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Uploaded on Dec 4, 2011
This is the first part of a CNC project I'm starting on. I took a project box from radio shack and mounted a circuit board with 2 relays and 2 diodes, and used some cord with 3 wires in it(Sourced from my dog when he was a puppy playing with the vacuum) to trigger the relays from a irf540 mosfet connected to a Teensy 2+ Microcontroller that is running Arduino code. The code is testing the relays and outlets individually, alternating back and forth, powering a light bulb, and a cheap dremel clone.
At the end of the build for this cnc project this part will control the tool heads/ accessories on the cnc. At the moment i'm a little unsure on what tool heads I might use. I have a source for a free beat up drill press from a friend which might make a good tool head. but for precise cuts I might use this dremel clone from the video.. I also will experiment with a laser as a tool head on a block of wax, it might be good for some metal casting as another project idea for a later date.. Accessories might consist of a pump with some cutting oil, or a 120v light
for the cnc side software I'm currently considering GRBL to act as a gcode interpreter on the microcontroller.. The next few weeks I'll be working on interfacing the stepper motors I have with a g code interpreter. For the moment the project is on hold as I'm waiting for a few resistors being shipped from japan so I can run the stepper motors at a higher voltage, these will limit the current to a safe level. the end result should be more rpms and a little increase in torque