Using an Uno r4 Minima, I got a BLDC to spin with an ESC by switching the signal pin from D7 (non-PWM) to D9 which is PWM-enabled. I don't understand why this worked. I wrote my own 50Hz PWM sketch using digitalWrites HIGH and LOW and never using analogWrite. When I use a pin purely digitally, I pr…

[image] inventorforrent: why does it need to be connected to a PWM pin What creates the "need"? You have a way to do what You want it looks like? Please read and use this: How to get the best out of this forum - Using Arduino / Project Guidance - Arduino Forum Words and telling about about …

That was the question. I boiled it down to the relevant issue -- with a non-PWM pin, fail; with PWM pin, success. I made absolutely no other changes to the circuit or the code. I was hoping that someone with knowledge and/or experience with ESCs could explain why a device that expects a digital sig…

[image] inventorforrent: I wrote my own 50Hz PWM sketch using digitalWrites HIGH and LOW Post that code, You don't seem to understand how servo signals work, they are not the typical PWM waveform.

Ok, here is my code. I understood that the ESC is expecting a 50Hz PWM signal with where the on phase is 1 to 2 ms. (1000 to 2000 us). This code didn't make the motor spin when the pin was 7, but did when the pin was 9. Please tell me what I don't understand. Thanks const int SERVO = 9; uint32_t …

Servos and ESCs do not have to be connected to a PWM pin. Did you try it with the Arduino Servo library? Did you "arm" the ESC? Which ESC? Post link to datasheet or brand name and EXACT part number or seller's web page.

Servos and ESCs do not have to be connected to a PWM pin. I thought so, too. I was looking for insight on why this appears to not be true. Did you try it with the Arduino Servo library? Yes, it worked with the code as written. For my homemade PWM, it did not work when SERVO was pin 7, but did work…

Does ESC for BLDC motor require a PWM pin?

Other Hardware Motors, Mechanics, Power and CNC

Wawa April 30, 2024, 12:25am 8

The current Servo library has issues with the Uno R4.
Post 13 in this thread seems to solve it.
Leo..

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Does ESC for BLDC motor require a PWM pin?

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