![]() ![]() ![]() I have made a custom PCB with an ATmega328p-au. Ex, you could set ICR1 to 1000 and get 16khz, and pass a number from 0 to 1000 to that analogWrite16() function instead of 0~65535 Void analogWrite16(uint8_t pin, uint16_t val)Īnd by changing ICR1 there, you can change what number - ie, you can count up to a lower number to get higher frequency. | _BV(WGM11) / mode 14: fast PWM, TOP=ICR1 / TCCR1A = _BV(COM1A1) | _BV(COM1B1) / non-inverting PWM / */ĭDRB |= _BV(PB1) | _BV(PB2) /* set pins as outputs / * Configure digital pins 9 and 10 as 16-bit PWM outputs. It only works on pins 9 and 10, as these are the only pins connected to the 16-bit timer. Here is an implementation of a 16-bit analogWrite(). Referrence: arduino uno - Increase PWM bit resolution - Arduino Stack Exchange This will allow you to use a number between 0 ~ 65535 with a sacrifice in max frequency of 244HZ If you need a higher resolution at the cost of frequency, you could use the 16 bit timer by adjusting registers. So with your circuit you would want to go with pulse with modulation. PWM can go from full on to full off and pulse to a specific duty cycle And so you don't have any more resolution but arduino can only process delays in 4us steps so 1000us/4us = 250 steps. If you had the proper motor controller you could request a higher resolutions. Notice that the pulse only lasts between 1ms and 2ms with a gap of ~20ms between You will need a motor controller module between it and the Pulse output of the uno. I bet you are confused about how a range from 1000us ~2000us will directly control a motor. What you need to know is the difference between PWM and motor.writeMicroseconds (1000~2000) ![]()
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