Posts in Category: Raspberry Pi

Laser Engraver

So I originally started with some old printer parts and had a small working laser engraver. I am using some drawer rails as the X axis and now I’ve got some 3/8 rods for the Y axis. I happen to have the v-slotted bearings that a friend gave me a while ago which work great as the carriage.

I ended up purchasing 4 of the precision threaded rods as the regular threaded rods you buy at the hardware store have a bit of a dead zone to them (found that out the hard way). I originally had my X axis using a single belt…then went to two motors with 2 belts…and finally swapped them over to using the precision rods. Now it is pretty solid, especially for using drawer rails to hold it together. =)

It’s all run by a raspberry pi running OctoPi and then an arduino uno with the cnc hat.

I originally had my Y axis using two 3/8 rods with a 3d printed carriage that slid onto the rods…but this proved too stiff and the laser would show a slight warping when the Y axis would change directions. I then swapped it to the v-slotted bearings and a wooded rig as the carriage. This slid much easier and required no real torque from the motor at all to move around.

My next step with this is to rig the carriage to hold my dremel and act as a sort of mini-cnc…and ultimately handle doing circuit boards!

NodeJS Garden Bench

The need

Plants keeping warm

My wife wanted to start her own seeds this year but here in Maine, you have to do that inside and also make sure you keep the right temperature during the day and night. #RaspberryPiToTheRescue !!

Took a bunch of scrap pieces of wood that I had to make the bench itself so it doesn’t look pretty but it works. We just covered it with some painter’s drop-cloths to hold the heat.

RetroPie Controller

I’ve had a USB SNES controller for a while and kept wanting to throw a Pi Zero in it, but I also wanted a USB hub to be part of it somehow.  I have been sitting on it for a while but couldn’t seem to get things to fit in nicely.  Well, today I decided not to care about form so I could have function.  So I present the ugliest controller build your eyes have seen!

Obviously, not pretty, but at least I can plug in a mouse and keyboard or whatever when needed.

Pi Zero tweak

My loving bride was able to get me another Pi Zero for Christmas!  This is the 1.3 version with the camera slot.  I decided to make it a little more capable by giving it a normal female USB slot and adding on a serial port so I can talk to it from any computer with a USB port.  Nothing too fancy but makes it a little more usable so I can skip the OTG cable.  Right now I just have a Wifi adapter hooked up to it with the connections already set…so if I’m at home or work, it will connect automatically and shoot me an email with the IP and then I can just SSH.  Kinda nice. =)