I haven't posted here in a while since I have not played with my Raspberry-Pi much. I have been working on a couple arduino controlled robots and this week I made a nichrome plastic bender that is powered by a computer atx power supply that was converted into a robotics lab power supply with extreme accuracy in 1.25-11 volts DC using a LM350 voltage regulator IC. I'll add some pictures of that below.
I had planned to add my Raspberry Pi to the Arduino robot via I2C and a level shifter. But I think I may have found a way to make the RPI have more direct control.Above is a USB controller kit with 5 digital, 2 analog inputs, 8 digital outputs and 2 analog PWM outputs. I may still need to connect the arduino to the RPI's gpio port and have certain real time events handled by the 328p (rpi time slicing under linux leaves a lot to be desired for real time IO.)
The USB experimentation interface kit is made, by Velleman and is model k8055. This is the kit, so solder/assembly skills are required. There is an assembled kit also available from velleman. This is made for the windows platform. But as I understand it, there are libraries written for Python (and other languages) and there are system hacks to connect it to the Raspberry Pi. As soon as I have mine assembled, I will post the exact methods I use to get it running under the Raspbian OS on the RPI!
I think I will start using the blog for ALL of my robotic/electronic experiments, since the rpi is only a fraction of what I am involved in. It will mean a lot more info and posts will be shared. Now onto the fun stuff, here are some more pictures of the lab power supply and voltage regulator I am just completing.
The LM350 variable regulator ready to be connected to the lab power supply.
If you want to know more about any of these projects, leave me a comment and I will be happy to share. (spams are deleted!)