@pythoncoder has put together a library to do sensor fusion on the pyboard in MicroPython. It uses the Madgwick algorithm (quaternions); I've just started using it, and it seems to work pretty well - certainly faster than 350 mS.
https://github.com/micropython-IMU/micropython-fusion
-Bryan
Search found 348 matches
- Fri Jan 22, 2016 1:27 am
- Forum: General Discussion and Questions
- Topic: Implementing Kalman filter
- Replies: 7
- Views: 10394
- Thu Jan 21, 2016 3:14 pm
- Forum: MicroPython pyboard
- Topic: New pyboards
- Replies: 7
- Views: 6902
Re: New pyboards
The link to Adafruit is for the new pyboard v1.1, not for the pyboard lite. Adafruit doesn't seem to have the lite board yet.Turbinenreiter wrote:Adafruit!
https://www.adafruit.com/products/2390
- Wed Jan 20, 2016 5:16 pm
- Forum: MicroPython pyboard
- Topic: GSM module recomendation?
- Replies: 2
- Views: 3658
Re: GSM module recomendation?
Damien posted a year ago about using the Adafruit FONA module with the pyboard, but it didn't get any replies or follow-up:
http://forum.micropython.org/viewtopic.php?f=5&t=507
Maybe it's enough to get started?
http://forum.micropython.org/viewtopic.php?f=5&t=507
Maybe it's enough to get started?
- Wed Jan 13, 2016 8:33 pm
- Forum: MicroPython pyboard
- Topic: New build seems to have killed my Pyboard (now fixed)
- Replies: 23
- Views: 17812
Re: New build seems to have killed my Pyboard (now fixed)
@pythoncoder - Glad you got your board back! I'm mystified as to why it failed the first time. Just one of those things I guess. Yeah… there are always those random glitches that could turn out to be just about anything and then stubbornly refuse to repeat. ESD? Cosmic ray? (Supposedly it still happ...
- Wed Jan 13, 2016 6:07 pm
- Forum: MicroPython pyboard
- Topic: New build seems to have killed my Pyboard (now fixed)
- Replies: 23
- Views: 17812
Re: WARNING New build seems to have killed my Pyboard
One more thing - I have wondered what it would look like to have a chip fail by exceeding the flash write endurance capacity. The flash is nominally rated to 10,000 erase / write cycles - tough to get there in normal usage, but if an application is frequently writing to the flash sectors implementin...
- Wed Jan 13, 2016 5:57 pm
- Forum: MicroPython pyboard
- Topic: New build seems to have killed my Pyboard (now fixed)
- Replies: 23
- Views: 17812
Re: WARNING New build seems to have killed my Pyboard
@pythoncoder - Have you tried the hardware method to force booting into DFU mode yet? You power up the board (or use the reset button) with pin P1 / DFU connected to 3.3V; they are right next to each other on the lower-left corner of the pyboard, one row up from the bottom. You may have tried it alr...
- Sun Jan 10, 2016 6:58 pm
- Forum: General Discussion and Questions
- Topic: hardware debouncing
- Replies: 23
- Views: 26814
Re: hardware debouncing
Only for the switch press. The time constant for the switch release (the rise time) is set by the pull-up resistors.gratefulfrog wrote:I think it is the 1K resistor plus the 1uF cap that make the time constant, no?
-Bryan
- Sun Jan 10, 2016 6:47 pm
- Forum: General Discussion and Questions
- Topic: hardware debouncing
- Replies: 23
- Views: 26814
Re: hardware debouncing
Can anyone shed any light on why this works? I had the same thought. I haven't gone back to review the previous comments, but my initial question would be whether the internal pull-up is actually enabled. If it is, the additional 47k pull-up shouldn't be necessary. Is the pushbutton located far fro...
- Sat Dec 19, 2015 8:10 pm
- Forum: MicroPython pyboard
- Topic: Inverted Serial on pyboard
- Replies: 9
- Views: 8576
Re: Inverted Serial on pyboard
If you are going to use an RS232 level shifter that runs on 5V, do be careful that the out-going buffer will accept the 3.3V output from the pyboard as a logic high. I was about to hack something together this week using some MAX232N's that I had sitting around, only to look up the data sheet and di...
- Wed Dec 09, 2015 5:17 pm
- Forum: General Discussion and Questions
- Topic: Problems with Ultimate GPS Breakout Board
- Replies: 2
- Views: 3665
Re: Problems with Ultimate GPS Breakout Board
The GPS device should start transmitting NMEA sentences over the TX pin as soon as it is powered up; no antenna or satellite detection is required. (This is generally true of most common GPS devices that have async serial interfaces, but I know it to be true for that particular one.) If the GPS devi...