A straight-forward method for debugging a non-working circuit

"Hey... The resistor isn't connected to the battery!!" This was me, after many frustrating hours of trying to figure out what was wrong with a circuit I'd built. It was such a stupid mistake. And I was of course blaming everything from the manufacturer of the resistors to disturbance from the WiFi signal. But it turned out that I hadn't connected the resistor properly. ​ Here's how I find my own errors: Print (or draw) your schematic diagram on a piece of paper Jump between looking at the schematic diagram, and looking at your circuit Go through all the pins of all the components in the schematics, one by one. Say out loud what each pin should be connected to. Ex "Pin 3 of the 555 timer should be connected to the positive pin of capacitor C1" Check if you have made that connection in your circuit. If you have, mark it off as checked in the schematics. Do this until all the connections are checked. ​ If you're missing a connection (which has been the source of many non-working circuits for me), then this method will help you find it. ​ Keep On Soldering! Oyvind @ build-electronic-circuits.com PS! If you're new to electronics - or trying to get back into it - here are two ways I can help you learn electronics: ​Getting Started With Electronics is the first eBook I wrote to help people get started. It's a step-by-step guide with simple instructions to get started building electronics. Perfect for complete beginners. ​ ​​Join Ohmify​: Ohmify is for people interested in electronics who want to learn skills like PCB design, soldering, and project-building - while also getting a proper understanding of the basics.

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