The Raspberry Pi A, and Raspberry Pi B both had a composite video out, on an composite video plug (RCA), the new model B+ uses a 4-pole socket which carries both audio and video signals. This style of connector is sometimes referred to as “TRRS”, which stands for “Tip-Ring-Ring-Sleeve”. The pin out for the Raspberry […]
For my boat automation system I plan to use RJ45 sockets and cat 5 cable for interconnecting the master and the nodes. Some nodes will have their own 12 V supply for larger loads, but ones that are just for switches and other transducers (sensors) will need to have 12 V delivered to them. According […]
Last weekend a contingent of Hackspace members went to the UK Maker Faire to show off things that have been made in the space. We had (from left to right) The Cog Clock [Bob] 3D Printed Quadcopter [Bob] CrossStitch Cat [Steph] Giant Magic 8 Ball [Tom] Arduino Robot [Alex] Infinity Mirror [Alex] Knock Clock [Alex] […]
I programmed some remote control software using a Golang receiving program on the robot and a ruby control client using my gamepad ruby gem and an xbox1 controller. It worked OK. It was a bit jerky, there’s no PWM so no acceleration, it’s either go or stop; anything not totally rigid on the robot wobbles. Also the […]
I spent all day at hacman Tuesday and Wednesday printing and tweaking robot parts. I put it all together when I got home. This is the front, the lifter arm has holes to allow me to screw in different attachments, I’ve still not designed that part of the robot yet: Here is the back view, you […]
First test of the Raspberry Pi running off battery power with no external supply at all. In the picture the 5000mAh battery is the object at the back with “5000” written on it. My multimeter is measuring the voltage output. One of the Raspberry Pi (the thing with the red light on it) output pins […]
Today I printed out and glued together the first iteration of the ping-pong ball hopper that takes up most of the space of the robot. The assembled hopper: Full of ping-pong balls, I can get 12-14 in without packing them manually. That seems like enough for now, but a larger hopper would be good. Mounted […]
I printed out the front half of my Raspberry Pi camera module mount. It serves two purposes, providing a way of mounting the camera on my robot, and giving me a place to attach the wide-angle lens I’d bought earlier.