Hi guys, thx to accepting!
I’m new in the CNC world, just built my “desktop” CNC with linear rails (cheap and I’ll never do it again).
Just got 2 easydriver like “unsynced”. I swap the wiring to invert X and Y motors, while the current was one (bravo stupid you will say). I tried to read about reseting an easydriver. Only found the RST input, that you need to input some high voltage, but I don’t know the procedure, and how much voltage will be enough to reset the translator ?
Thx in advance 
daprato
http://drones-xp.blogspot.com/
If you disconnect a motor while a drive is energized and you blow the drive you cannot reset it. You can only replace it.
Thx. Lucky I was than to have 2 other spare easydriver. I was asking before throwing them in the bin. Now working, I’m trying to adjust step /mm.
@Jocelyn_Da_Prato
Depending on the drive you can usually replace just the power components that failed. TB6560 drive owners know all about replacing those ICs.
@Krzysztof_Foltman yes I knew that could bend a bit. I ordered cheapest parts for my first. 1cm diameters rods at the ground doesn’t bend. But the 2 other ones flex yes. They will flex if the dremel will get pushed if it doesn’t cut enough compared to its travel speed. Not yet milled, I’m trying actually to understand seek /mm and feed rate /mm for this.
Learning cnc. Seeing if I like enough to get inventables ones or other better cnc. Built to try cutting polycarbonate 3mm sheet. Thin wood. And try carbon fiber. Quadcopter frame. But I’ll just try to cut stuff because cnc is nice hobby I think
I know with this machine I could maybe get an imprecision of half a millimetre. It’s a lot in this world. But I’ll try. Will see
@Krzysztof_Foltman
TB6560s have a low threshold of tolerance for input voltage. Within their limits they’re OK though. I designed drives to use them before the far eastern drives were available. So I know a fair bit about them today.
I for instance know what the fatal flaw that plagues all manufactured drives based on TB6560s is. That is down to the disingenuous way current limiting is handled.
Toshiba never made the TB6560 as a general purpose stepper driver IC. They had custom applications in mind. So they chose a very rigid way of handling setting the current up with them.
You have to change parts on the board (the current sensing resistors) to change the current output of the drive. The 2 switches on the manufactured boards is NOT the right way to do it!
On top of that many of the manufactured boards are locked at 1 amp maximum output too. That’s just the resistors they soldered in at the factory. So if you don’t change them you can flip the current switches on the board all you like and you’re never going to get any more current than that out of the drive.
Simply sharing my progress. Check my blog. Just starting to drawn some 3dsmax splines. Only in G01, straight segment. My X axis is really crap, my fault. I’ll swap for a drawer railing, will be better than these banggood bearing.
http://drones-xp.blogspot.ca
Yes my pen mount is really weak. But my imprecision in X is due I think from my build (beginner), and bent rod (banggood) plus the bearing that roll as sand is in when there’s pressure from the bent rod. I’ll do a quick overview video. My other axis are fine. So, it’s a mixture of my beginner skills to build railing + cheap parts I guess.
@Krzysztof_Foltman
You can get an imported dial indicator for pretty cheap. They’re about as good as the more expensive ones too. I tram my mill with an $8 1" travel indicator. It’s fine. I have another of the more sensitive pivoting indicators but I never use it.
Wow they’ve really gone up in price! Now they’re $17 http://www.harborfreight.com/1-inch-travel-machinists-dial-indicator-623.html
Still worth having one though. You can do a lot with this style.
@Krzysztof_Foltman
According to side by side testing the only place the imported indicators come up short is in even spring tension throughout their travel. But that only becomes a factor at the upper end of their measuring range. So if you’re only using the first half of travel then they’re just as good as the best indicators made. Once you get into the upper end of the range the pressure on the cheap indicators goes up. That does kind of suck too. But I never use an indicator up there. If something is a half of an inch out of whack I can usually see that by eye.
Thx guys for all your comments. I finally adjust my CNC to get less imprecision. Not perfect, really beginner stuff. Can’t wait to build my next CNC, with much better railing system, real Spindle, etc…
Here’s on my blog the adjustement that I did, and why I have imprecision somewhere. For the type of parts that I want to cut, this CNC will do the job.