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I have two Creality Ender 3 V2 printers with a version 4.2.2 board. One printer has the official CRTouch, and one is nearly original without a probe. I found a similar product, a DIY project called BFPTouch, and I have almost all the parts needed to make it.

BFPTouch

Model and photo source: Thingiverse.com

I use the Marlin-based mriscoc firmware on both printers. Version Ender3V2-422-MM-MPC-20231202.bin, and on my printer with the CRTouch, I use the Ender3V2-422-BLTUBL-MPC-20231202.bin version.

Is the BFPTouch interchangeable with the CRTouch, like the BLTouch and CRTouch are? Is the wiring to the board the same, and would it suffice to use the BLTUBL firmware version of mriscoc that I've mentioned without further altering Marlin?

Bob Ortiz
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No, it is not interchangeable without changing the configuration of the firmware. These sensors do not require you to set the BLTOUCH directive, so this must be in your configuration:

//#define BLTOUCH

For the CR Touch this directive is required.

#define BLTOUCH

I am building the Tiny Touch an even smaller version of the BFPTouch, in fact it is a derivative! In the last link you find instructions to configure the probe, which redirects to the setup of the BFPTOUCH.

0scar
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  • Looks indeed even better. Is the Tiny Touch interchangeable with BLTouch? I'm asking because I rather stick with the standard BTLUBL releases of the mriscoc firmware than to make custom configs if not needed. – Bob Ortiz Jan 15 '24 at 10:35
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    No, the Tiny Touch is also not interchangeable with the BLTouch. – 0scar Jan 15 '24 at 12:13