- Sun May 07, 2017 1:08 pm
#194724
So recently it has become pretty popular to use an arduino to control a digital clock generator, or two, to create a direct digital synthesis controlled radio.
I've been working on one of these of my own design, and am torn between making it *very* general purpose, or tailoring it specifically to my needs.
In the general column, it would be nice to have onboard supply regulation, onboard USB, full I/O available, R3 shield compatibility, etc.
In the specific column, I don't need onboard regulators, or full I/O, could get by with ICSP header, could lay out I/O on any pin header layout, etc.
The whole project is played out around the ATMega 64/128/1281/2561 family, in the 14mmx14mm tqfp package. I have about thirty ATMega128's, and just ordered a pair of 2561's from Sparkfun. I will be using the Optiboot/Megacore combination to make the board Arduino compatible.
The big issues I am running into are component packaging and laying out the board to take advantage of the large amounts of I/O available. When I get back to the house I'll get some board images to better explain what I mean.
If anyone has any tips or advice on getting all the IO pins snaked out away from these TQFPs, I would be all ears!
I've been working on one of these of my own design, and am torn between making it *very* general purpose, or tailoring it specifically to my needs.
In the general column, it would be nice to have onboard supply regulation, onboard USB, full I/O available, R3 shield compatibility, etc.
In the specific column, I don't need onboard regulators, or full I/O, could get by with ICSP header, could lay out I/O on any pin header layout, etc.
The whole project is played out around the ATMega 64/128/1281/2561 family, in the 14mmx14mm tqfp package. I have about thirty ATMega128's, and just ordered a pair of 2561's from Sparkfun. I will be using the Optiboot/Megacore combination to make the board Arduino compatible.
The big issues I am running into are component packaging and laying out the board to take advantage of the large amounts of I/O available. When I get back to the house I'll get some board images to better explain what I mean.
If anyone has any tips or advice on getting all the IO pins snaked out away from these TQFPs, I would be all ears!