I look back to my old dusty K40, while my ESP32 are in the slow boat… About 6 years ago, when modifying my K40 with a smoothie board, I had a chat with @Arthur_Wolf to implement a water flow sensor, the result was it was needed to code for the Smoothieware, a step too far on my knowledge, the wate…

This was something I threw together years ago using an atiny45 [image] Flow switch safety interrupt add on Lasers Flow switch safety interrupt add on [flowswitch]

I remember that ;-)) the advantage of ESP32 is far better hardware (processing power, ram, network, pin out). Network is an interesting point, as it will allow communication with the piloting software -> this open huge possibilities. One ESP 32 card (<10usd) can do all arduino compatible like you…

Not sure if you are thinking of an integrated K40 management controller Multiple times I started down the road of building a controller that manages all things not covered by the controller and its software. I have heard that others have built one but never saw anything real … I have stopped sho…

@donkjr , you are right, it’s part of k40 philosophy (& makers) to keep the cost as low as possible. The service of a bunch of parts (<20€or$) is hudge, very simple to assemble, connect the 3 wires of temp sensor and 3 wires of flow sensor and the Led ring on the esp and you are done. the rest is to…

I’ve done several addons like manual bed hight adjustment, flow sensor, temp sensor etc. I even hacked the protocol of the widely used aliexpress USB / wireless pendant to use it with LaserWeb. I also designed an external DRO / remote for grbl (with path through serial). I’m open to deliver my ex…

Gathering material here (focus/defocus laser head) [Using Servo Motors with ESP32] great youtube channel by the way

can the 32 do the whole job, pwm for the laser, x/y etc all in one? surely would just need to be connected somehow to an old ramps board to break out the stepper drivers, the pwm pin would need boosting to 5v and need to be inverted, i2c could be used to expand its slow io needs foor like pump relay…

I think that Bart Dring uses pretty much all the available ports here: [image] Grbl_ESP32 CNC Development Board V4.1 by Bart Dring on Tindie A Board to control your CNC machine with Grbl_ESP32 Price: USD 29.95 He has a breakout that uses busses and can d…

My approach here isn’t to replace to k40 controller board but to complement it. I think a ESP 32 will not compete with a smoothie board but will be sufficient to do a lot of things (as esp 32 have a good compute power) on top. all this pin out asking to be used :wink: (flow meter, water temp sensor…

more material, this time waterflow sensor → [Interface Water Flow Sensor With ESP32 Board [BM]] to finish with servos SG90 size for k40 laser head 3D design: [Servo motor SG90 size]

K40 & ESP32 (Water cooling and more)

Lasers

HalfNormal (0.45 NACL) January 7, 2021, 4:58pm 2

This was something I threw together years ago using an atiny45