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Forum Index : Microcontroller and PC projects : The 2350B 64 pin board for my CNC
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phil99 Guru  Joined: 11/02/2018 Location: AustraliaPosts: 2603 |
A microbridge is perfect. |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1358 |
This was my philosophy since forever but the only failure that I can remember was when someone, somehow managed to apply 110V AC to a 24V DC input. These carrier boards are inexpensive enough that I'll include spares in a care-package. I was just populating a breadboard and even though I do this frequently, I still managed to bend a pin, even when using my pin straightening tool. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7852 |
TBH I'd always try to avoid sockets in industrial stuff. They are always a weak point. If you have to use them then use good ones as the risk of corroded pins is less. Opto-couplers are very rugged. If you want belt and braces fit a series resistor then a zener before the opto's series resistor. Use it to limit the opto's maximum current to about 10mA at the zener voltage. The zener will also give reverse polarity protection. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1448 |
Well opened up Sprint Layout yesterday only to find the wheel on my logitech mouse was completely stuffed  and was forced to shut Sprint Layout down. So went to the place I bought it from only to find it was 13 months ago so out of warranty  anyway $14 for a new mouse and now got 2 dongles on the the USB front ports on my desktop. also grabbed a 4 port unpowered USB hub for the project. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7852 |
Mice seem to have a habit of dying at the least convenient time. :-( I've now accumulated a standby wireless one and a couple of wired ones that I can use in case of emergencies. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1448 |
Well I have been letting my shed run 24/7 as the load with my beer fridge and the lights is only a 5 amp draw on the inverter anyway with the last week it has been cloudy as and when I looked on my victron app saw over night lows of 22 volts  So checked the gravity in my shed battery and yep flat as a tack  so spent the last 2 days with the inverter off charging the battery and with no load on the battery over night it will be interesting to see the low voltage using the app.Anyway toady spent most of the day working on my CNC where I mounted the DM556's on the sides of the top tray. Now just got to run all the step/direction cables to that breakout board I made then it will be ready to test with that code again. |
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| Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1448 |
Well got some wild weather here and over night my ol' trusty F&P wind genny fully charged the shed battery  Anyway unwound some Cat6 cable to use for the data lines and slowly getting there wiring it up, now got all the limits and E-stop wired upto the expansion board and with every connection checking with my DMM to enure continuity. I still need to setup my breadboard with a 2040 and that ILI9488 LCD so got some visual when testing out that direction/step code. Once it's wired up I will take a pic to show how it's all wired up then the fun can start. Cheers Bryan |
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| Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1448 |
Ok got it all wired up and all checked so the next step is setting up the 2040. Now on the left picture one can see that green board thats where all the wires go and put separate green lugs for the output. The red and green wires are for the spindle motor and the blue and black are 2 spare inputs from the motor connection so a trace can be later made and used.   I did have the right termination fittings for the cat6 wire and each DM556 has been pulled down to earth so a high signal will be needed. Did this before with the test so it shouldn't be a problem. |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 1358 |
Now would be a good time to check your fire extinguisher |
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| Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1448 |
That wood bench has been on there since day 1 of my CNC mate Now where the X-axis 556 is I did put in a new side for it. As it was dark in the there I just set up a 3 section LED strip which did give plenty of light but also got nice and warm too so once everything is up and working that light won't be needed. I did stick it on using double sided tape and it did fall down a couple of times that when I noticed the warmth. Now the main table is some high voltage switch board stuff that is easily drilled and tapped and being 20mm thick it doesn't bow at all. So if I do have time tomorrow I will be testing each axis and putting a dial indicator on to check travel down to 0.001" Then the huge learning curve can start on the coding and now the V6 manual is out now may just use that $12 colour laser printer to print a copy  If those DM556's do get warm in use I have a heap of heat sinks so they be remounted on them. Now once the CNC is all working I will be moving it out of my shed and down to the area I have in the house shed and it is setup to be be removed from the frame it's currently on. Phenix the CNC has 100x10mm flat bar at each end with that 20 mm board screwed on each end so when I do want to set it up in it's final destination I will more than likely fabricate up a steel frame for it. But between now and then is going to be awhile as I can't see the finish line from here at the present moment. Edited 2025-07-09 19:19 by Bryan1 |
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