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Help!! My DIY Electronics Project Doesn’t Work! Op-Amp Circuit Troubleshooting Diagnosis Repair

This video is kindly sponsored by PCBway. Please give PCBWay a try for all your PCB needs. https://www.youtube.com/c/PCBWay Did you ever build an electronics project that didn’t work? Yeah of course you did. Me too!! So what to do when this happens?

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https://www.pcbway.com/setinvite.aspx?inviteid=561767

I built this MilliOhm meter DIY project and it is not working! Let’s see if we can work out what the problem is.

CHAPTERS
00:00:00 Introduction
00:01:18 PCBWay Shared Projects
00:02:46 The Millivolt Meter Project
00:06:52 Selecting The Components
00:20:11 Building The MilliOhm Meter
00:46:00 Testing The MilliOhm Meter
00:47:07 Adjusting The Settings
00:50:17 It Doesn’t Work!
00:58:44 Diagnosing The Problem
01:06:22 Enlightenment!
01:09:34 Improving The Accuracy
01:14:21 Epilogue

Used in This Project (links are affiliated, I get a small commission from all sales but you pay the normal price)

SMD Tweezer / DIY Kelvin Probe
https://www.aliexpress.com/item/32855006371.html?af=ler2002&cn=001&cv=yt1
OP07 Op Amp
https://www.aliexpress.com/item/1005001896512155.html?af=ler2002&cn=001&cv=yt1
IRF540 Mosfet
https://www.aliexpress.com/item/32790786150.html?af=ler2002&cn=001&cv=yt1
1W Zener Diode Pack
https://www.aliexpress.com/item/1005002330654228.html?af=ler2002&cn=001&cv=yt1
Trimmer Potentiometer Pack
https://www.aliexpress.com/item/32912524072.html?af=ler2002&cn=001&cv=yt1
5 Digit Volt Meter
https://www.aliexpress.com/item/1005002957467146.html?af=ler2002&cn=001&cv=yt1

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Thank you for your support.
Richard

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