pwm to DC for Arduino

357

05:44:29

Arduino AnalogWrite (pwm) to DC convertor.
pwm 10% gives 0,5 V DC and pwm 90% gives 4,5 V dc
Change the dutycycle and see the effect
pwm frequency = 500 Hz
The Vcc of the opamp must be at least 8 volt to use the full range from 0 to 5 volt.
Use the Vin on the Arduino board to power the opamp. Vdd = 0 volt.

published 11 years ago

bobdobbs

11 years ago

Just so happens I just got my arduino in the mail today. Now I just gotta figure out what to do with it.

kaivanveldhoven

11 years ago

Goed gedaan Wim! Erg mooi

hurz

11 years ago

With -60dB suppression at 500Hz pwm default freqency, this lowpassfilter is good for 10bit resolition which fits perfectly to arduino default configuration, i think. Anyway, because of the low cutoff frequency ~13Hz its also very slow, but for many application still fast enough. Keep it up!

oldbeaver

11 years ago

The closest to what I need so far.

Ms_G

7 years ago

Perfect. I've been doing research for two days to make a circuit like this, but couldn't figure out how to put them together. You are today's hero to me.

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