Limit Switch
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Hi all,
Anyone tried adding limit switches and will they work automatically sending signal to Mana board for home positions.
https://www.banggood.com/5Pcs-Mechanical-End-Stop-Endstop-Limit-Switch-With-Cable-For-CNC-3D-Printer-RAMPS-1_4-p-1117731.html?rmmds=search&cur_warehouse=CN
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@vivek.khanna If you are using firmware and software that supports them, yes they work fantastic and are the #1 upgrade in my opinion.
In case you were wondering, yes T2Laser supports them
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That's music to my ears.. can I install them with Mana SE board? any specific port where I can attach the connector?
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@vivek.khanna There's no connector but you only need to solder a wire to the D9 pin.
If you use my default firmware, you would wire 2 normally open (N.O.) micro-switches in parallel between D9 and GND.
There are other options if you prefer to have separate home switches, I only do this on a CNC machine as it's safer to use N.C. switches in this case (on large machines, the EleksMill is fine with N.O. setup).
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our factory firmware dont support limit , but you can use official firmware to use it
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@EleksMaker-Z Your next control board needs to have header pins for D9, D10, D11 etc. so users can add more features. The Mana CNC has a header but it doesn't include the necessary pins.
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@Zax any other board that has this feature onboard itself?
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@vivek.khanna I have one on my CNC with header pins for all ports but it is no longer available, there are others but most have other issues.
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ok, so the best is to solder onto mana?
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@vivek.khanna Yes, that's what most people do. You could bend a leg out of the socket and use a jumper cable but that's only for someone with no soldering iron or ability.
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@Zax said in Limit Switch:
@EleksMaker-Z Your next control board needs to have header pins for D9, D10, D11 etc. so users can add more features. The Mana CNC has a header but it doesn't include the necessary pins.
but our new board use anther chip in stead of ATmeage328p , maybe dont have enough rom for limits
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@EleksMaker-Z It is still a clone of Arduino Nano, so works the same. I have your latest Mana and it is working OK with limits.
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and what is the difference between the new chip vs old chip, is it faster or just the compact design with no/less scope of development?
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@vivek.khanna Original chip is made by Atmel Corporation (now owned by Microchip) a well known brand name, just like the original UART was by FTDI. The Chinese version (what he calls the "new" one) uses the CH340 UART and a copy of the ATmega328p processor. It works the same but is cheaper as they have no R&D costs, just reverse engineer the design.
The problems I have found with the copy are poor thermal performance, meaning with long jobs it can start to have memory issues and crash.
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So shall I use arduino nano with cnc shield .. that should be better in terms quality and could fulfil my limit switch requirement as I think in my new would be machine with lead screws , limit switch should b there to avoid any possible accidents ...
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@vivek.khanna Are you thinking of something like this?
I don't know if it has D9 on one of the header pins, probably, but this should work the same way as the Mana CNC.
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@Zax nope..its not getting on the market ... its still in test stage...and its use LGT chips , cause Atmeaga328p chip is no longer supply
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@Zax so i moved source code based on GRBL to this new chip
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Nope sorry! I didn't try it yet.
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@Zax ok Thanks, I'll probably look for some more options and will check with you before ordering..
