@cellularmitosis
12 boards publicly available on BoardRepo.
Public boards
A small board for a single precision resistor, which uses machine-pin headers for a 4-wire connection.
A board which provides isolation for a TTL serial TX / RX pair.
A few breakout boards of commonly needed circuits when creating breadboard prototypes.
A circuit board to control automotive headlight relays.
A board for testing a TTL Serial communication channel.
An LTZ1000-based 7V reference (circuit by Andreas)
A board for isolating a TTL serial RX / TX pair using 6N137 (8-pin) optoisolators.
A board for isolating a TTL serial RX / TX pair using 4N35 optoisolators.
A simple adjustable voltage, current limited bench power supply using two LM317 regulators.
A very basic LM399 voltage reference board design.
A small, pluggable 7V LM399 reference module.
An adjustable voltage and current limited lab power supply, implemented with a traditional op amp and pass transistor architecture.