The circuit is assembled in freeform. A small template frame has been made to place each component and solder them together to form the nine gates with led and RC circuit.

Those gates have then been assembled on two rings made of 0.8mm brass wire. A simple paper template has been made to align each gate ate a 40° angle. The external ring brings VCC, the internal rings GND.

This assembly is mounted on a black 4mm acrylic plate, by three pegs on each ring, two of them being traversent to the back face.

On the back face are mounted a lipo battery, an Adafruit lipo charger with USB C, and a switch. The battery can then be charged, and the circuit powered from battery or AC adapter.

A wooden frame has been made, with the lower border mounted by two countersunk screws : it can be opened if needed, the circuit removed and cleaned or repared, the glass changed f broken, etc.

The circuit is 135mm in diameter, the frame is 180x180x37mm.