(EDIT) Video of the project added in post #12 Just finished is this NJK-5002C Hall Effect tachometer. Details coming shortly. It works like a charm. Just tape a magnet to a rotating object, press the button on the side of the tach and it displays the rpm. As happens sometimes when working too late…

[image] lloyd-ss: avrdude: ser_open() I am not sure what I did but the problem is fixed. Upload was successful and changing the calibration number in the sketch worked also. I just fiddled in TOOLS with, board, processor, and com. All is well.

Hand held Hall Effect Tachometer -It Works!

Projects Showcase

xfpd January 1, 2025, 12:32am 7

Yes, the IDE forgets the last connection a lot.

1 Like

Topic		Replies	Views
Nano, Dual Tachometers? Programming	9	418	April 25, 2023
Need simple code for arduino tachometer stepper Jobs and Paid Consultancy	4	646	September 12, 2021
Hall Sensor for Tachometer with Arduino issue Science and Measurement	9	230	February 4, 2025
Tachometer+Load cell + SD card + LCD ?? General Guidance	32	2922	May 5, 2021
Tach-Ammeter project General Guidance	3	1612	May 5, 2021

Hand held Hall Effect Tachometer -It Works!

Related topics