Designed simple test board for generic *24C256 (BL24C256) EEPROM attached to CH32V003J4M6. To be used alongside LinkE programmer for testing.
Designed 02005-004 PCB which is seemingly just a SOP8 breakout board, but also with a CH32V003J4M6, you can dedicated 2 pins to power/ground, 2 to input signals A and B, 2 to a mode setting 00/01/10/11, and then get different output signals on the 2 remaining pins: NOT A, NOT B, A OR B, A NOR B, A AND B, A NAND B, A XOR B, A XNOR B. 
Designed battery-powered continuity checker board (02005-003). 
Designed manually read/writable SOIC-8 EEPROM test board (02005-002). 
Designed diode ROM 7-segment output board. Did not order at this time due to prohibitive cost (8/3). 
