We designed a complimentary LED board with approximately the same form factor as the Adafruit light sensor board. The LED board is connected to the light sensor board via a 4-pin cable and JST SH connectors. The open hardware KiCad design files can be found here: https://github.com/iorodeo/i2c_led
- Dimensions: 25.4 mm x 20 mm x 1.6 mm
- Two 4-pin JST SH connectors
- Four M2.5 through holes for mounting to the cuvette holder
- Surface mount LED and resistor. Any 0603 LED can be used here.