Skr-mini klipper instructions added.

misc/skr-mini/installation.md

@@ -1 +1,27 @@
+# Klipper Firmware
+
+## Firmware Precompiled by BIGTREETECH
+- [firmware-USB.bin](./firmware-USB.bin). Connect the SKR-Mini to the Raspberry Pi via USB connection.
+- [firmware-USART2.bin](./firmware-USART2.bin). Use TFT port USART2 to communicate with raspberry pi. Connect the UART-TX of raspberry pi with the USART-RX2 of motherboard and connect the UART-RX of raspberry pi with the USART-TX2 of motherboard directly to communicate normally.
+
+Alternatively, find instructions on how to build the firmware yourself [here](https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/tree/master/firmware/V3.0/Klipper#build-firmware-image).
+
+## Flash Firmware
+
+1. Rename `firmware-USB.bin` or `firmware-USART2.bin` to `firmware.bin`.
+Important: If the file is not renamed, the bootloader will not be updated properly.
+2. Copy `firmware.bin` to the root directory of the microSD card (make sure the card is in FAT32 format).
+3. Power off the SKR-mini-E3-V3.0.
+4. Insert the microSD card.
+5. Power on the SKR-mini-E3-V3.0.
+6. After a few seconds, the SKR-mini-E3-V3.0 should be flashed.
+7. You can confirm that the flash was successful, by running ls /dev/serial/by-id. If the flash was successful, you'll see something like the following:
+<img src="ls-output.png" alt='skr-mini-e3-v3.0 installation instructions'/>
+
+# Electronic Wiring
+
 <img src="skr-mini-e3-v3.0-v1678580296384.png" alt='skr-mini-e3-v3.0 installation instructions'/>
+
+# Sources
+
+- https://github.com/bigtreetech/BIGTREETECH-SKR-mini-E3/tree/master/firmware/V3.0/Klipper#how-to-use-klipper-on-skr-mini-e3-v30