I have taken delivery of a couple of Larden Lamps. Both looked well contructed and had a 5 volt Solar Panel, a PCB with LEDs ans a 3.7V battery. Seemed a pity to canninalise one of them however I can use the other for its original purpose. The photos show the selected Unit and the constituent parts. Would you believe it the opening for the Infra-red Movement Sensor seems to be just right for my waterproof connector to he Solenoid. Th original PCB will be replaced by my design although a degree of redesin will be necessary to accommodate the revised form faactot and add an interface, maybe I2C to input Moisture and Temperature of the relevant Raised Bed. Then it'll be onward and upwards towards the complete syste.

Watch this space!