I have a tilt bicopter that has two servos, power schematics as the pic. One Arduino Nano, an AMS1117 3.3v regulator, two servos provided with 5V by a mini 360 regulator The Lora module runs on the 3.3V from Nano and AMS1117 3.3v regulator. [image] The 5V power line is unstable, causing the rea…

I detach interrupts from Lora DIO pins 1ms early. It solves the problem of servo pwm signal being chopped 500us occasionally. Power jitter still not subside after adding bypass capacitors.

LoRa Causes Unstable Power and Induces Servo Jitter

Other Hardware General Electronics

Paul_KD7HB October 31, 2021, 1:01am 4

See if the regulator input voltage ever gets below the minimum for the regulator. 4.75V ≤ VIN ≤ 12V from the data sheet.
Paul

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LoRa Causes Unstable Power and Induces Servo Jitter

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