Julien
Looks like you have a winner. Still two things to work on : force the PWM output to 0V at boot up and find out why the reptition counter register and the associated registers of TIM1 have trouble to be updated.
Also I should find the proper timming for the PWM modes.
the second revision could use a 5V microcontroller to avoid having a 5v regulator for a ridiculous cmos buffer. There's a DPACK on the board because I have a tray full of them but a SOT223 would do the job
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