Midwest RepRap Fest this weekend

11The world’s biggest open source hardware 3-D printer festival is this weekend in Goshen, Indiana (USA):


2018 Midwest RepRap Festival (MRRF)

Friday, March 23, 2018 at 3:00 PM  Sunday, March 25, 2018 at 6:00 PM (EDT)

What is MRRF?   It’s the worlds largest celebration of open source 3D printing with over 1,000 people from around the globe attending in 2017.   If you are a hobbyists, enthusiast or any level of user of 3D printing then come on out and enjoy the weekend with others.  Not sure what 3D printing is or want to learn more about it?  Perfect!  Come out and see what it’s all about.

Screenshot from 2018-03-22 13-42-07

Hackaday has a great recap of MRRF last year:

The Midwest RepRap Festival Spectacular


Check out the MRRF newsletter for the latest details and follow MRRF on Twitter.  And look for our Drew Fustini this weekend who will, of coruse, be wearing purple and carrying lots of OSH Park coupons to share!

Midwest RepRap Fest this weekend

DRV8818 Stepper Driver Module for 3D Printers

RAMPS compatible driver module based on DRV8818 by Dean Gouramanis:

Screenshot from 2017-11-15 01-01-04

DRV8818 Stepper Driver Module for 3D Printers

The goal of this project is to fit the DRV8818 driver circuit onto the standard 0.8″ X 0.6″ PCB size used in RAMPS 3D printers. DRV8825 drivers are a popular choice for desktop 3D printers, because they can provide up to 2.5 amps peak current. The DRV8818 is a similar IC capable of driving up to 3.5 amps, but the circuit is too large to fit on PCB using regular methods. Also, without a propper heatsink it will overheat.

Schematic, gerbers and mechanical CAD files are shared on GitHub:


DRV8818 Stepper Driver Module for 3D Printers

Midwest RepRap Fest in 2 weeks

Every year, sometime in March, the world’s preeminent 3D printing enthusiasts gather in the middle of nowhere This is MRRF, the Midwest RepRap Festival. It’s only two weeks away. You need to come. Get your (free) tickets here. I’ll be there, and Hackaday is proud to once again sponsor the festival. I need to backtrack a…

via Two Weeks Until The Greatest 3D Printer Meetup On The Planet — Hackaday

Midwest RepRap Fest in 2 weeks

Parallel port interface for FPGA board


Machinekit is a platform for machine control applications.  It is based on LinuxCNC and can drive mills, lathes, 3D printers, laser cutters and more.

Machinekit can run on an Altera SoC which combines a hard silicon ARM core with a FPGA.  Charles Steinkuehler has been working with the DE0-Nano development board from Terasic.  MachineKit runs on the ARM core with the FPGA configured as a MesaNet card:

DE0-Nano_Soc and the DB25 interface board


Charles designed a DB25 connected interface board, with pin-outs matching the P2 and P3 headers on a 5i25

cdsteinkuehler has shared the board on OSH Park:

DE0-Nano_DB25 V1.0


Mesanet DB25 daughter-card adapter for Terasic DE0-Nano development board

Order from OSH Park

Parallel port interface for FPGA board