100 LED Oscilloscope

[@mitsuruyamada]

It remind me when I was a boy, I would frantically adjust the horizontal axis speed of a simple oscilloscope to watch the waveform. I am impressed that the scanning is achieved with a very simple circuit! Nowadays, everything is so highly functional that thinking about principles seems to be neglected, but I like you, believe that simple principles are important.

[@AJB2K3]

Way cool, this looks like it should be one of those beginners in electronics kits.

[@NEWTechCreative]

Great projects!! I appreciate the simplicity and nostalgic design. Thanks for sharing. 👍

[@lonesoulsurfer]

Cheers mate! Thanks for checking it out

[@JeremyCook]

Love those square LEDs! PCB looks nice in black. Bet that would make a cool piece of guitar equipment.

[@lonesoulsurfer]

Pretty stocked when I found the LED's available. They come in a few different colours as well.

[@joaoclaro311]

Hi, those led's are cool and look like edible strawberry gummies ❤ Love the project !

[@lonesoulsurfer]

hahaha. they do look pretty delish!

[@IrregularShed]

Love this. It reminds me of the machines that would take your pulse at the leisure centre when I was a kid in the early 80s - the same aesthetic completely 😁 being a pedant, though, the LED trace is going right-to-left, not left-to-right (SORRY! I'M THAT GUY!)

[@lonesoulsurfer]

would be pretty cool to be able to measure your pulse with this!

[@lasersbee]

Excellent project for the budding Electronics Technician using discreet parts instead of a Micro Controller. You could have installed a 10 turn Horizontal pot to get better resolution.

[@lonesoulsurfer]

cheers. with a 100 pixel screen - the resolution prob wouldn't get much better

[@lasersbee]

@@lonesoulsurfer You misunderstood... I meant better Pot Setting resolution.

[@lonesoulsurfer]

@@lasersbee oh right. We’ll if you mean a 10k pot instead then I think that may be too small. A 50k is 10% of the 500k one used so it’s a nice value to use to try and find the sweet spot

[@tonyd1149]

Nice work, sir. I love it. God[Bible] Bless you.

[@organicelectrics]

Nice project using classic ICs! You don't see this one in the old project books for 4017 and 3914. I am curious about your power supply, I don't see any regulators in the schematic. How do you prevent supply variations disrupting the 386 accuracy and 555 frequency?

[@organicelectrics]

Just checked the instructable. Power supply variations probably aren't that big a deal. Thank you for sharing this build!

[@lonesoulsurfer]

John is right - not too many power spikes. There us a 470uf cap to help smooth things out

[@oldahofmann]

What is it good for? Where can you set the trigger?

[@lonesoulsurfer]

Absolutely nothin’ say it again noooowww