Hi everyone I hope all is well, Just recently gotten back into coding, and a lot has changed, coming from a guy that used parallax. I wanted to use an esp32 wroom and a adc1115 module to measure voltage input coming from the plasma cutter. I do have a 0.96 inch OLED display I could use to show th…

[image] drhydromrjairo: Now it would be worth a shot to just try it without the external adc. And see if the readings from the onboard adc are okay to keep torch head from bobbing up and down just because you have a 16bit ADC does not mean you have 16bits of valid data - it depends on the ext…

[image] Dynamic control of the cutting height of a CNC plasma torch ,aka THC General Guidance With decades of electrical experience and miliseconds of programming experience I am looking to use a LEONARDO to control the cutting height of a plasma torch as the t…

Well, the ADS1115 will convert 0 ~ 5V into a number from 0 to about 26667, does that help? :neutral_face:

[image] drhydromrjairo: wondering if it could be implemented into mine but with a1602 LCD screen (to see voltage/height set) possible but remember that LCD displays are slow (in computer terms) and may upset the data acquisition and any calculations

[image] JCA34F: Well, the ADS1115 will convert 0 ~ 5V into a number from 0 to about 26667 You will need to power the ADS with 5volt to read a 0-5volt signal. A 3.3volt ADS supply and a reduced 0-2volt signal with corresponding PGA settings could give you a higher resolution (0-32767) and eas…

[image] drhydromrjairo: What seems to be the issue with adafruit library? You need to install additional libraries in order to use it, they are somewhat bloated, difficult to debug if something goes wrong and sometimes interfere with other non-Adafruit libraries.

[image] drhydromrjairo: I might of downloaded an older version of a code that didn't wanna run in the latest Arduino ide. It's not the IDE version but the ESP package version that is incompatiable. At some point Espressif switched from version 2.x.x to version 3.x.x and some code written for …

found ADS1115 - connected it to a ESP32 both Adafruit_ADS1X15 library and ads1115_we library appear to work with ESP32 core 3.3.0 - just ran some File>Examples tests

Hey thanks, that does help. I understand the values a bit better now

Can a couple of bits of information be skipped in order to keep it from getting upset? Realistically the LCD would to be able to set the height/voltage manually so z axis can travel up and down manually. I think it would be Easton the eyes as well not seeing all the numbers changing. Thank you Horac…

Esp32 wroom dynamic/torch height controller

Projects General Guidance

drhydromrjairo August 12, 2025, 8:07pm 28

I think this person explained it better than I could haha sometimes I start speaking in reverse..

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Esp32 wroom dynamic/torch height controller

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