Zero crossing detector for Arduino using 4N35 optocoupler
Nov 8, 2020 · I am designing a zero crossing detector for Arduino using the 4N35 optocoupler. This is just a small part of a large project. I haven't bought the...
Arduino and zero crossing — Non-uniform spikes in interrupt signal
Dec 25, 2020 · The discussion focuses on an Arduino circuit designed for zero crossing detection, where the user initially observed non-uniform spikes in the interrupt signal. The spikes …
Interrupts in Arduino not working (for detecting zero crossing)
Dec 20, 2020 · The discussion centers on troubleshooting an Arduino setup for detecting zero crossings using an H11AA1 optocoupler and interrupts. The user initially faced issues with the …
Arduino: Unwanted delay & "0" after Serial.parseInt
Dec 21, 2023 · This Arduino sketch is supposed to wait for a number and then print it back with a message. But for some reason its gets an extra "0" from the TTY each time I actually type a …
Programming an ATmega8A using Arduino - Physics Forums
Aug 13, 2022 · Tutorial on how to program an ATmega8A microcontroller using Arduino. I will assume that you have some basic experience in Arduino.
Difference between Analog and Digital Pins on my Arduino Board
Oct 28, 2017 · I wanted to ask what the difference between analog and digital pins is on my Arduino (or any other board). I have been using both but don't really know what the difference …
How to control a stepper motor in closed loop (PID) in arduino?
Feb 27, 2023 · Hello, What I have I have a NEMA17 stepper motor driven by a DRV8825 driver module, an arduino uno, a multiturn potentiometer. What I want to do I want to control the …
Building a Raman spectrometer… • Physics Forums
Sep 19, 2025 · Arduino technology has advanced to a point where it could potentially serve as a more practical alternative for on-the-spot drug purity testing compared to previous Raspberry …
How to Measure Internal Resistance of a Battery - Physics Forums
Feb 14, 2023 · A commonly encountered school-level Physics practical is the determination of the internal resistance of a battery - typically an AA or D cell. Typically this is based around a …
Designing a DC Motor Torsional Spring Circuit with Arduino Uno
May 27, 2020 · I'm a relatively new entry into the world of electronics so my understanding of what is possible may not be an accurate one. In a nutshell, I would like to have a DC motor act as a …