OK, so yesterday I got distracted and left the fill pump running and I overflowed the table. So I’m playing with an electronic water level sensor. So here’s my 3D printed homebrew sensor, a little Rain Sensor circuit I had laying around for a while Guide for Rain Sensor FC-37 or YL-83 with Arduino | Random Nerd Tutorials and a 12V relay. This should mitigate that boo-boo! Looks promising. Will know for sure tomorrow.
Updates:
Oops! …did not realize it is 3-5V …I been hitting it with 12V all day and no magic smoke!
I think I can replace this circuit with a single NPN transistor and a couple resistors. Will try tomorrow.
Very impressive and creative!
I stop mine from overflowing with this: https://www.amazon.com/gp/product/B079NC6GHD
Clips onto the slat about the same general area as your sensor.
Hey Tom, how did you mount your THC?
Did you cut the OEM case and flush mount the display?
Is the divider board mounted at the Plasma cutter or is that also in the control cabinet.
Do I really need the proximity sensors or does the floating z axis / microswitch do a decent job?
I took the THC03-02 enclosure apart (easy to do), took the guts out and mounted in the enclosure as shown in the post I referenced above. The front panel display and switches are nicely mounted on an aluminum extrusion so I kept that, but cut off the excess top and bottom with my bandsaw and then mounted it on the front panel of the Nema4 enclosure with a small rectangular cutout (for the display electronics) and fastened it to the enclosure with a custom strip of 3M VHB. Nice and tight and splashproof.
This is shown in the post.
I think the floating Z axis is fine unless you’re doing material thinner than 16Ga. This will warp and flex from the weight of the torch. I’m in the process of finalizing a “Poor man’s ‘Ohmic’ sensor” that SHOULD take care of this. We’ll see. PCB is due to arrive tomorrow. Maybe have it working by next Monday…
Yup, a little 3A power supply only for the Rule Bilege Pump. Once the switch is closed, power is supplied to the circuit and buzzer. The buzzer is to remind me to switch the damned thing off regardless of the fact the sensor has done its thing, stopping the pump. Works a peach, gone are the overflows (I think)
I am printing in PLA and I will definitely need to print this with supports. I can also print it on my new resin printer, but that is a messy beast. Have to wait for the torch, cause I’m uncertain of the necessary hole diameter. I also have some preliminary ideas for a break-away mount using this form factor.
