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Electronics: RAMPS & TMC2130s

A project log for RepRap-ified Makerbot Replicator 5th Gen

What happens when you want a Makerbot to actually work?

thomas-bladykasThomas Bladykas 03/19/2018 at 22:240 Comments

So, in the last month, there have been a lot of parts deliveries: namely the hotend and most of the electronics (still waiting on the damn stepper motor wires and heatbed to show up). I spend the time mainly just assembling them and doing mockups of the new machine's systems.

Unfortunately, I was really put off at first by how complicated this looked. Breaking out the SPI conenctors from AUX-3 on the ramps and then soldering stuff to the board would just make it look bad, and at worst was permanent. I wanted to go for a nice and tidy approach, keeping all the functionality of the board with no major adjustments. Meaning if I blow up a RAMPS, I just change it out.

I finally settled on a removable breakout board. Here's the internal layout of the electronics:

Layout of the electronics. Note the broken out SPI connections- The individual CS pins are wired into the spare endstops, and the main signals are run through the Mega 2560's ICSP port to make it look nicer. This retains full functionality without soldering much except the external (removable) breakout board.
Here's how it looks mounted in the chassis, courtesy of double-sided tape. The controller fan and MOSFET are nice to have.


So, from here, I am waiting on a few things.

  1. My cloned Taurino Power board: It accepts a 24v VIN, and allows me to run it standalone through the RAMPS' D1 diode.
  2. Heated bed: Can't decide between 200x200mm or 300x200mm. Near impossible to find the 2nd but I'm gimping the printer with the 1st.
  3. Heat bed holder: Still need to machine a plate that holds it all. I already tried but using a CNC router is a terrible idea for rookies... Help?
  4. Stepper motor wires: Literally the most insignificant thing about this project but I don't think it was ever ordered... whoops.
  5. Print cooling fan: I killed my last blower fan and need to get another one.

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