DSPPIC PIC24FP64 board wide.hk
A rather more compact format is called for; such as an Arduino, but based on a PIC24 or dsPIC. I located such a thing on Ebay from a company based in Hong Kong. The specification was perfect: takes a 28-pin DIP package dsPIC, with on-board regulators, on-board UART to USB bridge chip and the programming header for a Microchip PICkit debug/programmer. A close inspection revealed that the header for the PICkit was the wrong way round, the DC power socket was actually positive pin not as shown on the schematic and the power switch was inoperative. After all this was sorted out it worked perfectly. Well it was cheap and I just have to remember to plug the PICkit in upside down when a new version of the firmware needs to be programmed!