Using it If you are using Particle Build (Web IDE), search for the library SerialBufferRK and add it. If you set the ADDR pin high or low, use TSL2561_ADDR_HIGH (0x49) or TSL2561_ADDR_LOW (0x29) respectively. The USART serial buffer is only 64 bytes, but by using a much larger buffer (say, 4096 bytes or even larger) you can greatly reduce the likelihood of lost data. The default addess is 0x39, which assumes the ADDR pin is floating (not connected to anything). Connections = Connect SCL to analog 5 Connect SDA to analog 4 Connect VDD to 3.3V DC Connect GROUND to common ground I2C Address = The address will be different depending on whether you leave the ADDR pin floating (addr 0x39), or tie it to ground or vcc. To assign a unique ID, simply provide an appropriate value in the constructor below (12345 is used by default in this example). You should also assign a unique ID to this sensor for use with the Adafruit Sensor API so that you can identify this particular sensor in any data logs, etc. The ADS1115 is a 4-Channel Analog to Digital Converter. To use this driver you will also need to download the Adafruit_Sensor library and include it in your libraries folder. #include 'Adafruit_TSL2561_U.h' /* This driver uses the Adafruit unified sensor library (Adafruit_Sensor), which provides a common 'type' for sensor data and some helper functions. Start in terminal your Particle CLI with the command

According to the datasheet, up to 40, 000 lux can be measured at maximum The 17, 000 lux during initialization are hard-coded from the Libary and come from a test by the publisher (see at the end of Adafruit_TSL2561_U.h). The values increase with increasing light influence: on a nice, sunny day on the terrace I could measure up to 38.000 lux. Otherwise you will receive the provided error message.

Functioned without problems with adaptation of the PIN assignment. In the Particle WebIDE already the necessary Adafruit-Libary (in several options) was available (search for ADAFRUIT_TSL2561_U) so I decided to flash the existing example on my photon.

CAN Bus is a message based protocol that can be used for multiple device. The real example of CAN Bus application can be found in speed car data sensor that can be transferred to the rpm indicator. Since D4 is not addressed, I can easily create GND here and ensure the power supply via VIN or 3V3 via photon. CAN Bus, stand for Controller Area Network, is one type of serial communication that usually used in industrial and automotive environments. I did not even bother with Jumper Wires, but plugged it directly onto the mini breadboard. It comes with I2C and can be easily connected to the photon at D0 (= SDA) + D1 (= SCL).

Partical io serial library