The Light to Frequency Board features a programmable light-to-frequency converter TSL230BR that combines a configurable silicon photodiode and a current-to-frequency converter on single monolithic CMOS integrated circuits. The output can be either a pulse train or a square wave (50% duty cycle) with frequency directly proportional to light intensity. Device sensitivity is selectable in three ranges, providing two decades of adjustment. The full-scale output frequency can be scaled by one out of four preset values.
Examples provided with this board will show you how to connect the light-to-frequency converter to an MCU easily. Each example contains a detailed description of the relevant program including comments. All these examples can be downloaded from this page as well.
- Demonstration of the TSL230BR programmable light-to-frequency converter with PIC MCUs. This device receives input frequency and writes results on LCD screen.