Ok, I've tryed with probe on pot and worked. I've set about 0.6V. But now I've a problems with motor, it doesn't move, just emitting a continuos peep. Motor shaft isn't connect and have no load. This is my code: #define DIR 2 #define STEP 3 #define SLP 4 #define RST 5 #define M0 8 #define M1 7 #define M2 6 int dirLevel = HIGH; void setup() { pinMode(DIR, OUTPUT); pinMode(STEP, Oby Yaro - General
Hi all, I've a problem to correctly setup DRV8825. I'm using this stepper motor: Two phase 4 lead wires bipolar stepper Rated Current 1.5A Rated Voltage: 4V Resistance per phase: 2.7Ohm +-10% Inductance per phase: 6.5mH +-20% Power supply for motor on VMOT and GND is 36v. Power supply for board is 5v. Board I'm using is Arduino Mega 2560. I dind't understand well how to measure VREF on DRV8by Yaro - General
Hi all, I've some questions about 3D object polishing. I've seen some 3D printing company offers polishing in big vibrating polishing machines. The quality of this polishing machines is equal to manually sanding objects? About nylon, I've seen a lot of acetone polishing methods with ABS, but this works with nylon too? There is some good quality products to help polish or polish finishing? I waby Yaro - General
Hi all, I want to ask how much probability there's that the belt slip and how can i avoid it. I've ordered gt2 pulleys 16tooth, but i'm worried now about belt slipping. The mass to move is big, about 2-3 kg. I've read that gt2 belt are good for high mass and also i've put a belt tensioner. I need to worry about it or not? it's better to order bigger pulley and how much bigger? (i know i need toby Yaro - Mechanics
Hi all, I want to ask how much is an ammissible deflection of mechanical parts in a 3d printer. Since we can't build a no deflection structure, how much is maximum deflection in axis or other components of commons user 3d printers? How much is in a professional 3d printer? and how much it should be so we won't see printing errors with an human eye. Thank you.by Yaro - Mechanics
Hi, what are differences between GT2 and HTD belts in precision and belt bouncing? I see they have almost same round belt profile so i can assume that there aren't any backslash in both belts, right?by Yaro - Mechanics
Hi, I want to ask what is difference between 2RS and ZZ bearing. First use 2 rubber seals second metal shield, but why first type cost a lot more than zz? have some advantages?by Yaro - Mechanics
Hi all, I'm looking for a 2GT 16 tooth pulley Cad or dimensions and paramenters to draw it.by Yaro - Mechanics
As i understood if i have a rigid structure with tensioners and maybe belt with 1/2 twist it will be good? I may try to add a belt support, but it will be really complicate to add it to my project.by Yaro - Mechanics
Hi, if i place a belt on a flat surface, what happen? vibrations? and if the belt have 2 side with pulleys and 1 side with a flat surface(triangle) there are the same problems?by Yaro - Mechanics
I wanted to avoid same problem, but i didn't find GT2 10mm belt and bore compatibles with good prices.by Yaro - Mechanics
Yes, it's a spring. Do you advice me to not use it or use something else instead?by Yaro - Mechanics
Hi, i want to build a large cnc. I chosed to use GT2 6mm belt because is cheapest. I have a dubt on how much it can afflict my precision and how much is strong(Fiberglass reinforce is strong and low elastic). I need to move a axis with 2kg of weight and i have 2 belts, so 1kg per belt. Also the total length of the belt will be 1700mm. My question is: The belt will bend on itself weight? The beltby Yaro - Mechanics
Hi, i've recently bought smooth idler pulleys for my cnc, but i've readed that smooth idler pulley is a mechanical weakness compared to normal pulley and may affect precision or create vibrations. Is that true? and how much it can influence? I don't really want to spend other moneys to buy normal pulleys.by Yaro - Mechanics
Hi all, I'm gooing to choice a motor for my project. I want to have low cost electronics but enough to run my cnc. Dimensions are 1000mmx450mm the movable axis is long 1000mm and it's weight is from 1000g to 1300g without turret and from 1400-1500g to 1800g with movable turret. It run on supported fixed rods with linear bearings. I know it's heavy. I want to ask from someone that have experienceby Yaro - Stepper Motors, Servo Motors, DC Motors
Hi, I want to ask why to use a RAMPS module(as i see on alot of sites) and not to connect directly drivers and opticalends to arduino? there is some advantages to use it(excluded mounting)?by Yaro - Reprappers
Hi all, can someone provide me a list of materials that a J Nozzle can use? I'm looking for different mechanical properties to find the stronger.by Yaro - Reprappers
I've found this link: But i can't understand what mean P1 P2 and the number between parenthesis in the grafic.by Yaro - Reprappers
It's bit heavy to build. If i use from 300 to 400mm bars, which diameter do you advice me? more diameter on X axis that have also a Y axis on it, or X and Y same diameter? Thank you.by Yaro - Mechanics
Hi all, i want to ask if there is any research or comparations to streght of object builded with 3d printers. Also how much a single wire is able to stack or melt with another single wire in a 3d printed object. I ask this because i want to know for my project if is better a 3d printer or a plexiglas cut. If it is more resistant to torque and less flexible a 3d printed panel of 3 mm thickness orby Yaro - Reprappers
How much diameter need to be to have a lenght of 1000mm? To avoid is weight, it's possible to use a linear chrome tube?by Yaro - Mechanics
Hi, where can i find a long linear chrome rods? On aliexpress i can find only max 300mm 8mm, but i need at least 1000mm 8mm. It's a possible solution to put near 2 o 3 rods? or the leap between them will create vibrations? And if i use regular calibrated steel rods from and ironware? and maybe i polish it with a 600 - 800 - 1000 sand paper?by Yaro - Mechanics
Hi, i want to start to build my first CNC(X-Y). Can someone send me some guide or something i need to read before start projecting it? I need informations about stepping motor electronics and mechanical guidance. 1) How i can do calculation to select the right motor to my use? 2) What type of power supply is better? 3) I need a control board or something in addition to arduino?(in addition tby Yaro - Reprappers