Zat German wrote:One of the problems with the RAMPs design(with pololus) is that the stepper drivers' ICs are supposed to have their heat drawn from the bottom, not from the top with heatsinks. If you could account for this in the design, that would definitely be a step in the right direction. I believe this is one reason why some people surface mounting the drivers on their designs, instead of using modules. However, having replaceable modules is a good thing in my book.
Enraged wrote:I haven't purchased my electronics, so I would be interested in this. Running at 24V would be nice.
Regarding the LCD, check out the Adafruit LCD Shield: http://www.adafruit.com/products/714
It only uses 2 pins to control the LCD and buttons. Something similar this would be a great add-on for your board, allowing you to mount it in an accessible spot. Maybe have the buttons on the LCD board control functions such as start, stop, loading a file, adjusting speed (maybe % based so you can adjust speed on the fly?) or extruder temperature (tweaking the temperature of the extruder without changing software would be nice).
IPvFletch wrote:Is that $130 including the Arduino Mega and drivers, sensors, etc?? Many proven (complete) kits are selling for $180, so you'd have to beat that, for an apple to apples complete kit. The LCD is nice, probably a $25 add-on though as not everyone would want it. The idea of exposing the LCD through a square cut into the upper panel is great, and using the upper panel (aluminum handle part) for the heat sink is an amazing idea! I do wonder though how hot it will get, but you could just print a plastic handle grip if need be.
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