Smoothie sited driving an h-bot on Hackaday
posted on 05 Apr 2013 16:55
Read the full article featuring Wulfnor's new bot here: http://hackaday.com/2013/04/05/h-bot-style-3d-printer-moves-bed-for-z-axis/ (read more…)
A4983 on a breadboard
posted on 14 Feb 2011 14:27
The Smoothie project will use the Allegro A4983 chip to drive the stepper motors.
It's a very nice chip, it has 1/16 microstepping, can drive up to 2A, and has the simple step/direction interface.
Most common way to use it is via the Pololu Driver Carrier, but in the case of Smoothie, we want all of the 4 drivers directly on the PCB, so that they can share the heatsink/fan, and also share some components. (read more…)
MCP4331/4351 on a breadboard
posted on 13 Feb 2011 19:32
For the Smoothie project, a MCP4351 SPI digital potentiometer will be used to control the current setting of the 4 A4983.
That will allow direct control of the current settings from the firmware / via serial commands, and automatic benchmarking of the current settings. (read more…)