RepRap Motherboard v1.2

by MakerBot, published

RepRap Motherboard v1.2 by MakerBot Apr 12, 2009



RepRap Motherboard v1.2 by MakerBot is licensed under the GNU - GPL license.

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This board is the brains behind the Generation 3 Electronics. The heart is a Sanguino which is an Arduino-compatible board that is powered by an ATMEGA644P chip. It has connectors to hook up all the various peripherals that you'll need to drive a RepRap machine. It has headers for three stepper drivers, as well as 4 RJ45 connectors for Extruder Controller Boards. Not only that, but it has an SD card and a connector to hook it up to an ATX power supply.

Some highlights:

* Onboard atmega644p - 64K flash space, 4k ram, 32 I/O pins, Arduino compatible.
* 3 x Stepper driver connectors with min/max inputs.
* Built-in SD card socket for printing from file and buffering large print jobs.
* RS485 connection for noise-free communications with extruder / toolhead controllers.
* ATX power connector for power. It can also turn the power supply on and off.
* Headers to allow existing Sanguinos to plug straight in.
* I2C headers for simple hookup of external peripherals.
* On/Off switch for instant-kill and simple control of the entire system.


Instructions will be posted on: http://www.reprap.org/wiki/Motherboard_1.2

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That link isn't working. Can we have an working link to instructions?

Hmmmm, wonder if I can get good enough in Eagle to make this all surface mount, or at least small enough to fit in the makerbot build area...

I like the design... but,
Could, for the next revision, the SD card slot be turned 90 degrees so it faces the same way as the RS-485 ports?