3KU Capacitive Sensor Upgrade

Some quick info on addition of a capacitive sensor to a 3KU K3000 3D printer.

In order to use the probe a small amp circuit must be used. This circuit boosts the 5V RAMPS signal to 9V, and amplifies the probe sense signal to ~4.6V.

Soldering this up on a proto board is relatively simple. Let me know if there is interest in professional PCB's. If there is enough I will make a small run.

Component List:
Probe:
https://www.amazon.com/gp/product/B06Y4MCSQY

Step-up Converter:
https://www.aliexpress.com/item/1pcs-MT3608-2A-Max-DC-DC-Step-Up-Power-Module-Booster-Power-Module-For-Arduino/32612743227.html

LM358 Op-Amp:
https://www.aliexpress.com/item/Free-shipping-10pcs-LM358-LOW-POWER-DUAL-OPERATIONAL-AMPLIFIERS-LM358N-Amplifier-DIP8-LM358P-A030/32588849094.html

I have created a listing on OpenBazaar for the PCB, a kit, or a fully assembled unit:

Item:
http://openbazaar.com/store/QmVFRGwApdcef56Be7FPXnXQaB79rYrve3otFsrWvSwbAu/3ku-capacitive-sensor-apmplifier-board