Go Wild Build a Helios or Folgertech FT-5by cozmicray - Reprappers
What firmware? GRBL? Is there other firmware?by cozmicray - RAMPS Electronics
First post "get rid of endsops" Last post "working on an ultrasonic endstop using a 1.7mhz transducer to measure down to approx 10 to 5 um" Doesn't sound like getting rid of endstops ---- 5 to 10 millionth of a meter? Is printer mounted on granite block to keep it from moving a one millionth of a meter as you walk by?by cozmicray - CoreXY Machines
small DC-DC-boost converter to make 24V -60V from your 12V power supply? A DC-DC converter to handle that voltage and sufficient current would be a true feat. I think laws of Physics conserve energy (amps, volts) has to come from somewhere Simple DC DC converter may be a nice heater --- trying to keep up with current load? Got a link to your small DC-DC-boost converter to make 24V -60Vby cozmicray - RAMPS Electronics
So a rotary encoder on each of the core XY motors? Seems a rather complex algorithm required to determine X, Y position? Encoder can do 2400 pulse / rev will that detect missed steps, calibration? Will the encoder be useful at the speeds of the motors / belts? Perhaps intelligent encoder driver / decoder and a powerful computer to run firmware / software End stop -- even the most expensiveby cozmicray - CoreXY Machines
There are GRBL boards out there with more drives (four) and a lot cheaper than synthetos GRBL is firmware to drive the CNC shield (g-code to motor drive) CNC boards can use higher voltages 24-46 v Your 24v supply will cost Skimp on build? rebuild -- smoke --- rebuildby cozmicray - RAMPS Electronics
There is SCARA section Polar Machines, SCARA, Robot Arms Nick Seward doing a lot of SCARA Have your Mom do a net search for "SCARA firmware"by cozmicray - Developers
Get a GRBL board Mount it atop Arduino UNO hook up 24v power supply to motor drive Go over to shapeoko forum All kinds of info have CNC funby cozmicray - RAMPS Electronics
A power supply will supply current (amps) as needed up to the capability of supply. Things connected to power supply draw (suck) current Something in your connection is shorted -- drawing maximum current (welder) heating up --- letting out magic smoke. If you put a current meter (amps) in positive line -- you will see you are pulling very high current If you put a volt meter across the plusby cozmicray - Reprappers
Current (amps) capability The cable is rated to 60 volts peak at a maximum of 360 mA per wire and a total of 72 watts input. There will be a slight voltage decrease at that distance though it will be small. The resistance of 24 AWG copper wire is around 2.5Ω per 100 feet so the voltage drop is 2-5Ω * 0.02mA * 2, or 0.1V.Oct 20, 2010 It is generally a signal carrying wire High current of extby cozmicray - Safety & Best Practices
Just wanted to know where development log will be? I followed along with Wally? Want to follow along with Helios ? Maybe beta tester? I realize there will be Little Helios, Big Helios, Helios mark 7 1 B 3 etc until Epson or HP purchases it? Perhaps VW before Mercedes with auto park, lane departure, bidet etc? Hit or miss on your youtube and Google plus. Tnx:by cozmicray - Polar Machines, SCARA, Robot Arms
Where is the design / build home forum for Helios? A place on Concept forge? Please post URL?by cozmicray - Polar Machines, SCARA, Robot Arms
Heat up bed Home Z set Z home position adjust Z switch Move extruder to point A use feeler gage adjust bed Move extruder to point B use feeler gage adjust bed Move extruder to point C use feeler gage adjust bed Done or sensors, sensor calibration Hundred of lines of code measurement plots measurement interpretation Execute auto level measure measurement plots measurement interpretatioby cozmicray - General
Are you using standard size timing belt loops or must they be custom or made up? If made up --- How do you do it?by cozmicray - Polar Machines, SCARA, Robot Arms
We are 3D printing Degenerates ?by cozmicray - CoreXY Machines
Do you real want auto level? As I understand it -- auto level maps the bed then sends Z corrections on each layer to make it flat Do you want the Z axis moving up and down (backlash) to make not so nice layers? Is it too hard to get a feeler gage and set bed level every so often?by cozmicray - General
To get air moving thru piping NEED Positive displacement pump Piston / diaphram mechanism. Got a small model airplane nitro engine spin it with a small motor ---- pipe up to exhaust Pistion pumpby cozmicray - General
All good projects start with REQUIREMENTS an important requirement COST Trade offs BUY -- BUILD What is needed is a BREAKTHRU deposition of a material with reliability and accuracy! We are in a time frame or dot-matrix era of ink/paper printing WITHOUT big industry developing the personal 3D printer A bunch of people designing a horse will end up with camel! See: The DigitalDentiby cozmicray - General
A mod I would do on FT-5 is drive both Z axis screws with one belt. It is a direct drive extruder and will accommodate a E3D Titan Buy and print or Build (6 months) tweak, tweak again, print, tweak, rebuild? Hepa filter? Professional looking? Red, chrome, auto braking, lane departure warning, bidet, griddle???? ie: Are you looking for cheesecake on a twinkie budget Are you doing crepes wiby cozmicray - CoreXY Machines
Assume since it is in coreXY section coreXY? How about important specs? Print volume Print speed 1.75 / 3 mm filament controller A $500 Folgertech FT-5 with some mods might get you close? (not core xy) All Metal Hot-End Hardened Nozzle Enclosed Case HEPA + Carbon Filter Heated Bedby cozmicray - CoreXY Machines
UV LEDs? Tanning machine? Killing germs ?by cozmicray - CoreXY Machines
There is NO worry about perhaps 3 steps of Z-stepper for each layer? Am I missing something here?by cozmicray - CoreXY Machines
Question NOT answered Where is mechanical design / assembly of the hardware used for this SCARA arm?by cozmicray - Polar Machines, SCARA, Robot Arms
Is this correct? Yellow -- shoulder drive Red ---- forearm drive ??? where is drive motor?? Green --- Z drive motor 4? ------ extruder drive? ?What firmware? software?by cozmicray - Polar Machines, SCARA, Robot Arms
What firmware? Marlin in configuration.h file Invert stepper motor direction To inspect the extruder you would need to heat the hot end to the extrusion temperature, otherwise you can temporarily disable the EXTRUDE_MINTEMP protection. Be sure to perform the test without the filament loaded. Send extrusion command of 10 mm and check the motor rotation direction. You can invert the stepperby cozmicray - General
Paper weight with schredder? No blade control -- no flightby cozmicray - Look what I made!
Note : Kuka robot belts NOT black belts with core Probably a polypropylene belt designed for twists and tight turns. Not abused --- Designed by Timing belt engineer! Quote691175002 Here is an example of how timing belts can be abused in practice: A Kuka retails for 5-6 figures and they've broken almost every rule of timing belt design.by cozmicray - Mechanics
So Switch from leadscrew drive to belt drive? Steps on Z-motor to lift very small? Z will plummet once motor is de-energized (without brake on stepper motor. DD using worm drive -- lots of stepper steps to move bed a little. Does one have to worry about syncing teeth on Z-Axis pulleys?by cozmicray - CoreXY Machines
What SCARA robot mechanics are being used? Please URL?by cozmicray - Polar Machines, SCARA, Robot Arms