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3 votes

Arduino Uno - Analog Circuit Simulator

Here is the one which is closest to be useful for your question Link: https://markmegarry.github.io/AVR8js-Falstad/ Try it out for yourself It is very slow though.
ArduinoFan's user avatar
  • 1,059
2 votes
Accepted

Controlling op amps amplification ratio by arduino

The basic principle is easy to implement. A non-inverting configuration has a resistor Ri from the inverting input to ground, and a feedback resistor Rf from the same input to the output. The signal ...
Boggyman's user avatar
  • 609
2 votes
Accepted

Stable amplitude of amplified signal

Just a word of advice about AGC in general. There is almost always an issue of attack (how fast the AGC reacts to a sudden increase in signal) and release (how fast it reacts to a decrease). In most ...
Boggyman's user avatar
  • 609
2 votes
Accepted

Amplify Piezo Sensor

You write, The blog post mentions a 0.1uf capacitor in the hand-drawn sketch but the Fritzing diagram shows a 10uf capacitor. I am using the 10uf capacitor. The Fritzing diagram in the high-...
James Waldby - jwpat7's user avatar
1 vote

How to offset PWM output so it would also have negative amplitude?

Consider removing the average of the PWM voltage by subtracting the Direct Current (DC) component of the PWM output. Often, between different audio amplifiers stages, the DC component of the signal is ...
st2000's user avatar
  • 7,340
1 vote
Accepted

Noise in Analog Read Serial from an instrumentation amplifier(ina122p)

"noisy most of the time" - good news: if it's not all the time, that's a sign it can be fixed. "bandpass filter is also not really helping" - INA122P circuit likely has something ...
Abel's user avatar
  • 265
1 vote

I am facing a problem of firing multiple interrupts on nodemcu 1.0 on single rising edge pulse.what is problem and what are the solutions?

The signal is probably "bouncing" between HIGH and LOW instead of performing a clean edge, just like it happens with buttons. Two simple solutions: Hardware solution: use a schmidt-trigger instead ...
Sim Son's user avatar
  • 1,869
1 vote

HX711 - Inconsistent Readings

Here is is a picture of how I have seen the sensors connected. Is this how your is?
Jeff A's user avatar
  • 76
1 vote

Arduino Nano Midi to cv convertor interesting issue

I changed the opamp to LM358 and all problems solved it works perfectly! If you have enough motivation and time please explain me why, but i will research and learn anyway.
Ali Somay's user avatar
  • 121
1 vote

Oscillating Analog Readings

Without seeing circuit and construction details and oscilloscope traces, it's difficult or impossible to say what the problem is. It may be due to op amp instability due to a large capacitive load. ...
James Waldby - jwpat7's user avatar

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