ArduAmmeter

Project tutorial by Giovanni Carrera

  • 3,573 views
  • 2 comments
  • 10 respects

How to Make a Supersize Thermometer with an RGB LED Strip

Project tutorial by Giovanni Carrera

  • 3,428 views
  • 1 comment
  • 12 respects

Only Three Pins for a 4x3 Keypad

Project tutorial by Giovanni Carrera

  • 7,240 views
  • 4 comments
  • 17 respects


Mobile Remote Surveillance Camera

Project tutorial by danionescu

  • 11,121 views
  • 8 comments
  • 39 respects

Robot for supercool indoor navigation

Project tutorial by Team oblu

  • 26,353 views
  • 10 comments
  • 67 respects

Mini Telegraph

Project showcase by Yegor_A

  • 18,657 views
  • 13 comments
  • 107 respects

  • ArduAmmeter about 1 year ago

    1) the Arduino AREF pin is an input only in the "EXTERNAL" case, otherwise it is an output of the internal Vref.
    2) The voltage follower serves to not alter the value of the R4 resistor as it has an output with negligible resistance.

  • Smart Buoy - [Summary] over 1 year ago

    For several years I measured the waves of the sea and also the motions of the ship using professional buoys to measure the height of the waves and the prevailing direction of the sea. I also know the sensors used on buoys and electronic circuits and radio communication systems and satellite positioning systems.
    If you need help I am happy to cooperate.

  • DIY Voltmeter Using Arduino and Smartphone over 1 year ago

    interesting project, especially with regards to software. As for the hardware part, I suggest you use the internal Vref, which is fairly stable and is about 1.1V with the following instruction in the setup ():
    analogReference (INTERNAL);
    If you want a range of 50 volts, you must use a divider with R1 = 1Mohm and R2 = 22kohm, metal film resistors with a tolerance of +/- 1%. (or 100k and 2.2k)
    It would also be advisable to measure the Vref with a good digital voltmeter, after loading the program and configuring the Arduino ADC. Then enter the true value of Vref in the program as it can vary between 1 and 1.2V. Best regards

Add projectSign up / Login