An irradiance meter was constructed to evaluate solar panel
performance. This project used the Amicus compiler and a 18F25K20
operating at 48 MHz with a 12 MHz crystal and 4xPLL. Amicus has
features that make interfacing to the Taos TSL-230R light meter chip
simple. Since the 18F25K20 is a 3.3V part, a pair of AA batteries
provide the power.
The light sensor board connects to the tall header pins on the I2C/SPI
connector. The 4 port pins were used to control sensor sensitivity and
read the output.