Looking for information on the output voltages of load one and two. Secondly are these outputs energized automatically when the controller is cutting g code?

Those pins are tied to the raspberry pi component of the onefinity controller so it’s 3.3 volts with a maximum current draw of approx.16mA. [image] Pin1(Load2) and Pin2(Load1) of the breakout board and can be configure from the IO tab. [image] Load1(Pin2) is tied to ‘MIST COOLANT’ gcode comma…

First thank you for your response. I was thinking of using these outputs for a couple of relays RIB to be exact. But I don’t think they’ll work with that voltage. Marty

Those 3.3 volts pins are generally use to trigger relay, IOT device or SSR. For the SSR option, take a look at one of my post an particularly the ‘How to use a Solid State Relay’ link I added in reference section. Here is the master link for my post: Information to build you own Onefinity Compani…

If you can, I would highly recommend not connecting things directly to the RPI - use some sort of optocoupler . If anything happens to the input/output, it will fry the isolator rather than the RPI. Just a recommendation though.

Thanks again guys. Yes using relays was my reason for asking about output voltages. Unfortunately the rib relays that I have are 10 volts with a dropout current of around 5 volts. My game plan now would be small isolation relay to trigger my larger voltage relays. Hopefully you guys understand my li…

Hi Marty - the optocoupler should help you here. You can provide the 10v to the relays, while accepting the 3.3v input from the RPI. Alternatively you can use a level shifter - it would not be optically isolated, but is still a barrier to the RPI input. -Tom

Wow! Just spent some time on YT researching optocoupler and I can see why they offer such great cricut isolation. Seems like I have a plan now! Have you heard of any problems with EMI or Rfi? I had a Next Wave Sd120 and over the course of 5 months lost several controllers. I don’t know if it was the…

Hi Marty - the Buildbotics controller is in a metal box - that really helps protect it from EMI and RF interference (though kills the internal WIFI). If you lost controllers, it is likely something greater than external EMI - that’s usually a sign of noise on the control lines and poor power conditi…

Thanks Tom I had a next wave sd120 my first controller was running really hot and burned out. The second one I lost one of the axis. Mind you their customer service was excellent I sent the second controller back. It was about this time that I separated everything on three different circuits figure…

Output voltage of load switches?

Original/PRO Series (Buildbotics) (Gen 1)

blaghislain (Ghislain Blanchette) May 12, 2021, 12:01pm 3

There are others options (tool-enable-mode Pin15) that carry 3.3v when the M3 S# is sent, and then cuts it when M5 is reached. More info here: Tool Enable - M15 - & Breakout board - #21 by charleyntexas

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Output voltage of load switches?

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