It Works! Arduino, Transceiver, OLED, Touch Sensor and Relay
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
Software for the mouldy shed project has progressed (but still fits on one page). Packet data with temperature and humidity is sent by the transmitter to the receiver. Touch sensor data (to control a ventilation fan) is sent back the other way.