Using a IR Probe on a BigTreeTech SKR 1.4 Board

Sometimes the best solutions…require out of the box thinking. Today, I was working on my 3D Printer and I was trying to adjust the IR Probe for use with the Z-Min Endstop probe. After running the M199 Comand ( get Endstop Status), I noticed that it would never trigger, even when the red LED status was on. The problem I was having was, “How come my Z-Endstop IR Probe will not trigger?” Directly from the Mini height Sensor board documentation, it mentions:

So…it says something about installing a pullup resistor. As you have to wait a week for shipping and you can’t purchase it from RadioShack as they went bankrupt back in the day, One solution that was posed was to change the pin-out to a port that i would likely never use. In this case i will simply change out the pins to a port in which does not have the 10K resistor installed…

and mainly change the Pins in my pins_BTT_SKR_V1_4.h file to use P1_25 instead of the original port of P1_27 in the documentation. That of course means i have to plug it into a different port…but it beats soldering!

Re-compiled the Firmware….and Presto!

As the Z-Endstop State was Triggered instead of being open, i have to just invert my Z-Endstop Logic State:

How do i find the Certificate Chain on a Third Party, Private GoDaddy SSL Certificate?

The problem i was having today was…What the hell is a Certificate Chain? As i just touched AWS Certificate Manager Today…i want to provide one solution to importing SSL Certificates into AWS Certificate Manager.

  1. Go to AWS Certificate Manager and click on Provision Certificates

2. Click on the blue heading on the top – Import a Certificate

3. Here is the question of the day – how do i fill it out?

Certificate Body – The contents of the .crt file, .pem file, or the contents between BEGIN CERTIFICATE and END CERTIFICATE. Note this may not the be the original BEGIN CERTIFICATE…END CERTIFICATE in your original request.

Certificate Private KEY – The Private Key corresponding to your Certificate. The vendor will not provide this to you; its something you saved already, right?

Certificate Chain – Since we got our Cert from GoDaddy, I looked up the keyword ‘GoDaddy Certificate Chain’ and Go this wonderful page: https://ssl-ccp.godaddy.com/repository?origin=CALLISTO

If you open the .crt file – you will notice it mentions Starfield Certificate Authority – G2. In this case, we will use the Starfield Certificate Bundle – G2 and Copy and Paste the Contents of that .crt file into our Certificate Chain Area