Show what can you do with only one AVR :lol:

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Having headache projects? so let's have fun a little ^^.
What can you do in a project with only one AVR chip? please show off it :lol:
And this is mine, a old full color LED project:
Components used: ATmega8, 74HC595x72, 1584 5mm LED, diodes, resistors, some 7805, SD cardx1, 74HC245x1.
Cost: <$130
Program size: <4KB
Link: https://www.youtube.com/watch?v=...
Idea: the young me thought he could do the cheapest full color LED panel in the world :lol: that can compete to China's. Only use a ATmega8, many 74595 to expand output which connect to LEDs that drive by 12V (3 LED for green or blue, 5 for RED that make 11, multiply by 144 notes drive by 72 74HC595). The program is simple: put out datas found in a SD card to 74HC595 and make each pin of it a PWM. The project is a success and a failure too, too much noise make LEDs blinks crazy and cost weeks to fix (isolation SCK and SS, divide to 4 group, use large wires connect to GND each group...). The hardest part is the program to extract data to file from animation, I write it by MS .NET. The panel is death now by water leakage and I had lesson: cheap at first but it'll cost more later :P [/u]

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Impressive stuff!

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Wow, nice project!

Just wiring all of the LEDs, and the power supply, would be big projects, in addition to the software.

JC

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This should be in the sticky of projects. Well done!

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