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Results tagged with pwm
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user 6959
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 ~).
7
votes
Accepted
Can I connect a PWM pin on one Arduino to an analog input on another?
This works because the PWM period is about 1 mS so delaying for a period of multiple cycles but not an exact multiple means you sample semi randomly. … You could instead use PWM out (analogWrite) and a digitalRead. …
- 2,421
4
votes
Increase PWM bit resolution
With some calibration you could sum the outputs of two PWM channels with differing weighting resistors. … much better chance of achieving extra PWM resolution. …
- 2,421
1
vote
Issue with PWM output pin
You appear to have connected to pin 9 (as you intended to)
Pin 9 has PWM capability, as required.
It seems that your code should work. … Try another pin with PWM capability to see if it changes.
ARDUINO UNO R3 from UNO home page
The connector pinouts vary widely between models of UNO. …
- 2,421
1
vote
Supplying near perfect DC signals from Arduino UNO
You can even do ALL signal setting this way if required with NO PWM (or you are effectively implementing adaptive PWM without formally doing so). …
- 2,421
4
votes
Accepted
Why does a Piezo Buzzer not require a PWM digital pin (Gallileo Gen2)?
Why does a Piezo Buzzer not require a PWM digital pin?
Tone() uses the microcontroller's hardware timers to control the related code function but do not use the hardware PWM features. … Filtering the PWM produces DC at the average DC level. PWM range is 0 to 255 (8 bits) …
- 2,421
2
votes
Accepted
MOSFET to dim LED backlight
Summary:
It looks as though you can just drive BL directly with the PWM-output.
What happens when you do? … To use the BS170,
connect the source to ground,
connect drain via a say 1k resistor to +3.3V,
connect drain to BL,
drive gate with PWM.
BUT why does not just driving BL with PWM do what you want? …
- 2,421