Reddit:Electronics

This is my highschool electronics project, made this at around 15 years old it uses Binary adders, counters and cimparators and has alarm and time adjustment

On the photos you can see the display module I made hooked up to my Arduino. I’m working on the boost and MCU board now, this is also my fist PCB design and I’m so proud of it!

More infos, pictures and gerber here

Details: The wire is NOT a 3rd party product, it is the wire that came from the box. It’s a Surface laptop charging wire. When I plugged the wire into the socket, I saw a bright white flash, all the lights went off in the classroom instantly, and there was a loud cracking sound. No smoke whatsoever. I plugged into the socket *ABOVE * the blackened one. My pinky finger got nicked a bit from the heat, but i didn’t get electrocuted (thank god) as i wasn’t touching the socket itself. (Don’t worry it’s fine now.)

The plug is now taken to test, but I do want to know what might have happened. I remember the wire broke off. Could it be a short circuit, overloading or something else? Thank you.

Dm me and i will let you the .zip file

...My stuff!

Primarily second hand, ham-swap things and bobs, apart from the soldering iron and the power supply up above the bench. All things restored and repaired myself since I was a scrawny 15 years old with a soldering iron and lots of patience.

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Bench surface (way tidyer than usual)

Partial workshop area (sorry for the bad lightning)

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It's a little different now but still relevant.

The little 3D printed component storage drawers are awesome for resistors and capacitors and stuff. I have a hot plate and air gun and microscope not pictured for when I do SMD work but thats not super often right now

Bonus 3d printer behind me.

My first ever breadboard kit arrived today and this is my first circuit. I'm a full grown adult but still jumped and smiled like a kid when it actually turned on!

It looks a bit like a pipe bomb But there is a purple trigger board taking 12V from the power bank, and a step-down converter turning it into 7V for the camera. I also had to add a capacitor because while opening the cassette bay, the camera was turning off. It looks really bad, but I'm out of home, next week I will 3d print a case for all the electronics.