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I bought one of these, just to have one more way to try to speed-control my SX3. I have been working on this for over a year now, with many tribulations and false starts (see the big SX3 speed...

I had forgotten all about this post, after contributing some info in the past. If you can't get any of the strip in Canada, I will get you some and ship it to you. I'd really like to see if this...

Al,

The power chips in mine are G60N100 60A 1000V IGBT's. I blew 2 of them in my controller and was able to find replacements at Mouser. I still haven't recovered from that debacle, but I have...

Although the question has indeed been asked before, there has yet to be a satisfactory answer to this. I have an SX3, and here is what I have done.

I am just finishing up a conversion of my stock...

I am truly sorry to hear this. I corresponded with Luiz when I first discovered his videos, and I told him how much I appreciated his work to document his many projects so all of us could learn from...

If you use the Tormach Tool System in conjunction with your power drawbar, it appears that you can use a MT3 collet to hold the interchangeable tools. According to the website:

Miscellaneous TTS...

I have the deluxe CNCFusion kit, and I have never been sorry I bought it. Sure, it is more expensive than run-of-the-mill ballscrews and nuts, but to me the peace of mind of not having to constantly...

Ray,

I fail to see where $30 in parts, using 3 inputs on the Smoothstepper provided specifically for MPG use, constitutes an "expensive, complicated band-aid". Having a single MPG and an axis...

The biggest problem I found was that Mach missed a lot of switches between axes. My rotary switch worked fine most of the time, but about every 10 or 20 switches it would end up on the wrong axis. ...

For a long time, I have used a single MPG along with a rotary switch for axis selection for my Grizzly SX3. This worked OK, but I eventually got tired of switching between axes; and sometimes I...

As someone who was trained in electronics a long time ago, but has pursued a career that never required it (software and project management); it is a little hard to say exactly what basic electronics...

Thanks for all these tips, Neil.

I like the idea of tacking on an LED and then powering up to see state - I will do that. I think I may also tack on a little wire loop in strategic places, attach...

Yes, I did get the IR2103's - unfortunately, swapping them out made no difference. They were about the last obvious things to change - everything else seems to be surface mount chips and passives;...

I spent some time yesterday trying to see if I could power the driver board with low voltage DC - no luck. First of all, the connections to the low voltage supplies 5v, 5va, etc can't be made as I...

Neil, I'd be interested in your troubleshooting help.

When I blew my board, it took out 2 IGBT's which were dead shorts and would blow the fuse every time the board was powered. I replaced both...

I knew there had to be some more embedded guru's out there! I'd suggest starting a new thread so your approach won't get confused with all the various false-starts we've had on this project so far. ...

Well that just plain sucks!

I swear I went to Digikey and searched for "IR2103" and all I got back was IR2103-ND 8 pin dip with 0 quantity on hand. But today I search for IR2103 and I get a whole...

Neil,

Thank you so much for these. Many things are much clearer now that I see it all together. I don't know if it would have kept me from blowing up my stuff, I usually manage to do that with...

I guess I should check this forum a little more often. There is a thread ongoing in Benchtop Machines that addresses this very issue. You can read the progress here:
...

What I see on this pin is a short positive pulse a second or two after startup, that roughly corresponds with the beep you hear on the front panel. So perhaps it is a signal that says the various...

Could very well be. I sort of thought that function was handled by the circuitry at the bottom of sheet 2, which presents a signal on pin 14 of the daughterboard when logic voltage is present and...

I got the IGBT's in last night. They were about $3.00 each from Mouser. I replaced a pair of them that measured shorted between all legs. Now the driver does not blow the fuse anymore, and the...

Thanks for that. It explains exactly how I managed to blow up $500 worth of gear. I learned much of this 35 years ago, but have actively avoided it for the past 30 years by working strictly in...

Well, I had high hopes for this weekend. I spent all week tracing out connections and creating a simplified schematic of the daughterboard; I bought an Arduino Uno and some blank ATMEGA8 chips so I...

I took the code in the Instructable in the above post and stripped out what I consider to be the irrelevant bits (regenerative braking, debugging output, etc), and we're left with this:

/*
*...

Can anyone say Arduino?

From what I have been able to gather, the ATMEGA8 chip was used in early versions of the Arduino general-purpose controller. I think they have since moved on to newer...

I've been flipping back and forth all weekend over the proper approach to the modification of the daughterboard to accomplish 0-10v control over spindle speed. My first inclination was to replace...

Thanks, Al

I was .1 off on the offset between the large header and small header - it looked to me like it was lined up between pins, so I marked it as .55 but it was actually .45; thanks for the...

Here are the results of some quick measurements for the SX3 daughterboard. I would appreciate it if someone can verify these measurements on their machine.

So after perusing the A2P schematics, it appears that the 20 pin header contains all the communication with the main board and the hall effect sensors. The 10 pin header looks to communicate with...