Duet Buddy - a proof of concept remote monitor

[zapta]

Thanks Danal. I am currently using '/rr_status?type=3' but this can be configured in the M5Stack SD card config file to any url. Picked =3 because this is what my DWC keeps polling.

Currently the response parser looks for these json fields:
status, fractionPrinted, coords.xyz[2], temps.current[0] and temps.current[1]. If RRF3 has them then it work with no change. Otherwise, adding them to the parser should be easy.

Response parser is straight forward and anybody make changes for RRF3 please send me a pull request.

https://github.com/zapta/misc/blob/master/duet3d_buddy/arduino/duet_parser.cpp

[bricor]

@zapta I just set one up. Fairly straight forward, Monitoring a print job as I'm typing this. I may have missed it, is there a way to program the buttons to pause or stop the current job or does it only monitor the printer (one way device)? Thank you, it's a neat little device.

[zapta]

@bricor, awesome!!!

Currently the buttons are not used but shouldn't be too difficult for any with some programming experience to program them to do things, for example, sending gcode commands to the printer.

Here is a challenge, the first person that will program a button to send any command to the duet will the respect of the community and an amazon gift card of $25 (e.g. for a spool of filament). Challenge closes April 30. Please report your success here and ping me.

[bricor]

@zapta I really apprecite the effort. I could only imagine what it took to put this together. For me, it was a challenge to put the bits and pieces in place to go from plugging in the usb cable to having a functioning device. Not difficult, but a challenge. I hope to figure out what you did here and the whole c programming stuff. Need to be able to toggle between machines (ip addresses) as well

[zapta]

@bricor, I plan to look for ways to simplify the deployment for people that don't want to deal with Arduino. M5Stack has a software tool called M5Burner and another option is to use the esptool program directly. Need to figure those out or possibly somebody here can come with a simple recipe to 'burn' the Duet Buddy firmware.

[bricor]

@zapta I should’ve said fun challenge. Rewarding type

[richardmckenna]

dammit!!! you guys have just made, nay, forced me to buy this!. Grrrrrr

M5Stack and Battery module on their way.

[tekkydave]

I have one on order from Bangood. Ordered the Grey one at £29.53 as it has the motion sensor built in.

[jay_s_uk]

I ordered the grey one too from aliexpress for £28.51.
Still waiting for it to get dispatched due to the "extended" chinese new year.
Sounds as though that won't happen till around the 18/02

[richardmckenna]

@tekkydave ah I went with this one https://www.amazon.co.uk/MakerHawk-Development-Bluetooth-Expandable-Compatible/dp/B07M71ZG6N which has the built in MPU9250 - £13 more but I get it tomorrow

[jay_s_uk]

@richardmckenna thats the grey one

[zapta]

The github repository has now a script to download the firmware to a M5Stack Core. For now it's only for windows but writing a similar shell script for Mac or Linux should be easy.

With this script, the Arduino IDE is not needed anymore (unless if you want to make code changes) and it just requires the Silicon Labs USB/Serial driver (available at m5stack.com and silabs.com).

https://github.com/zapta/misc/tree/master/duet3d_buddy/release

Please let me know howit works and feel free to send me pull requests.

[tekkydave]

It's arrived

[hayseed_byte]

Very cool project!

Is there a way to do something similar but display the status of multiple printers on a computer monitor? Maybe with the use of a raspberry pi? I have nine printers that I'd like to monitor from another room but I don't want to buy nine of those.

[Phaedrux]

@hayseed_byte Perhaps something like this?
https://github.com/DanalEstes/MultiDuetWebMonitor

[hayseed_byte]

@Phaedrux That's perfect. Thanks! Don't know how I haven't come across that.

[Danal]

I've never tried it, but that should run just fine in a Pi browser. Let me know if it does not.

PM here, or danal (dot) estes (at) gmail (dot) com

[richardmckenna]

@zapta any chance you could move the duet buddy code to its own repo? It would make it easier to fork without pulling all your other misc stuff as well

[richardmckenna]

I did something!

I added a battery level indicator and the printer name. Strangely the M5Stack API only returns the battery level in increments of 25, not sure if there is a way to get round this by skipping the M5Stack API method and going straight to requesting it from the I2C. Will have to look into it more, but from what I can discern from the basic docs and the Chinese datasheet for the IP5306 it only returns 1 of 4 values depending on the voltage range.

This is the current method in the API:

// Return percentage * 100
int8_t POWER::getBatteryLevel() {
  uint8_t data;
  if (M5.I2C.readByte(IP5306_ADDR, IP5306_REG_READ3, &data) == true) {
    switch (data & 0xF0) {
      case 0x00:
        return 100;
      case 0x80:
        return 75;
      case 0xC0:
        return 50;
      case 0xE0:
        return 25;
      default:
        return 0;
    }
  }
  return -1;
}

I also don't quite know what is happening with the switch statement and data & 0xF0but that's just my lack of C++ knowledge and IC programming. So if someone can educate me that would be great

I'm going to try adding the charging status as well for when it is plugged in and maybe tweak the layout a bit, then if someone can test it, I'll create a pull request to Zapta's original

[zapta]

@richardmckenna, very nice!

The IP5306 seems to have only 25% increments for the LEDs and possibly the IP5306_I2C has the same resolution but with I2C interface instead of LEDs. Hard to find information about the IP5306_I2C.

M5Stack Schematic
http://community.m5stack.com/assets/uploads/files/1515402963959-97994060-2969-49dc-ad9c-7b3887d95a17-image.png

IP5306 (non I2C) Datasheet
https://datasheet.lcsc.com/szlcsc/1809201029_INJOINIC-IP5306_C181692.pdf

The expression (data & 0xF0) returns the 8 bit value of 'data' with the four right bits forces to '0'.

BTW, the two temperature fields in your picture seems to have extra characters. Is it intentional?