emmanuel63
Well-known member
Hello,
I have been playing with Teensy for a while now, and I need some help to build less noisy circuits.
I mainly build musical instruments and MIDI controllers with a lot of pots, switches, sensors, multiplexers... I noticed that the more complex my circuits are, the more noise I get especially when reading pots and sensors. I need some guidelines to build "quite" circuits. Here are a few questions:
- what are the best practices to filter and stabilise the power supply ? I noticed this is often the main source of noise.
- best practices to reduce pots noise ? Why adding more pots lead to more overall noise ?
- how to design PCBs ? Do I have to make ground planes ?
- how to avoid ground loops ?
- I am not sure to understand the benefit of using analog GND. How to use tis feature with pots for instance ?
This is a lot of questions... I don't ask for ready to use solutions, but if one can give me links to documents and threads I could study, that would be nice.
Emmanuel
I have been playing with Teensy for a while now, and I need some help to build less noisy circuits.
I mainly build musical instruments and MIDI controllers with a lot of pots, switches, sensors, multiplexers... I noticed that the more complex my circuits are, the more noise I get especially when reading pots and sensors. I need some guidelines to build "quite" circuits. Here are a few questions:
- what are the best practices to filter and stabilise the power supply ? I noticed this is often the main source of noise.
- best practices to reduce pots noise ? Why adding more pots lead to more overall noise ?
- how to design PCBs ? Do I have to make ground planes ?
- how to avoid ground loops ?
- I am not sure to understand the benefit of using analog GND. How to use tis feature with pots for instance ?
This is a lot of questions... I don't ask for ready to use solutions, but if one can give me links to documents and threads I could study, that would be nice.
Emmanuel