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An Isolated Analog Input for Arduino

Project tutorial by Giovanni Carrera

  • 3,083 views
  • 10 comments
  • 3 respects

A very simple way to power Arduino

by Giovanni Carrera

  • 18,914 views
  • 3 comments
  • 7 respects

How to modify analog output range of Arduino Due

Project tutorial by Giovanni Carrera

  • 10,093 views
  • 19 comments
  • 13 respects


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Robot for supercool indoor navigation

Project tutorial by Team oblu

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  • 9 comments
  • 34 respects

Mini Telegraph

Project showcase by Yegor_A

  • 8,306 views
  • 9 comments
  • 52 respects

Alzheimer's Assistant

Project tutorial by Abdullah Sadiq

  • 11,809 views
  • 5 comments
  • 60 respects

  • How to modify analog output range of Arduino Due about 1 month ago

    Hi Dave,
    I designed this system to replace an analog PID, also designed by me. But then I never made the digital PID with Arduino Due, because the analog PID works very well and maybe it's more reliable.
    Before the analog PID I had done a PID with Labview on PC, but I could not use sampling periods of less than 3 milliseconds, because of Windows that does not allow real time.
    What I can tell you, on a theoretical basis, is that the sampling rate must be higher than the the bandwidth of the system to be controlled. I think there are no problems working with Arduino Due at 5-10 kHz, but I've never tried to do it.
    Greetings

  • How to modify analog output range of Arduino Due about 2 months ago

    Hello Dave,
    I apologize because I had not noticed this inconvenience and you are the first to notice this. Now I set the figure, on my blog, in the original size and you can read it well. Happy New Year wishes to you too

  • How to modify analog output range of Arduino Due 3 months ago

    Instead of a preamplifier with discrete components, you can use an instrumentation amplifier, more expensive, but simple to use. For example an INA125, AMP04, AD8221 etc.
    As for the offset, I've already given you an answer. With a single supply, an operational amplifier has saturation problems close to zero, so you must use a negative power supply or specific op amps.

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