Garden hose valve
I'm replacing the manual shutoff for my family's summer-house garden tap — currently buried half a metre down in the workshop floor, under a shelf — with a motorised ball valve I can operate from a switch indoors, so I can shut the line off and drain it before winter without digging. The first build drives a CWX-15Q valve (CR05 control scheme) from a single switch using a four-transistor circuit instead of a microcontroller, cutting power at the valve's limit switches at each end of travel.
Log entries
| Ref | Date | Entry |
|---|---|---|
| LOG-01 | 2026-06-12 | Motorizing the summer-house valve with four transistors Driving a CR05 motorised ball valve from a single switch with a discrete-transistor circuit, tested on a breadboard. |