Search found 43 matches

by UltraBob
Wed Jul 11, 2018 1:33 am
Forum: Announcements and News
Topic: MicroPython running "bare metal" in the browser via unicorn.js
Replies: 9
Views: 31662

Re: MicroPython running "bare metal" in the browser via unicorn.js

I just came by to look at micropython again after a long time away, and it is pretty great to see some of the progress. The ability to run demo code online is extremely cool. Unfortunately, the servo demos seem not to be working at the moment. No errors, just nothing actually moves. When I put in so...
by UltraBob
Thu Aug 28, 2014 8:24 am
Forum: General Discussion and Questions
Topic: Control Speed of DC Motor
Replies: 25
Views: 16950

Re: Control Speed of DC Motor

Dave: I'm trying to control something with these exact motors in it: Even small motors like these: http://www.pololu.com/product/114/specs have a stall current of 2.1A so you want your motor driver to be able to drive that much current. Something like http://www.pololu.com/product/1212 would work fo...
by UltraBob
Tue Aug 12, 2014 8:10 am
Forum: General Discussion and Questions
Topic: Trying to use timers to avoid a blocking loop
Replies: 15
Views: 8309

Re: Trying to use timers to avoid a blocking loop

These are all really helpful and enlightening. I'm trying to get a week ahead on coursework for an online class I'm taking to accommodate vacation next week. If I can get that done, the next thing on my list is to dive into these and explore them thoroughly.

Thanks!
by UltraBob
Tue Aug 12, 2014 1:58 am
Forum: Development of MicroPython
Topic: Documentation
Replies: 8
Views: 4335

Re: Documentation

and thanks for pointing out those github issues, it was good to read through those.
by UltraBob
Tue Aug 12, 2014 1:41 am
Forum: Development of MicroPython
Topic: Documentation
Replies: 8
Views: 4335

Re: Documentation

pfalcon, that is true if you want the documentation for the board to be accessible only to microcontroller experts. Personally, I find things like pyb.sync() Sync all file systems. To be pretty ambiguous, at least to someone unfamiliar with filesystem operation code. It seems like a little elaborati...
by UltraBob
Mon Aug 11, 2014 7:25 am
Forum: General Discussion and Questions
Topic: Reading a temperature value from a TMP36 sensor
Replies: 16
Views: 9602

Re: Reading a temperature value from a TMP36 sensor

OK, I think I get it now. Thanks for humoring me on the long path there. :oops:
by UltraBob
Mon Aug 11, 2014 5:34 am
Forum: General Discussion and Questions
Topic: Reading a temperature value from a TMP36 sensor
Replies: 16
Views: 9602

Re: Reading a temperature value from a TMP36 sensor

OK, I just tried to sit down with the datasheet and figure out how all this stuff reconciles, and it seems like what I suspected is true, must be true. Please correct me if this is incorrect: 25 degrees Celsius on this particular sensor is equal to 750mV and it has a scale factor of 10mV / degree Ce...
by UltraBob
Sun Aug 10, 2014 3:29 pm
Forum: General Discussion and Questions
Topic: Trying to use timers to avoid a blocking loop
Replies: 15
Views: 8309

Trying to use timers to avoid a blocking loop

I'm trying to use a timer to update an lcd regularly with information from a temperature sensor, and to therefore better understand how to work with the board. Here is part of my code: tempPin = pyb.ADC(pyb.Pin.board.X11) def getTemp(pin): temps = [] for i in range(100): tempReading = pin.read() tem...
by UltraBob
Sun Aug 10, 2014 1:43 pm
Forum: General Discussion and Questions
Topic: SD Card not mounting on computer or on board
Replies: 9
Views: 4925

Re: SD Card not mounting on computer or on board

Even a delay of 1 millisecond seems to work. I suspect that running anything before setting usb_mode would have a similar effect.
by UltraBob
Sun Aug 10, 2014 1:32 pm
Forum: General Discussion and Questions
Topic: SD Card not mounting on computer or on board
Replies: 9
Views: 4925

Re: SD Card not mounting on computer or on board

OK, This worked, here is my full boot.py: # boot.py -- run on boot-up # can run arbitrary Python, but best to keep it minimal import pyb #pyb.main('main.py') # main script to run after this one #pyb.usb_mode('CDC+MSC') # act as a serial and a storage device #pyb.usb_mode('CDC+HID') # act as a serial...