mcp23017-board.zip

Design by: 33448

R1-4 10K, D1-2 1N4148, C1 0.1uF, the rest you see from the photo. Its a Q2W design, there's stuff online about it, runs on an I2C bus. the dimensions are the same as all mu small boards here

Price Varies

Size
5.0 cm x 5.0 cm
PN
107-889