MicroPython Forum (Archive)

Thank you for the detailed answer! Currently I'm using either a phone charger, or a LiOn power bank, so the 5V is guaranteed and stable, just like you said. The Q1 or B1 in the schematics is the RTC battery (bottom right CR1220 lithium cell on the board). It's designed to be a backup 3V power source...

Mine is definitely a VE board, and yes, got the antenna going outwards, as you said. So the pins seem to be declared correctly: cfg = {'spi':1, 'miso':'PB4', 'mosi':'PB5', 'sck':'PB3', 'csn':'PB7', 'ce':'PB6'}, and I'm still getting that OSError. So what's wrong with my code? Is the IRQ pin supposed...

I'm trying to use the NRF24L01 chip with the STM32F407xx black board. I was checking the test script here: https://github.com/micropython/micropython/blob/master/drivers/nrf24l01/nrf24l01test.py - if I run micropython.platform, the board comes up as "pyboard", but it's clearly not pin-compatible. Qu...

Hello all, I'm very happy with the STM32F407VET black board I got and managed to install Micropython, thanks to the excellent explanation and work by mcauser (https://forum.micropython.org/viewtopic.php?f=12&t=3086&hilit=f407). What I can't figure out, though, is how to power the board, other than t...

Why does this happen, what is the mechanism behind the creation of these "files"? I ran into this a few times and I thought the reason might have been some error that occurred while my script was writing into a file: is that it? Or it "just happens sometimes"? Is it a general MP problem or specific ...

OK, so this time it stayed on and working all night, no problems. This morning I connected through WebREPL and it did print to the terminal as expected. Also the log file shows that it never stopped doing it's job. At the beginning last night, when still connected through WebREPL, I noticed that it ...

[quote=jimmo post_id=37860 time=1562135126 user_id=3071] Just so I understand, when it stops, you can still connect with webrepl? i..e you just get the >>> prompt directly? The board isn't locking up or anything, just that your script is no longer running? [/quote] That's a good question and frankly...

OK, so it must have been a hardware problem, I suppose... the board ran for seven days straight, plugged into a phone charger. It recorded everything, including a few "127.94 degrees", and a really weird reading from Tiny RTC, where at midnight it correctly figure out it was the next day, but the mo...