Recently, I've found an alternative to wiring allegro pololu stepper drivers on a breadboard with a bunch of resistors and jumpers to the Smoothieboard.
Instead I'll be using a DQ860MA or a TB6560 Stepper Driver Controller. It is a bit more expensive than a pololu driver, but I don't have to worry about pcb boards and other knick-knacks. Plus, it allows me to drive much higher current steppers, say a NEMA23 with 282 oz-in of torque.
This is almost 4 times as much torque that is available with my high torque 76 oz-in NEMA17s.
Sunday, January 25, 2015
Thursday, January 15, 2015
Delta Printer in.... Alpha stage
Any time you design anything, you know there are iterative processes to all design as they improve.
I am moving away from Boroglass since it is expensive, this is not all bad. I was able to find a precision aluminum plate with a tolerance of .005" which is absolutely terrific for 3D printing. My print diameter will still be 400mm +/- a few mm.
As for pushing the envelope, instead of using a stationary tool holder, I plan on using a stepper driven tool holder that will rotate. Disengage the electromagnets on the effector and and the stepper will pull the tool head above and then the tool holder will rotate and switch the tool head and then return to the effector where the electromagnets will engage once again.
Short and sweet for now!
I am moving away from Boroglass since it is expensive, this is not all bad. I was able to find a precision aluminum plate with a tolerance of .005" which is absolutely terrific for 3D printing. My print diameter will still be 400mm +/- a few mm.
As for pushing the envelope, instead of using a stationary tool holder, I plan on using a stepper driven tool holder that will rotate. Disengage the electromagnets on the effector and and the stepper will pull the tool head above and then the tool holder will rotate and switch the tool head and then return to the effector where the electromagnets will engage once again.
Short and sweet for now!
Thursday, January 1, 2015
Happy New Year!
Happy New Year everyone and I hope everyone had a holiday. Short update today since it is the new year and all.
I will be moving forward with a Snowstock derivative which itself is a derived from the Wolfstock Delta Printer. The largest difference between the two is that the Snowstock rotates the belts and puts it through the linear rail channel.
To minimize the amount of different voltages used, I will be foregoing the 110V mains IR Heater Lamp that is 240 Watts in favor of a 24v 200W car heater which I can control via an SSR and plug it straight into my 24V 792W power supply.
With a 400W bed, 200W heater, 40W hotend, 2W laser, and about 10W from Smoothieboard the total wattage is 652W at absolute max.
These leaves 140W of overhead to control other things such as sugar extruders, electromagnet, led lights, and fans. Plenty.
I will also be experimenting with sugar extrusion, by laying down powered sugar and the running over it with a flavored substrate to harden it and then build it up layer by layer. We'll see how that goes!
I will be moving forward with a Snowstock derivative which itself is a derived from the Wolfstock Delta Printer. The largest difference between the two is that the Snowstock rotates the belts and puts it through the linear rail channel.
To minimize the amount of different voltages used, I will be foregoing the 110V mains IR Heater Lamp that is 240 Watts in favor of a 24v 200W car heater which I can control via an SSR and plug it straight into my 24V 792W power supply.
With a 400W bed, 200W heater, 40W hotend, 2W laser, and about 10W from Smoothieboard the total wattage is 652W at absolute max.
These leaves 140W of overhead to control other things such as sugar extruders, electromagnet, led lights, and fans. Plenty.
I will also be experimenting with sugar extrusion, by laying down powered sugar and the running over it with a flavored substrate to harden it and then build it up layer by layer. We'll see how that goes!
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