12V 50Ω solenoid driver. Can be chained to control more than eight solenoids.
The solenoid driver uses a shift register with a latch to control its outputs such that a singe microcontroller (e.g. Arduino) can control large amounts of solenoids whilst only requiring 3 output pins.
- Too big thermals reliefs on; U1-pin8, R12..R15, R24..R27 (they cool too quickly while solder...