A circuit board to upgrade a Denford Micromill / Lathe to a GRBL controller with optional BluetoothDesigned by Damped in Canada
Please note that shipping can be very slow due to COVID19 delays. If you need the boards quickly, let me know before you order and I can add other shipping options. Thank You for your patience, Jonas.
Why I was given a Denford CNC mill that is in amazing condition. It was controlled through a proprietary software that is no longer maintained. Instead of reverse engineering the serial protocol that…Read More…
I was given a Denford CNC mill that is in amazing condition.
It was controlled through a proprietary software that is no longer maintained. Instead of reverse engineering the serial protocol that interfaces to the old controller, I decided to make a new controller.
The new controller is based on GRBL and sits on the 96 way header. It allows for a microcontroller to be plugged in and run the machine.
All inputs are protected with clamping diodes to protect against voltage spikes. Additionally there is an RC filter which debounces the switches and a buffer.
Because I don't have a computer near my CNC, I decided to add the option to add a Bluetooth transceiver to the board. This lets me connect to it using my phone and this works amazingly well. I do all the homing and Gcode streaming through an app called GRBL Controller. Everything works great!
If you have a lathe that has an encoder mounted to the spindle you will not be able to use this with the board to do threading. GRBL does not have the ability to read the encoder and sync the X and Y axis with it. If your lathe does not have an encoder it couldn't do threading anyway. Profile cutting still works!
A fully tested, fully assembled board. The blue microcontroller and the Bluetooth module are optional.
If you have any questions please contact me!
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Tom | March 5, 2020
Andrew | Dec. 29, 2019
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