MicroPython Forum (Archive)

Did you search for a suitable driver for the USB/UART chip of the Wemos D1 Mini? It is a CH340G. I faintly recall that on my stone age OS-X laptop I once had to install a driver for the ch340 device. I have it on my machine, found it by googling. I have attached it. Most of the Zip is a one page PDF...

Th eWemos D1 mini has a built-in resistor divider of 100k + 220k, which changes the analog range at the board level to 0-3.2V. This is intended as support for users, in your case it is bad. The impedance is way too low for a piezo sensor. You have either to use a buffer amplifier or remove the 100k ...

The target address for loading must be 0x1000, not 0, e.g. esptool.py -p com10 -c esp32 -b 460800 erase_flash esptool.py -p com10 -c esp32 -b 460800 write_flash --flash_size=detect 0x1000 file.bin For flashing, the speed can be higher. The default is 460800, but can indeed also be lower at the rates...

Why does mem_info() on your device show only ~73k. The mem_info() on the device of @dhylands shows about 100k, the same as mine.

Like Arduino, by default print statements output to the serial interface, and you cann see them e.g. a terminal emulator like putty or screen or picocom. If your questions is about the Arduino IDE, please look at the discussion about suitable IDE's. There are quite a few, and everyone has a favorite...

It is controlled by different software: Erase and flash is done by the espressif bootloader, while file upload is done by the MicroPython firmware.

I had one LOLIN32 where the CP2104 was poorly soldered, and a LOLIN32 pro which crashes with the Pycom or micropython.org firmware, not immediately, but after a while. It works with the loboris firmware. Replacing the flash chip did not help. A second LOLIN32 pro runs fine.

We need a little bit more "flesh to the bones" to understand. What do you expect and what do you get (You mention: 3)? How fast are the transitions you want to catch? Which sensor are you using and how do you interface it to the board. Which board are you using? And, even it may not be important her...

micropython/ports/nrf/modules/machine/pin.c
nrf_gpio_cfg() is called in there to configure the GPIO pin

maybe is should be:
python webrepl_cli.py -p password 192.168.4.1 "import machine;machine.reset ()",