Projects Log

projects, diy


Archive for 'led' Category

640 Leds display [Project update]

8 July 2007

Finally i had enough free time to work on the PCB layer, here's the first version (unverified for now)

click to view the whole layout
Since I can't etch something >300mm, I have to split each board in two parts.
So we have the logic boards (74×4094, and uln2803) on the top, and the "matrices" boards (with the [...]

[New project] 640 leds display (work in progress)

30 December 2006

Once again i've been very busy lately…
Here's a preview of my new project… meet the 640-led-display(-to-be)!

Ok for now only 2 matrices (=128 leds), but there are way to much wire on that breadboard… even with only two of them!

Project Pictures

Project parts (estimated):
a lot of resistors (about 85)
some capacitors
10x 74HCT4094 (shift register, with latch, and serial [...]

Project One: a clock with 7 segment displays and an Atmel Atmega8 µC

18 September 2006

This is my first project with Atmel's microcontrolers…
it's an idea i had to learn how to use digital I/Os, internal timer, interrupts,…
The hardware/software may not be very optimised, but the clock is quite accurate! :p