These are all ideas for making open source circuit boards and/or products:
- Use AAA batteries instead of coin cells for chibitronics kits.
- IR receiver to USB adapter which looks like keyboard to PC and works with universal remotes. Main target first is to use my Panasonic TV remote in the Cable Box mode to control MythTV.
- Logic analyzer which is similar to the DreamSource Lab DSLogic Pro but which is actually open source and documented and able to be purchased.
- SPI flash programmer using USB high speed, as read and verify steps would be much faster, leading to faster cycle time.
- USB to serial adapter which supports 5, 3.3, and 1.8 V logic levels and the normal FTDI 6 pin interface as found on BBB.
- GigE Ethernet switch
- Power over Ethernet addon for above switch
- Tuxedoboard
- WWVB USB receiver with PPS output and LCD/OLED screen
The Atmel/Microchip SAMA5D2x parts are quite inexpensive and very capable! The 196 pin BGA package is 0.75 mm ball pitch, which with Macrofab's standard manufacturing capabilities, should allow for the outer 4 rings of balls to be broken out in a 4 layer board (albeit with non-ideal reference for some of them as the reference will be a power plane and/or the power/ground planes will split on layers 2/4 which isn't a good idea).