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Re: Power supply - 11 years ago
so what if i took the unneeded wires out untangle them (only thing i can think of which would generate heat) all i wanted to achieve is a simple solution to test my motors when the arrive this isn't intended to be used with my printer as i'm going to use a 360 psu and female connector. i attached the connectors the red and black hacked out of a old dc power supply, i just put it into the box soby chris33 - General
Re: Power supply - 11 years ago
yes how do i check that without a load i know from the label it says that the yellow supplies 12v 17a and i check that the connectoe which reads 12.05 v but i read i need a load to check amperage?by chris33 - General
Re: Prusa i3 rods list - 11 years ago
im even confused too but i imagine your talking about the box framed version as im building the single frame and these are X Axis; 2x 370mm M8 smooth 1x 20mm M8 smooth (for extruder idler, use 8x20 threaded rod or grub screw instead as substitute) Y Axis; 4x 205mm M8 threaded - Note 210mm for nyloc nuts. If they are cut to exactly the same length will make assembly easier. 2x 350mm M8 smooth -by chris33 - General
Re: Power supply - 11 years ago
one more question obviously i'm only going to use this to test my motors but come to think my psu supply is 12v 17a on the particular rail i soldered to the connectors, now to run the motors i need to the wire it up too the 5a on the ramps but shouldn't the line not be 12v 5a, or does it step it down to 5amp on the boardby chris33 - General
Re: Power supply - 11 years ago
ok i took all the gadget 3d stuff out the box and recycled it i made a quick 12v test psu for my motors with the psu i have i wanted to make it simple without butchering much of the wires so heres my frankenstein psu the switch will be slotted in the box sorry for dark photoby chris33 - General
Re: Prusa i3 - stainless steel? - 11 years ago
if you get the it cut by waterjet they should be able to cut 2.5mm depending on their tolerances, lasers will just mark them tap the holes to 3mm too match the parts but i tapped mine to 4mm and changed the hole sizes in the rp partsby chris33 - General Mendel Topics
Re: extruder stepper motor - 11 years ago
im soughted going to use a pg35l stepper motorby chris33 - Plastic Extruder Working Group
Proper chuffty - 11 years ago
Designed and an extruder from scratch for the prusa 13 build i'm doing, it's amazing to see something from my head onto cad on my computer then in real life i have to thank Plexter a fellow forum member who printed this out for me the quality of the print is awesome heres are the i apologise for the big picturesby chris33 - General
Re: Prusa i3 - stainless steel? - 11 years ago
yeah struggle on small holes what about getting one milled where are u uk/usaby chris33 - General Mendel Topics
Re: Prusa i3 - stainless steel? - 11 years ago
Ok ive worked laser cutters, and I have never experienced difficulties cutting aluminium, have you tried waterjet cutting insteadby chris33 - General Mendel Topics
Re: Power supply - 11 years ago
right as i got my multimeter through the post today i thought would give it a try, so i got the old atx and powered it up by shorting the green wire to the ground think im going to hack this just for testing purposes and learning curve i have another voltage with screw cap connectores and a switch ill even try and re use the led,by chris33 - General
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
because i have 5 drivers and only 2 are which for the extruder instead of using the 2 on Z i Can put one on E1 and one on Z, would there be any benifit from doing so?by chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
ok where do i measure then once plugged in, makinging sure im supplying the 1A and this will prob see the end of my questions lolby chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
i know its just going to be plug them in adjust the trimpot but what i was original asking I am going to take this down to simple terms for me to be able to put across what I am trying to do when the motors arrive, right i plug my steppers in making sure the trimpot set low ( motors probably won't move) now I would adjust the trimpot till I get the motors to turn, now im stuck from here onwards aby chris33 - RAMPS Electronics
Re: Power supply - 11 years ago
yes but theres 3 12 v and 3 gnds im only need 2 of each what did you do with the spareby chris33 - General
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
chris33 Wrote: ------------------------------------------------------- > definitely learning curve this is the data for my > motors > Part No.: 42BYGHW811 > Frame Size: NEMA17 > Step Angle: 1.8 degree > Voltage: 3.1V > Current: 2.5 A/phase > Resistance:by chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
definitely learning curve this is the data for my motors Part No.: 42BYGHW811 Frame Size: NEMA17 Step Angle: 1.8 degree Voltage: 3.1V Current: 2.5 A/phase Resistance: 1.25Ohm/phase Inductance: 1.8mH/phase Holding torque: 70oz-in Roby chris33 - RAMPS Electronics
Re: XBOX 360 Power Supply, last connections? - 11 years ago
right im going the same direction as using the female connector im powering my ramps with two 12v lines one too the11a and the other tothe 5a side, and there iss 3 x12v and 3 gnd do i splice 1 of the 12v to the other leaving me with 2 12v and same with the gnd or do you have to terminate the extra 12v and gnd?by chris33 - Controllers
Re: Power supply - 11 years ago
yeah after deciding to go down the 360 model i did find out what you mean make sure i get the right one, i only knew what you meant when i was trying to find a solution to hack the psu easier, so i decided to purchase the female connector on ebay and wire it from there so all i need to do is plug the power supplyby chris33 - General
Re: Reprap Morgan - Release party 14 May - 11 years ago
The Link doesn't work for me?by chris33 - General
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
i know this sounds stupid 2A * 8 * 0.1 = 1.6V at REF and for me to understand that acquisition does than mean because my steppers have the voltage rating of 3.1v I would basically under running them and if i wanted to go on say a mediocre setting run them on 1A i will even more underrun them by only giving them 0.8V and allow you any laugh out louds and ha has as you like i need a sit down braiby chris33 - RAMPS Electronics
Re: [Q] How much PLA to produce i3 Prusa plastic kit? - 11 years ago
can you not use printrun and it gives you a estimate caluculation in the console once its finished slicingby chris33 - General
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
yes i do understand but i want to know what to check before i start plugging things in i don't want to plug my psu to my ramps and blow something and i don't want to plug my motors in and put strain under having the wrong amperage at the startby chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
so where do i start can i check my output voltages and amperage, can i just have it plugged in too the usb or will i need to plug it into the psu to check the voltages and amp out the the drivers, and a good start would it be making sure that my drivers have the output to 1a as i know they rated to 2a output but start low and increase if needs be. s there and youtube tutorials i can watch or wriby chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
definitely confused.dot.com, i back tracked myself and went to the stepper motor wiki and found that my motors have been used on other machines, so its back too understanding voltages and stuff to make them run correctly (good job they ain't arrived yet so i can do a lot of reading and posting questions). The learning curve has now hit the steep vertical which i knew i'd approach soon or later loby chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
oops think ive made my 1st mistake and got too powerful stepper motors for my buildmy stepper motorsby chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
VREF Calculation Formula REF = I_TripMax * 8 * 0.1 I_TripMax - Trip current of your motor (A) Example: 0.4A * 8 * 0.1 = 0.32V understanding that my motors are 2.5a so 2.5a * 8 * 0.1 =2vby chris33 - RAMPS Electronics
Re: what can i do now Ramps/Arduino quuesion? - 11 years ago
srry i found the wiki about the g3d driverby chris33 - RAMPS Electronics