Tagged Questions

2
votes
1answer
76 views

Reversing a .5-4.5V analog sensor output to 5V-0V

I have a pulse width modulation (PWM) control board that uses a 0-5V input via a potentiometer to control a DC motor speed. As I understand how this works, the potentiometer goes from 0% PWM at 0V to ...
8
votes
5answers
3k views

how determine the RC time constant in PWM digital to analog low-pass filter?

I 'm looking for the best RC time constant and its reason in a PWM to convert digital signal to analog based on duty-cycle and frequency and other parameters. PWM frequency is 10 kHz.
2
votes
2answers
417 views

Controlling analog volt-meter display

I know that it is possible to generate higher voltage from lower voltage source, I just don't know how ... Anyway, few days ago I got this: ...
3
votes
2answers
2k views

Algorithm for mixing 2 axis analog input to control a differential motor drive

I am looking for information about how to implement proper mixing of 2 analog joystick signals (X an Y axis) to control a dual differential motor drive ("tank like" drive) using a uC (ATMega328p in my ...
2
votes
4answers
2k views

Converting PWM into an analog signal

I'm trying to think of the best way to convert a PWM signal into an analog signal. I could use an RC filter, but that requires a very high PWM frequency to create a faithful reproduction of the ...