Hi everyone, I have a dilemma, I have a project with a rotating wheel with 3 hall effect sensors positioned 120 degrees apart (duinotech XC-443) with a magnet positioned on the wheel. I have a mega 2560 board to process the inputs to send an output signal to a relay block ( Songle SRD-12VDC-SL-C ) …

[image] pjg7061: I have made a detailed wiring diagram with components and have a sketch I can provide. Please do so. Also, please provide a good description of what the application is supposed to do. With that, people might be able to help. You can drag an image file into a reply window to…

Also can you tell us what sort of speed these magnets are rotating at. If it is too fast it is likely that the relays will not be able to respond fast enough.

You will need to read the Hall effect sensors. Then Determine the position of the wheel based on which sensor is activated. Use the wheel position to decide which solenoid to trigger. Send output signals to the relay to control the solenoids.

Do you need to change the program, or just replicate it? If the Mega2560 with the program is working, you can't get the source code from it, but it is possible to make copies of the executable code to program other Mega2560s. Otherwise, if you need to make changes, then the best approach is indeed…

Thank you for your response. This was working ok, but I think it could be improved i.e. pin 21 may not be in the right input. It would be doing maybe 100rpm and its simple water feature. This was our attempt a writing the code. Kind regards Pat // Identifying internal components and declaring as…

HI, @pjg7061 [image] How to get the best out of this forum IDE 1.x See also FAQ - Arduino Forum for general rules on forum behavior and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the…

You are putting 12V on a 5V relay module. You should have kickback suppression diodes across the valve coils.

Hi, @pjg7061 Check you relay assembly, for the relay operating voltage. As @JCA34F has pointed out you have 12V to the assembly yet the assembly in your image has 5V coil voltage written on it. What is the part number of the hall effect module? Tom.. :smiley: :+1: :coffee: :australia:

// Identifying internal components and declaring as variables ////////////////////////////////////////////////////////////// // Identify Input/Output Pins const int firstHall=2; // select the input pin (sensor input) const int firstCoil=5;// select pin for relay (relay output) const int secondHall…

Hall effect sensors with a mega 2560 and a relay module to power solenoids

Projects Programming

TomGeorge November 14, 2024, 2:45am 7

HI, @pjg7061

This link will tell you how to post code in a scrolling window.

Can you please post a copy of your circuit, a picture of a hand drawn circuit in jpg, png?
Hand drawn and photographed is perfectly acceptable.
Please include ALL hardware, power supplies, component names and pin labels.

Tom...

Topic		Replies	Views
Hall sensor - do I get something wrong? Science and Measurement	24	1503	December 12, 2023
Kreis mit 2 Weichen mit L298N Deutsch	125	2048	August 20, 2026
Suche Hilfe für Arduino Nano Sketch (Leuchtturm mit HAll-Sensor und MOSFET Deutsch	36	470	July 26, 2026
Demultiplexing Hall Effect Sensors General Guidance	31	848	March 26, 2025
Running 24 volts motor through arduino Programming	23	1938	November 24, 2020

Hall effect sensors with a mega 2560 and a relay module to power solenoids

Related topics