Three Covers for SwitchDoc Labs on Raspberry Pi Geek Magazine
SwitchDoc Labs is pleased to report that three of our project articles have been given front page billing in Raspberry Pi Geek magazine. The three projects are: MouseAir, the I2C 4 Channel Mux Breakout Board Development and the Project Curacao Wind Turbine. Check out the full articles and the front pages below.
SwitchDoc Labs has published over 30 articles over the past two years. 
Check out the full list here on our media page.
MouseAir
The MouseAir Project is complete! It loads toy mice and fires them off for the cat.
However ridiculous that sounds.
The MouseAir system is built around a Raspberry Pi controlling all the devices and connected to an iPad based control panel using RasPiConnect via a WiFi connection. We are using a Pi Camera on a pan / tilt structure to capture the cat events, examine the launching mechanism for jams, motion detection and even streaming video. See an early mouse launch here.
Building the I2C 4 Channel Mux Breakout Board
The I2C 4 Channel Mux Breakout Board is a TCA9545A based quad bidirectional translating
switch controlled via the I2C bus. The SCL/SDA controlling fans out to four downstream channels. It works for both the Arduino and Raspberry Pi.
At SwitchDoc Labs, we love data. And we love I2C devices. We like to gather the data using lots of I2C devices on our computers and projects. Project Curacao has a total of 12, WeatherPi has 11 devices and SunRover will have over 20 and will require one I2C bus just for controlling the motors. We are always running into conflicts with addressing on the I2C device. Since there are no standards, sometimes multiple devices will have the same address, such as 0x70 and you are just out of luck in running both of them on the same I2C bus without a lot of jimmy rigging.
What is the solution for this? It’s an I2C controlled 4 I2C bus multiplexer!
Front Page – “Designing and building your own board, Raspberry Pi Geek Magazine, Issue 11
Wind Power On Your Pi
Project Curacao, a massive Raspberry Pi / Arduino solar powered project has been deployed for 16 months on Curacao, a small tropical island in the southern Caribbean ocean.
