I'm looking to build a display timer, 7 segment discreet LED's (DigiKey 160-1678-ND). Each segment will consist of 5 LEDs for a digit size of 2 1/2"x5".
There will be 5 digits (hour, minutes, seconds). Not only will the timer need to count up from zero, but I'd also need it to have the option of starting at a preset time and count down to zero.
Power supply - 12 AH -12V rechargable battery(if possible)
HISTORY: I built a basic timer 0-> up countdown timer with 8" digits, with the help of an electronics friend (I know enough to be dangerous, I soldered in 300 LED's without frying a single one!) and scabbing different components together. Works great but now I want to take the next step of more features and not using parts out of other devices.
If some sort of PIC is needed, I'm willing to learn and do that, but as of now, I'm starting from ground zero.
I have the LED's, I have the circuit board material in my CNC and am drilling the holes for the LEDs and am in the process of building the case for the unit but I do need help with the schematics, and programing, if necessary.
Between my machine shop, family of 5,this clock, Rotary, running club, building a bicycle from tube and a host of other adventures, so many projects so little time, but I love to learn and try new things :-/
Any guidance would be appreciated , thanks!
(existing schematics, kits, reference books, or from scratch...it's all good
There will be 5 digits (hour, minutes, seconds). Not only will the timer need to count up from zero, but I'd also need it to have the option of starting at a preset time and count down to zero.
Power supply - 12 AH -12V rechargable battery(if possible)
HISTORY: I built a basic timer 0-> up countdown timer with 8" digits, with the help of an electronics friend (I know enough to be dangerous, I soldered in 300 LED's without frying a single one!) and scabbing different components together. Works great but now I want to take the next step of more features and not using parts out of other devices.
If some sort of PIC is needed, I'm willing to learn and do that, but as of now, I'm starting from ground zero.
I have the LED's, I have the circuit board material in my CNC and am drilling the holes for the LEDs and am in the process of building the case for the unit but I do need help with the schematics, and programing, if necessary.
Between my machine shop, family of 5,this clock, Rotary, running club, building a bicycle from tube and a host of other adventures, so many projects so little time, but I love to learn and try new things :-/
Any guidance would be appreciated , thanks!
(existing schematics, kits, reference books, or from scratch...it's all good