The sensor has a digital (I2C) interface. Attaching it to the flora is simple: line up the sensor so its adjacent to the SDA/SCL pins and sew conductive thread from the 3V, SDA, SCL and GND pins. They line up perfectly so you will not have any crossed lines. You can only connect one lux sensor to your Flora, but you can connect other I2C sensors/outputs by using the set of SCL/SDA pins on the opposite side. The current draw is extremely low, about 0.5mA when actively sensing, and less than 15 uA when in powerdown mode.
For more technical information about the TSL2561 luminosity sensor, check out the TSL2561 guide which shows the more conventional breakout Adafruit also makes for this sensor.
- Flora main board
- Flora lux sensor
- Conductive thread (2 or 3 ply)
- Fabric inside an embroidery hoop
- USB A/MiniB cable
- 3xAAA battery holder