Tell us about yourself!
Design Sketching Class
Make a Self-balancing Robot with Arduino UNO
Tools and Materials for Laser Cutting
Welcome to Laser Cutting
Laser Cutting Class
LEDs and Lighting Class
3D Printing Class
Hi blic19933,Thank you for your answer. I was afraid to blow the board. I looked around on the web and found this: http://www.bytecreation.com/blog/2013/10/13/raspbe...Look at Adam's comment arround the end of the page(search for "Hydraulic Analogy"). He explained a bit about current and voltage and made some test. It seems that, even thought it would be recomended to use a voltage divider, it is safe to use just a resistor as you did.
Hi, that's a nice robot. I made one. I have a question about the hc-sr04 sonar sensor wiring. You wrote "As per the MICRO Magician instructions we need to put a 10k ohm current limiting resistor on the 'echo' wire to protect the input.". But it's a voltage divider with a 10k and 15k resistor that is needed. Does it work without frying the board with only the 10k resistor for you ?Thank you.