Comments on: RepRap Motherboard

By: draughted

draughted — Wed, 18 Nov 2009 02:36:26 +0000

i’m from the cnc scene and i hope to replace my pc for a sanguino which will power a plasma cutter
it seem to be able to controll a printer, i assume that it will be able to handle the drivers one finds on serious cnc machines

By: Embedded

Embedded — Fri, 27 Mar 2009 11:07:01 +0000

Would this be suitable for a first-build CNC machine (to mark out circuit boards)?

By: Robert

Robert — Fri, 02 Jan 2009 12:06:26 +0000

looking to build a circuit board dilling machine for small short run jobs. 1 to 25 boards
my first atempt to CNC any project.got to start some where. The mechanical part is not a problem at this point (several manual machines in my shop).

By: Steveo

Steveo — Wed, 31 Dec 2008 02:37:13 +0000

To be honest, until the RepRap can produce microelectronics of its own, I’d prefer to see a version stripped down to simply being a dumb terminal for a PC, and having the absolute minimum of control/comms circuitry onboard. Let ubiquitous, upgradable PCs supply the brains, and let the RepRap contain an absolute minimum of parts that have to be sourced elsewhere.

Come to think of it, both bare-bones and high-end RepRap designs have their place, and either should be able to produce all of the former or significant parts of the latter. That way, no matter which version you have on your desk, you can churn out both the simpler and the faster variants, depending on what suppliers you have access to.

By: Joigotahgrogs

Joigotahgrogs — Sat, 27 Dec 2008 07:05:21 +0000

Hi, just joined the forum and I hope to get to know many of you.;)

By: jackbob

jackbob — Thu, 25 Dec 2008 18:29:51 +0000

@funkibut:

Microcontrollers like the Atmel AVRs and Microchip PICs have separate ‘memory’ (flash/ROM etc…) and ‘ram’ (SRAM), so without checking I would say the statement is probably correct.

By: Monsignor Funkibut

Monsignor Funkibut — Thu, 25 Dec 2008 17:33:36 +0000

Does the article say ‘four times the memory and four times the RAM’? Isn’t that the same thing or am I missing somethinmg about microprocessors?

By: Lida Dai Dai Hua Jiao Nang Seo Yarışması

Lida Dai Dai Hua Jiao Nang Seo Yarışması — Thu, 25 Dec 2008 16:48:27 +0000

Lida Dai Dai Hua Jiao Nang Seo Yarışması Lida Dai Dai Hua Jiao Nang Seo Yarışması

By: Corwin

Corwin — Thu, 25 Dec 2008 05:39:54 +0000

@rivetgeek

Actually bbot had it pretty darn close. The Sanguino/atmega644p board sends command signals to 3 stepper driver daughter boards, 1 dc motor driver board, and 1 pwm driver board, and monitors the opto endstops.

By: rivetgeek

rivetgeek — Thu, 25 Dec 2008 03:42:41 +0000

@bbot

that’s what the ATMega644P is for. It has the pwm and can drive the steppers, though it might need higher current for the heater so probably a relay would be needed

By: bbot

bbot — Thu, 25 Dec 2008 02:38:38 +0000

it’s got IDC connectors for all the motor controllers, not the motors themselves. the motherboard doesn’t have any of the stepper driver electronics needed to actually drive a stepper, or the dc motor stuff for extruder, or the pwm stuff for the extruder heater.