That's the Inchworm, it's for serial ports and is somewhat fussy about USB to Serial adapters. If you want USB then look at the Junebug instead, it actually uses less parts than the Inchworm if you only need the programmer half (top schematic in the manual)
That's the Inchworm, it's for serial ports and is somewhat fussy about USB to Serial adapters. If you want USB then look at the Junebug instead, it actually uses less parts than the Inchworm if you only need the programmer half (top schematic in the manual)