Sliver - XX
is a compact and versatile PIC development PCB, economized for size and portability. Supporting the 16F 20PIN range of devices, the PCB delivers an efficient and effective development experience. The PCB includes USB UART (useful for boot-loading), onbiard powersupply, ICSP header and all IO tracked to headers.
For the MQ Sensor variant, see the following link Sliver XX - MQ Tester