MicroPython Forum (Archive)

If you not set addr parameter in LCD1602, it will auto detect address. You may try

i2c = I2C(1, sda=Pin(12), scl=Pin(14))
LCD = LCD1602(i2c, 39)

machine.UART is not support RXD irq feature, it will brings some difficulties to uart programming in some cases. irqUART give a alternative solutionuse, it use pin irq instead of uart irq. irqUART is simple, small and fast. irqUART was tested on pyboard and esp32. demo.jpg Usage define user RXD irq,...

You need set EWUP1 bit in registry PWR_CR3.

circuitpython is support ESP32-S2, but micropython doesn't.

The most problem for microbit is ramsize, so don't run complex task on it.

And you may try to simplify program functions and modules code to save memory.

Yes, the loading order will do affect, maxiam loading size is less than half of the free memory, so loading large file first.

microbit's ram size and flash size is small, so if import too many modules or large modules, it will cause memory error. You may try remove some unused code, use tab instead of leading blanks to save memory. To improve the calculation accuracy of altitude, it is necessary to sample many times and ca...

You can set the WKUP mode by modify PWR register EWUP bit directly.

pyESP32 is make by myself, use ESP32-WROVER with 4M psram.

• USB type-c interface
• USB power and charge
• High efficiency DC/DC power supply
• on board USB/TTL converter
• one click upgrade firmware
• microSD slot
• low cost
• open hardware

My ESP32 board, with microSD slot.