MicroPython Forum (Archive)

running power consumption
(series 10 Ohm resistor)

deepsleep power consumption

I have made new ultra low power consumption pybL board.

feature

• STM32L476RG microcontroller
• USB type-c
• Ultra Low Power Consumption with current test interface
• optional SPI flash

It maybe conflict with ST driver if you install ST software before. Please delete the device in device manager then insert USB again.

I have made a demo board of STM32L476, to test power consumption in different mode. I have add a 10ohm resistor in vcc, calculating power consumption by measuring voltage in resistance. demo board 0.jpg running mode 2.jpg lightsleep mode 3.jpg deepsleep mode (below 1uA) 5.jpg Above data are for refe...

ESP32 is powerful, but STM32 is more easy to customized, with more pins and features.

I am plan to make a new pyboard with STM32L4xx, power consumption in deepsleep mode is less than 1uA.

Just do factory reset to restore files. Please remember eject the disk before disconnect usb.

http://docs.micropython.org/en/latest/p ... tory-reset

I found the problem is cause by ldo, I increase capacitance, and it work now.

My define:

I have diy a STM32L476RG board, with a 32KHz crystal and 1Mbytes external flash. If I not using external 1Mbyte flash, it works fine. If I enable external flash, after upgrade firmware with ST dfuse util and click "leave DFU mode" button, it works and can read/write 1Mbytes pyb flash. But when I dis...

re-init I2C has no effect,