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mjuhanne / fyrtur-motor-board

Custom firmware for the STM32 based IKEA Fyrtur roller blind motor board
MIT License
111 stars 12 forks source link

STM32 board dead #26

Open no-compromise opened 1 year ago

no-compromise commented 1 year ago

Hi, first wanna tell you that its really nice work your custom firmware to stm32 ikea fyrtur blind roller. But Im writing you for some help, my blinds with stock fw suddenly stop working (no LED, completely dead), so i decide to write your latest 0.87 5rpm FW into it. It works and blinds started working, but only for quite short time, and again died. I take some measurement, and when i disconnect STM32 board from Zigbee board, Zigbee is working (LED blinks when pairing..) but when I connect STM32 motor board, LED turns on for about 1sec and then all dies. I measure source voltage from batt and after that second it drops to 1.7V. Also tried power STM32 board on its input with bench source, and after 1sec it starts drawing 2.3AMPS!! for abou half sec and then it cuts off to 0A. Motor tested separately, works like a charm. Its possible that on STM32 motor board is some short circuit or something? When i try to flash some older stock firmware i figured out that it has ~180K , but yours FW has ~32K in size, dont know how to test old stock FW... If you could help me in this way i will appreciate it a lot. Thanks. Andrej

pannlala commented 1 year ago

I had the same issue when I flashed a blank chip with just the custom firmware. Download the original firmware from: https://github.com/fhempy/fyrtur-motor-board

!. Erase your chip

  1. flash the original firmware (if you dont have your own backup)
  2. Flash the custom firmware as instructed in the main page unless you don't just want to use the original firmware

I had one motor with problems also suspecting one of the FET transistor is blown.