This projects is a device controlled thru i2C, it has a set of instructions to control two leds, two buzzers and a combination of them. The device uses an ATTiny85 and it connects to an RaspberryPi to send the commands. The instruction for the device are: - 0x00 --> Does nothing - 0x01 --> All Buzzers ON, All LEDs OFF - 0x10 --> Al Buzzers OFF, All LEDs ON - 0x11 --> All Buzzers ON, All LEDs ON For a better communication between the device and the RPi set the i2c baudrate to 100000 in /boot/config.txt file on the RaspberryPi: ** dtparam=i2c1_baudrate=100000** The i2c device code is available here: [https://gist.github.com/sergiomtzlosa/b0c639606dfe3e17d6ca6ac323177b02](https://gist.github.com/sergiomtzlosa/b0c639606dfe3e17d6ca6ac323177b02) Follow the instruction on the file to install additional libraries. The RaspberryPi code the send the commands to the i2c device is available here: [https://gist.github.com/sergiomtzlosa/ac0bdb416f55b6de1230a298e218e4df](https://gist.github.com/sergiomtzlosa/ac0bdb416f55b6de1230a298e218e4df) The device was sent to production and it is working.