MicroPython Forum (Archive)

Thanks for response. I agree one timer could generate the 50Hz, how is the duty cycle generated, in software? The documentation is recommending the use of timers so it is all handled for you in hardware. When the channel is in PWM mode, the corresponding pin is assigned automatically, therefore ther...

I hate auto correct, IRQ not Iraq !


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Hi, During this Covid 19 lockdown I have been trying to finish my I completed projects. When I first received my WIPY I tried building a bob the biped robot but never completed it. So, I have resurrected my WIPY and updated to the latest firmware. I found some great Arduino code and decided to use t...

Thanks for the responses, I went with Jimmo's suggestion and have managed to control 136 leds without it crashing.

On to my next problem.

Steve

There is a small chance I have found a problem with the way bytearray objects are created on the microbit. Background: I purchased a http://rasp.io/inspiring/ set of leds when the kickstarter was launched a couple of years ago. They are basically SK9822 leds in various shapes, straight 8, triangle o...

Progress to date: 1 controlled led using Blynk 2 controlled a single servo so now I am moving on to control 4 servos, as with another post I want to use my WiPy for a Bob the Biped robot. I have looked at the expansion board schematics and if I understand them correctly I can power the expansion boa...

got my code to work,
mode should be Pin.ALT, not Pin.OUT

I think I need my own forum to post my questions, because as soon as I post a question I manage to fix it! g=Pin('GP11',mode=Pin.OUT, alt=3) should be g=Pin('GP11',mode=Pin.ALT,alt=3) obvious once you know so here is some simple code I have used to drive my servo between the zero and 180 position. f...

I am trying to use GP11 as a PWM output to control a servo motor. Based on the pinout and alternate functions table I should use alternate function 3. So I have tried the following in the REPL >>> from machine import Pin >>> g=Pin('GP11',mode=Pin.OUT, alt=3) Traceback (most recent call last): File "...

I have finally got the time to use my WiPy and want to use it to drive some servos, I have only had time for a quick look at the documents and it is going to be a few days before I can try it out. So I thought I might save myself some time by posting my understanding of PWM on the WiPy and (politely...