Stm bluepill to bluepill communication

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Circuitogram

Joined Nov 11, 2024
1
I want to create a system in which I want to test my firmware.I want to pass a constant dc voltage signal from stm bluepill which acts as a throttle input to the other microcontroller, and by varying the duty cycle of the bluepill It can change the dc voltage level. The firmware working on 20khz frequency. I need to use a highpass filter.How can I do it
 
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