I had a similar idea last winter: Imagine, having about 25 different PWM sections in the Nano and using it to not only control LEDs in different modes, but also relays and other stuff in some fashion of a sub-program.
It's no competitor for the developing system using meta-commands and variables, but could be useful to trigger a lot of stuff with just one PWM-output of the Duet.
/Julien
Tbh i dont see any isolation on this board aside the "isolation of load and control area" via the relay itself.
You have some flyback diodes on the control side but thats it. the black thingys are just transistors. You could put some 3V3 on the VCC pin, but that has to be at least 500mA or so because it is used to drive the coil of the relay. DO NOT try to drive this board with the IO-pins itself, the current draw is too high.
If you want real opto-isolation (which is preferable), you should use a board like this one:
Keep you eyes open for the bulky black boxes with two terminals on each side. Those are the optocouplers.
Greetings from sunny germany,
Julien
@OwenD said in Finding out names of parameters and variables:
Changed example to use M190
And this was the point.
Your adaption of M190 doesn't work, but: I figured out a solution.
Taking the subtraction into a seperate variable makes it work. I think, you can't calculate inside a G or M-Command.
Thanks a bunch to you guys, now i know the syntax, and how to get the parameters and declaring and using variables.
It would be very helpful, if i wouldn't have overlooked the G-Codes in the Dozuki and the very good PDF-Manual, that is pinned on top of this category (my bad)...
Here is my working example:
while (heat.heaters[0].active > 60) && (heat.heaters[0].current > 60) && (heat.heaters[0].state = "active")
var cooltemp = {heat.heaters[0].active}
set var.cooltemp = var.cooltemp -1
M190 P0 R{var.cooltemp}
echo "wait"
G4 S60
echo "cooldown finished"
I will expand upon it and make it more versatile, ex. add in a real cooldown funktion, that works for ABS.
Edit: Oh yeah, and i had to update everything to 3.3RC2 or course.
@fcwilt said in Designing a PWM to Analog mini board for fans:
You asked for a PM but I don't know what that is.
PM = personal message, so just chat
/Julien
According to the documentation the fuse should be intact, because all other temps are working properly.
Why could it read open circuit?
Stupid me has had a connection issue, where i had the sensor between, VSSA and VAREV and the pullup between VSSA and input7...
Everything is working fine now, thanks a bunch alan!
@tenaja
The name of the endstop doesn't change, no matter what is connected to it.
You can look all the (with the current config.g) addressable parameters and variables under
There you have to activate the object model browser plugin. After that, it appears under the settings-tab.
/Julien
@Egon-Net said in Designing a PWM to Analog mini board for fans:
Anyone wants to betatest a board from this first batch once arrives?
Meine Platine ist angekommen, sieht wirklich ordentlich aus.
/Julien
Still testing, should be ready tomorrow or wednesday.