I’ve had a few inquries about a '1284 in small form factor, so I put a TQFP part on a small board with the components needed to run standalone and added independent headers for ICSP and FTDI for bootloading & sketch downloading. Even put a couple of LEDs on since the headers sort of forced the overall size. Added a bunch of ground connections too.
I’ll put an order in for boards in a few days.
Parts are standard - 16 MHz xtal, 0805 size caps & resistors, 0.1" pitch headers, 1206 LEDs, and a DO214BA size diode for non-lockup sketch downloads.
Offboard 4.5-5V power needed. 3V for 8 MHz.
Pinout is the Mighty1284/Bobuino variant.
Add your favorite '324/644/1284 into your project and take advantage of 32 IO lines.
Pick up a metal stencil for $11
and away you go for easy assembly!
Board is 48.25 x 44.5mm, 1.9" x 1.75", I’ll be ordering in lots of 10.
1-piece shipped to you for $3.00, price will drop with higher quanties as I can mail several for the same postage cost.
Will pester all requestors for paypal funds after I get the boards in ~July 20 if ordered this weekend.
I’m open to suggestions for improvements too. If the board is allowed to grow to 50mm x 50mm, a few more components could be added.