temperatures
      while iterations < #tools ; loop through the tools
      set var.thisTool = iterations
      set var.upperTemp = 0 ; reset the upper temp
      while iterations < #tools[var.thisTool].heaters ; loop through the heaters on each tool and get max temp
      set var.thisHeater = tools[var.thisTool].heaters[iterations]
      set var.thisHeaterTemp = heat.heaters[var.thisHeater].current
      if var.thisHeaterTemp > var.upperTemp
      set var.upperTemp = var.thisHeaterTemp
      ; determine if there will be more commands in this loop
      if iterations = #tools - 1
      set var.F = 0
      else
      set var.F = 1
      ; Set the group of LEDs based on the temperature
      if var.upperTemp >= var.highHeat
      M150 R255 P255 S{var.pixelsPerTool} F{var.F} ; set pixels to red
      echo "Tool ", iterations , "set to red"
      elif var.upperTemp >= var.medHeat
      M150 R255 U128 P255 S{var.pixelsPerTool} F{var.F} ; set pixels to orange
      echo "Tool ", iterations , "set to orange"
      else
      M150 U128 P255 S{var.pixelsPerTool} F{var.F} ; set pixels to green
      echo "Tool ", iterations , "set to green"
      undefined 1 Reply Last reply 22 Jul 2022, 13:41 Reply Quote 1
      • undefined
        Rushmere3D @OwenD
        last edited by 22 Jul 2022, 13:41

        @owend Thanks!!! This worked perfectly 🙂

        Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

        1 Reply Last reply Reply Quote 0
        • undefined
          Nightowl
          last edited by Nightowl 22 Jul 2022, 17:59

          I really like all these little 'tweaks' people do to their machines!

          I'm going to learn from this to control a series of neopixel LEDs to change colour depending on the spindle speed for my CNC machine, and also have 3-colour LEDs to show my machine in Safe (Green: switched on but not in use/file not loaded), Pause (Orange) and Red (Running a project).

          It's all pointless, of course, because I can usually tell when the CNC is working (the noise is a good clue!) but it will help me to learn about coding! 👍

          Few things are more dangerous than taking the advice of someone who thinks he knows what he's doing.
          I'm still on my learning curve, so take everything I say with caution!

          RatRig 1075, Duet3 MB6HC, Sorotec SFM 1000 PV-ER milling motor, Hobbyist

          1 Reply Last reply Reply Quote 0
          • undefined
            OwenD
            last edited by OwenD 24 Jul 2022, 04:51

            I decided to do some more work on this as a bit of a project.
            I don't have any LED strips to test with as yet, but I believe this will work.

            I have created two macros.
            One that does all the hard work. (set_led_by_temp.gcode)
            It will gradually change colours based on the values you set for LOW, MEDIUM & HIGH heat.
            Above or below this values it will set a constant colour.
            The brightness may also be scaled depending on how close it is to the next break point.

            The other macro would be called from your slicer start code after setting the nozzle temp.
            It will keep calling the first macro until the target temp is reached and then will set the LED's to white.
            You could call it at the end of the print by creating a similar macro waiting for cool down.

            Macro to put in start code

            ; set_LED_while_heating.g
            ; Parameters can be passed for Tool number and target temp
            ; S = target temperature
            ; T = Tool number
            ; D = delay between checks
            ; example in Prusa slicer start code
            ; ####
            ; M568 P[current_extruder] R{"{heat.coldExtrudeTemperature+5}"} S[first_layer_temperature_0] A2
            ; M98 P"set_LED_while_heating.gcode" S[first_layer_temperature_0] T[current_extruder] D3
            ; M116
            ; ###
            var toolNumber = 0
            var targetTemp = 120
            var delay = 3
            var heaterNumber = tools[var.toolNumber].heaters[0]
            if exists(param.T)
            set var.toolNumber = param.T
            if exists(param.S)
            set var.targetTemp = param.S
            if exists(param.D)
            set var.delay = param.D
            while heat.heaters[var.heaterNumber].current < var.targetTemp
            M98 P"set_led_by_temp.gcode"
            G4 S{var.delay}
            ; done heating, so set to white
            M150 R255 U255 B255 W255 P255 F0 ; set pixels

            Main macro

            ; set_led_by_temp.gcode
            ; This macro sets neopixels based on tool heater temp
            ; It should be called from daemon.g to achieve continual updates
            ; or by another macro with a loop if you only want to change colours during heatup
            ;example macro called from your slicer start code before after temps, but before M116
            ; #####
            ;while heat.heaters[1].current < 120
            ; M98 P"set_led_by_temp.gcode"
            ; G4 S3
            ; done heating, so set to white
            ;M150 R255 U255 B255 W255 P255 F0 ; set pixels
            ; #######
            ; LED strip pixel count must equal number of tools * pixels per tool
            ; For multiple tools the neopixels must be daisy chained or a continuos strip
            ; The colour will gradually scale from one to the next.
            ; define the LED (should be in config.g as the value is remembered between calls)
            ;M150 X2 Q3000000 ; set LED type to NeoPixel bit banged type and set SPI frequency to 3MHz
            var RGBW = false ; set to true if LED is RGBW type, oherwise set to false
            var logging = true ; set to true if you want echos to appear in console to help see what the values are. Otherwise set false
            ; adjust these variable temps to suit requirements.
            var lowTemp = 30
            var medTemp = 70
            var highTemp = 120
            ; brightness will be scaled between lowBrightness and highBrightness according to how close it is the max for range
            ; eg. between low temp and med temp
            ; once over high temp it will scale between high temp and max heater temp as set in config.g
            ; to not scale brightness, set both values the same
            var lowBrightness = 100
            var highBrightness = 255
            ; number of pixels on the strip that are assigned to each tool e.g first five are tool 1, second 5 are tool 2 etc
            ; if only one tool is used, set to total number of led's on strip
            var pixelsPerTool = 5
            ; Common RGB colours (R,G,B)
            ; RED - 255,0,0
            ; YELLOW - 255,255,0
            ; ORANGE - 255,165,0
            ; BLUE - 0,0,255
            ; LIME - 0,255,0
            ; GREEN - 0,128,0
            ; MAGENTA - 255,0,255
            ; WHITE - 255,255,255
            ; OFF - 0,0,0
            ;adjust values following to achieve desired colors for each range
            ; this will be so much easier when we have arrays ;-)
            ; all values must be integers between 0 & 255
            ; high temp values (anything over high temp will be set to this)
            var highRed = 255
            var highGreen = 12
            var highBlue = 40
            var highWhite = 0 ; only used on RGBW type
            ;medium temp values
            var midRed = 200
            var midGreen = 128
            var midBlue = 20
            var midWhite = 40 ; only used on RGBW type
            ;low temp values
            var lowRed = 0
            var lowGreen = 255
            var lowBlue = 0
            var lowWhite = 60 ; only used on RGBW type
            ; cold temp values (anything under low temp will be set to this)
            var coldRed = 0
            var coldGreen = 0
            var coldBlue = 255
            var coldWhite = 0 ; only used on RGBW type
            ; ############################# SHOULD NOT NEED TO EDIT PAST HERE ################################
            ; create other needed variables
            var thisHeater= 0
            var thisHeaterTemp = 0
            var upperTemp = 0
            var thisTool= 0
            var F=0
            var maxTemp = 0
            var brightScale = 0
            var redValue = 0
            var greenValue = 0
            var blueValue = 0
            var whiteValue = 0
            var setBrightness = 0
            var redScale= 0
            var greenScale = 0
            var blueScale = 0
            var whiteScale = 0
            var lowValue = 0
            var highValue = 0
            ; sanity checks
            if (var.lowBrightness < 0) || (var.highBrightness > 255) || (var.highBrightness < var.lowBrightness)
            echo "Invalid brightness settings. Must be between 0 & 255. High must be > than low. Setting to defaults (Low 100, high 255)"
            set var.lowBrightness = 100
            set var.highBrightness = 255
            if (var.lowTemp <= 0) || (var.medTemp <= var.lowTemp) || (var.highTemp <= var.medTemp)
            echo "Invalid temp range setings - resetting to defaults (low=50, medium=130,high=180)"
            set var.lowTemp = 50
            set var.medTemp = 130
            set var.highTemp = 180
            if (var.logging != true) && (var.logging != false)
            echo "Invalid logging value- must be true or false"
            set var.logging = false
            ; gather the tool temperatures
            while iterations < #tools ; loop through the tools
            set var.thisTool = iterations
            set var.upperTemp = 0 ; reset the upper temp
            set var.maxTemp = 0 ; reset the max temp
            set var.lowValue = 0
            set var.highValue = 0
            while iterations < #tools[var.thisTool].heaters ; loop through the heaters on each tool and get max temp
            if var.logging = true
            echo "Checking tool", var.thisTool, "heater", iterations
            set var.thisHeater = tools[var.thisTool].heaters[iterations]
            set var.thisHeaterTemp = heat.heaters[var.thisHeater].current
            if var.logging = true
            echo "Heater", iterations, ". Temp =", var.thisHeaterTemp
            if var.thisHeaterTemp > var.upperTemp
            set var.upperTemp = var.thisHeaterTemp
            set var.maxTemp = heat.heaters[var.thisHeater].max
            if var.logging = true
            echo "Max temp of heaters is" , var.upperTemp
            ; determine if there will be more commands in this loop
            if iterations = #tools - 1
            set var.F = 0
            else
            set var.F = 1
            ; Set the group of LEDs based on the temperature
            ; high temp range so just set to high temp colour values, bt scale brightness up to max heater temp
            if var.upperTemp >= var.highTemp
            set var.brightScale = (var.highBrightness - var.lowBrightness) / (var.maxTemp - var.highTemp)
            set var.setBrightness = floor((var.brightScale * (var.thisHeaterTemp - var.highTemp)) + 0.5) + var.lowBrightness ;
            set var.redValue = var.highRed ;
            set var.blueValue = var.highBlue
            set var.greenValue = var.highGreen
            set var.whiteValue = var.highWhite
            if var.logging = true
            echo "Temp is > ", var.highTemp
            echo "RGB(W) values set to -" , var.redValue, var.greenValue, var.blueValue, var.whiteValue
            echo "Brightness set to", var.setBrightness
            ; medium range - colours will be scaled between lowtemp and medium tempas will brightness
            elif var.upperTemp >= var.medTemp
            set var.brightScale = (var.highBrightness - var.lowBrightness) / (var.highTemp - var.medTemp)
            set var.setBrightness = floor(var.brightScale * (var.thisHeaterTemp - var.medTemp) + 0.5) + var.lowBrightness ;
            set var.lowValue = min(var.highRed,var.midRed)
            set var.highValue = max(var.highRed,var.midRed)
            set var.redScale = (var.highValue - var.lowValue) / (var.highTemp - var.medTemp)
            set var.lowValue = min(var.highGreen,var.midGreen)
            set var.highValue = max(var.highGreen,var.midGreen)
            set var.greenScale = (var.highValue - var.lowValue) / (var.highTemp - var.medTemp)
            set var.lowValue = min(var.highBlue,var.midBlue)
            set var.highValue = max(var.highBlue,var.midBlue)
            set var.blueScale = (var.highValue - var.lowValue) / (var.highTemp - var.medTemp)
            set var.lowValue = min(var.highWhite,var.midWhite)
            set var.highValue = max(var.highWhite,var.midWhite)
            set var.whiteScale = (var.highValue - var.lowValue) / (var.highTemp - var.medTemp)
            if var.midRed < var.highRed
            set var.redValue = floor((var.redScale * (var.thisHeaterTemp - var.medTemp)) + 0.5) + var.midRed
            else
            set var.redValue = var.midRed - floor((var.redScale * (var.thisHeaterTemp - var.medTemp)) + 0.5)
            if var.midGreen < var.highGreen
            set var.greenValue = floor((var.greenScale * (var.thisHeaterTemp - var.medTemp)) + 0.5) + var.midGreen
            else
            set var.greenValue = var.midGreen - floor((var.greenScale * (var.thisHeaterTemp - var.medTemp)) + 0.5)
            if var.midBlue < var.highBlue
            set var.blueValue = floor((var.blueScale * (var.thisHeaterTemp - var.medTemp)) + 0.5) + var.midBlue
            else
            set var.blueValue = var.midBlue - floor((var.blueScale * (var.thisHeaterTemp - var.medTemp)) + 0.5)
            if var.midWhite < var.highWhite
            set var.whiteValue = floor((var.whiteScale * (var.thisHeaterTemp - var.medTemp)) + 0.5) + var.midWhite
            else
            set var.whiteValue = var.midWhite - floor((var.blueScale * (var.thisHeaterTemp - var.medTemp)) + 0.5)
            if var.logging = true
            echo "Temp is > ", var.medTemp, "but < ", var.highTemp
            echo "RGB(W) values set to -" , var.redValue, var.greenValue, var.blueValue, var.whiteValue
            echo "Brightness set to", var.setBrightness
            ; low temp range - colours will be scaled between cold tempand medium temp range, as will brightness
            elif var.upperTemp >= var.lowTemp
            set var.brightScale = (var.highBrightness - var.lowBrightness) / (var.medTemp - var.lowTemp)
            set var.setBrightness = floor(var.brightScale * (var.thisHeaterTemp - var.lowTemp) + 0.5) + var.lowBrightness ;
            set var.lowValue = min(var.midRed,var.lowRed)
            set var.highValue = max(var.midRed,var.lowRed)
            set var.redScale = (var.highValue - var.lowValue) / (var.medTemp - var.lowTemp)
            set var.lowValue = min(var.midGreen,var.lowGreen)
            set var.highValue = max(var.midGreen,var.lowGreen)
            set var.greenScale = (var.highValue - var.lowValue) / (var.medTemp - var.lowTemp)
            set var.lowValue = min(var.midBlue,var.lowBlue)
            set var.highValue = max(var.midBlue,var.lowBlue)
            set var.blueScale = (var.highValue - var.lowValue) / (var.medTemp - var.lowTemp)
            set var.lowValue = min(var.midWhite,var.lowWhite)
            set var.highValue = max(var.midWhite,var.lowWhite)
            set var.whiteScale = (var.highValue - var.lowValue) / (var.medTemp - var.lowTemp)
            if var.lowRed < var.midRed
            set var.redValue = floor((var.redScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5) + var.lowRed
            else
            set var.redValue = var.lowRed - floor((var.redScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5)
            if var.lowGreen < var.midGreen
            set var.greenValue = floor((var.greenScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5) + var.lowGreen
            else
            set var.greenValue = var.lowGreen - floor((var.greenScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5)
            if var.lowBlue < var.midBlue
            set var.blueValue = floor((var.blueScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5) + var.lowBlue
            else
            set var.blueValue = var.lowBlue - floor((var.blueScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5)
            if var.lowWhite < var.midWhite
            set var.whiteValue = floor((var.whiteScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5) + var.lowWhite
            else
            set var.whiteValue = var.lowWhite - floor((var.whiteScale * (var.thisHeaterTemp - var.lowTemp)) + 0.5)
            if var.logging = true
            echo "Temp is > ", var.lowTemp, "but < ", var.medTemp
            echo "RGB(W) values set to -" , var.redValue, var.greenValue, var.blueValue, var.whiteValue
            echo "Brightness set to", var.setBrightness
            ; cold temp range, so just set colour to cold value but scale brightness between zero and low temp value
            else
            set var.brightScale = (var.highBrightness - var.lowBrightness) /(var.lowTemp - 0)
            set var.setBrightness = floor(var.brightScale * (var.thisHeaterTemp - 0) + 0.5) + var.lowBrightness ;
            set var.redValue = var.coldRed
            set var.greenValue = var.coldGreen
            set var.blueValue = var.coldBlue
            set var.whiteValue = var.coldWhite
            if var.logging = true
            echo "Temp is < ", var.lowTemp
            echo "RGB(W) values set to -" , var.redValue, var.greenValue, var.blueValue, var.whiteValue
            echo "Brightness set to", var.setBrightness
            ; finally, set the LED strip to the desired colour and brightness
            if var.RGBW = true
            M150 R{var.redValue} U{var.greenValue} B{var.blueValue} W{var.whiteValue} P{var.setBrightness} S{var.pixelsPerTool} F{var.F} ; set pixels
            else
            M150 R{var.redValue} U{var.greenValue} B{var.blueValue} P{var.setBrightness} S{var.pixelsPerTool} F{var.F} ; set pixels

            set_led_by_temp.gcode set_LED_while_heating.gcode

            undefined 2 Replies Last reply 24 Jul 2022, 14:57 Reply Quote 1
            • undefined
              Rushmere3D @OwenD
              last edited by 24 Jul 2022, 14:57

              @owend That's awesome, I've not had a chance to try the new code yet because 1) it's still quite hot in my small workshop and 2) I don't currently use PrusaSlicer for my toolchanger so haven't changed the code for S3D yet.

              But I will give it a go.

              Thanks.

              Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

              1 Reply Last reply Reply Quote 0
              • undefined
                Rushmere3D @OwenD
                last edited by 26 Jul 2022, 13:15

                @owend

                Hey, had a go at using this today and It's not quite working. Below in my start gcode for single T3 printing, bare in mind on the toolchanger homing and ABL need to be done before a tool is picked up. What's happening is it basically get's to the point where the temp has been set and heating begins but even once at temp it just sits and does nothing but cycle through checking the tools/heaters.

                I have both macros in the macro folder for ref.

                M104
                T-1
                M140 S[first_layer_bed_temperature]
                ;M568 P0 A2 R[standby_temperature_delta] S[first_layer_temperature] ; set active and standby temps
                ;M568 P1 A2 R[standby_temperature_delta] S[first_layer_temperature] ; set active and standby temps
                ;M568 P2 A2 R[standby_temperature_delta] S[first_layer_temperature] ; set active and standby temps
                M568 P3 A2 R[standby_temperature_delta] S[first_layer_temperature] ; set active and standby temps
                M98 P"/macros/set_led_while_heating.g" S[first_layer_temperature] T[current_extruder] D3
                G28 ;
                G29 ; enable mesh
                M116

                Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

                undefined 2 Replies Last reply 26 Jul 2022, 13:20 Reply Quote 0
                • undefined
                  OwenD @Rushmere3D
                  last edited by 26 Jul 2022, 13:20

                  @rushmere3d
                  I'll have a look, but probably not before the weekend

                  undefined 1 Reply Last reply 26 Jul 2022, 13:29 Reply Quote 0
                  • undefined
                    Rushmere3D @OwenD
                    last edited by 26 Jul 2022, 13:29

                    @owend No problem, no rush.

                    Shall I try the set_led_by_temp as a daemon.g? rather than being called from a macro.

                    Thanks for your help.

                    Follow my adventures in 3D Printing, laser cutting and electronics. https://linktr.ee/Rushmere3D

                    undefined 1 Reply Last reply 26 Jul 2022, 20:12 Reply Quote 0
                    • undefined
                      OwenD @Rushmere3D
                      last edited by OwenD 26 Jul 2022, 20:12

                      @rushmere3d
                      You could call it in daemon.g
                      Perhaps set up a global variable so that you can only call it when you've set that variable to true.
                      So in your slicer have

                      set global.WarmUp = true
                      // set all temps etc
                      // do homing
                      Set global.WarmUp = false

                      Then in daemon.g

                      If global.Warmup= true
                      M98 P"path-to-macro.g"

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        OwenD @Rushmere3D
                        last edited by 30 Jul 2022, 01:04

                        @rushmere3d
                        The problem was that you did not have any tools selected and I was using the selected tool to determine which heater to monitor in the while loop.

                        This revised file will work with no tool selected.

                        ; set_LED_while_heating.g
                        ; Parameters can be passed for Tool number and target temp
                        ; S = target temperature
                        ; T = Tool number
                        ; D = delay between checks
                        ; example in Prusa slicer start code
                        ; ####
                        ; M568 P[current_extruder] R{"{heat.coldExtrudeTemperature+5}"} S[first_layer_temperature_0] A2
                        ; M98 P"set_LED_while_heating.gcode" S[first_layer_temperature_0] T[current_extruder] D3
                        ; M116
                        ; ###
                        var toolNumber = 0
                        var thisTool = 0
                        if exists(param.T)
                        set var.toolNumber = param.T
                        var targetTemp = 120
                        if exists(param.S)
                        set var.targetTemp = param.S
                        var delay = 3
                        if exists(param.D)
                        set var.delay = param.D
                        ;echo "Tool number is ", var.toolNumber
                        if var.toolNumber != -1
                        var heaterNumber = tools[var.toolNumber].heaters[0]
                        while heat.heaters[var.heaterNumber].current < var.targetTemp
                        M98 P"0:/macros/conditional_g_code_macros/set_led_by_temp.gcode"
                        G4 S{var.delay}
                        else
                        while iterations < #tools
                        set var.thisTool = iterations
                        ;echo "Testing heat.heaters[tools[" , var.thisTool, "].heaters[0]]"
                        if (heat.heaters[{tools[var.thisTool].heaters[0]}].state="standby")
                        while (heat.heaters[{tools[var.thisTool].heaters[0]}].current) < (heat.heaters[{tools[var.thisTool].heaters[0]}].standby)
                        M98 P"0:/macros/conditional_g_code_macros/set_led_by_temp.gcode"
                        G4 S{var.delay}
                        if (heat.heaters[tools[var.thisTool].heaters[0]].state="active")
                        ;echo "active"
                        while (heat.heaters[tools[var.thisTool].heaters[0]].current) < (heat.heaters[tools[var.thisTool].heaters[0]].active)
                        M98 P"0:/macros/conditional_g_code_macros/set_led_by_temp.gcode"
                        G4 S{var.delay}
                        ; done heating, so set to white
                        M150 R255 U255 B255 W255 P255 F0 ; set pixels
                        1 Reply Last reply Reply Quote 0
                        • undefined OwenD referenced this topic 2 Aug 2022, 06:51
                        • undefined OwenD referenced this topic 2 Aug 2022, 06:56
                        • undefined
                          Nightowl
                          last edited by Nightowl 8 Jul 2022, 08:07 7 Aug 2022, 08:06

                          @nightowl said in Temperature controlled LED display:

                          I'm going to learn from this to control a series of neopixel LEDs to change colour depending on the spindle speed for my CNC machine, and also have 3-colour LEDs to show my machine in Safe (Green: switched on but not in use/file not loaded), Pause (Orange) and Red (Running a project).

                          Any thoughts on this, please?

                          I was thinking of buying this 1m length (of 144LEDs/m) and cutting it to length, but isn't the current rating (20A) a bit high?

                          Thanks

                          Few things are more dangerous than taking the advice of someone who thinks he knows what he's doing.
                          I'm still on my learning curve, so take everything I say with caution!

                          RatRig 1075, Duet3 MB6HC, Sorotec SFM 1000 PV-ER milling motor, Hobbyist

                          undefined undefined 2 Replies Last reply 7 Aug 2022, 10:39 Reply Quote 0
                          • undefined
                            OwenD @Nightowl
                            last edited by 7 Aug 2022, 10:39

                            @nightowl
                            You will need an external 5v power supply for the LED's.
                            Wiring info here

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                            • undefined
                              dc42 administrators @Nightowl
                              last edited by 7 Aug 2022, 16:21

                              @nightowl the current consumption is up to 60mA per LED, times 144 for a 1m length is 8.64A maximum. So you will need a separate 5V PSU for them, but a 10A one will do.

                              Duet WiFi hardware designer and firmware engineer
                              Please do not ask me for Duet support via PM or email, use the forum
                              http://www.escher3d.com, https://miscsolutions.wordpress.com

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                              • undefined cosmowave referenced this topic 19 Jun 2023, 09:41
                              • undefined
                                Hugsy
                                last edited by 19 Jun 2023, 12:57

                                I strongly advise to not put any M98 inside daemon.g as it can disrupt the main DDARRing and cause stutter in the movement. What I usually do is copy the macro inside the daemon.g and even then some commands might disrupt the movement, at least not the whole macro will cause problems. Maybe we can queue the commands in a different G-Code queue with RRF3.5 to avoid all of this.

                                undefined 1 Reply Last reply 19 Jun 2023, 13:06 Reply Quote 0
                                • undefined
                                  dc42 administrators @Hugsy
                                  last edited by dc42 19 Jun 2023, 13:06

                                  @Hugsy said in Temperature controlled LED display:

                                  I strongly advise to not put any M98 inside daemon.g as it can disrupt the main DDARRing and cause stutter in the movement. What I usually do is copy the macro inside the daemon.g and even then some commands might disrupt the movement, at least not the whole macro will cause problems. Maybe we can queue the commands in a different G-Code queue with RRF3.5 to avoid all of this.

                                  The main issue with doing too much in daemon.g is contention for the SD card. Using M98 causes it to open the macro file, which involve several SD card accesses.

                                  Also there should be a delay command inside the while loop in daemon.g so that there are periods of time when daemon.g id not competing for resources. This delay should normally be at least 1 second, but more is better if you don't need daemon.g to react faster to changes.

                                  Duet WiFi hardware designer and firmware engineer
                                  Please do not ask me for Duet support via PM or email, use the forum
                                  http://www.escher3d.com, https://miscsolutions.wordpress.com

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