Comment on Biqu B1 SKR V1.4 mainboard to SKR MINI E3 V3?
UncleStewart@sh.itjust.works 2 months agoSuspected that the SKR v1.4 original motherboard died (Hotend not heating), so advanced to the SKR MINI v3 + a Raspberry PI for Klipper.
I’m looking for “printer.cfg” that matches this setup…
B0rax@feddit.org 2 months ago
The printer.cfg is highly dependent on your setup. For reference you can look at the example config for the SKR mini e3 v3: github.com/…/generic-bigtreetech-skr-mini-e3-v3.0…
UncleStewart@sh.itjust.works 2 months ago
Thanks. I’ve already used this one.
In the config file, some pins are named like “PB0”, but other have a “!” in front, like “!PB1”, and other a “^”, like “^PC2”. What are the “!” and “^” for?
What’s the difference between a “PB0” and a “PC11”.
B0rax@feddit.org 2 months ago
An exclamation mark (!) inverts a pin. The other symbol (^) enables a pull up resistor on a pin, which is needed for things like endstops or buttons. These can also be combined.
PB0 is just the name of one pin. PC0 would be a completely different pin.
Different Microcontrollers have different naming conventions, that is why you sometimes see names like PB10 and on other controllers it might be GPIO10.
UncleStewart@sh.itjust.works 2 months ago
Thank you! This helped a lot.
Now, in the pinout for my old SKR v1.4 FAN0 is
“12/24v” and “2.3”, while FAN1 is“GND” and “12/24v”.What are the difference between FAN0 and FAN1 port on the motherboard?
(I’ve had a working 3D printer for 6 days, and have no experience with anything 3D printing related, so therefore these noob questions. )