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Results tagged with pwm
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user 6628
PWM is a form of signal modulation that allows digital output to approximate an analog signal. Use this for questions about using the PWM pins (marked with ~).
1
vote
Accepted
how to change increase pwm frequency by changing resolution?
Here's code for timer 1 on a atmega32u tested in a Teensy 2.0:
void setup() {
// put your setup code here, to run once:
// Timer 1 Fast PWM mode *toggling* OC1A at 50kHz with *two* OCR1A counts … The popular examples aim for a specific frequency with toggling, but often don't go into showing the PWM with the non-TOP OCRxx registers. …
- 2,340
1
vote
RF24 + High speed pwd
The prescaler would be the same, and the timer controlled pins would be D11 and D3:
//// pwm settings for 100kHz on Timer 2
//// Toggle OC2A/D11/PB3 at 50kHz, PWM OC2B/D3/PD3 at 100kHz:
DDRB |= … PWM
TCCR2A = bit(WGM21) | bit(WGM20)
| bit(COM2B1) // PWM on OC2B
| bit(COM2A0); // Toggle OC2A
TCCR2B = bit(WGM22) | bit(CS20); // Set /1 prescaler
OCR2A …
- 2,340
2
votes
Accepted
Is there any realy working setup for multicopter with codes
I've not used the (unmaintained) code you reference, but if a PID is responding much too fast in a new system, cut the parameters down significantly, first focusing on P and later I. Turn off the D, …
- 2,340
1
vote
PID control for Motor Speed control
Instead of thinking of the PID output as pid_speed, think of it as motor_power, and what the PI controller is doing is translating errors in rpm into a motor power setting.
You are probably getting …
- 2,340
0
votes
How can I convert PID correction values to an PWM brushless command?
You convert PID outputs to process outputs by selecting appropriate Kp, Ki, and Kd constants -- they translate the error components into a process output. For example, if you want 10 degrees of erro …
- 2,340
7
votes
How to output a true analog voltage at output pin
And if you put the a capacitor between your resistor and ground, the RC circuit of the capacitor will smooth out the PWM into an analog voltage. …
- 2,340