PCBWay 4th PCB Design Contest

8DI Optically Isolated Arduino Shield

This is an optically isolated 8 digital input shield for use with Arduino. It is based around the PCF8574 I2C GPIO Expander. The board is a double layer, with 0805 SMD components. Extremely well manufactured, true to designed dimensions, silkscreen perfect;y readable, all holes and footprints correct. After testing all connections perfect, with no shorts or open connections. Manufactured and delivered within a total of 5 days ! Perfect !! Thank you

Jul 26,2021
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