Create CANBUS_Communication_Setup.md

Author: traviscea

CANBUS_Communication_Setup.md

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+# Adding MCP2515 to Arduino to access CANBUS. #
+This effectively makes the Arduino a CANBUS node
+
+The specific INO file for HALTECHs or other standalones which is in the project will need to be uploaded to the Arduino via Arduino IDE
+
+## Part needed: ##
+https://a.co/d/fVGMQm0
+
+## Connections ##
+
+MCP215 to Arduino Mega
+
+| MCP2515 Pin   | Arduino Mega Pin | Why                                 |
+| ------------- | ---------------- | ----------------------------------- |
+| **VCC**       | **5V**           | Power (most of these boards are 5V) |
+| **GND**       | **GND**          | Ground                              |
+| **CS**        | **53**           | SPI Chip Select (Mega hardware SS)  |
+| **SO (MISO)** | **50**           | SPI MISO                            |
+| **SI (MOSI)** | **51**           | SPI MOSI                            |
+| **SCK**       | **52**           | SPI Clock                           |
+| **INT**       | **2**            | Interrupt from MCP2515              |
+
+
+
+MCP2515 -> Haltech CAN
+
+| MCP2515 Terminal | Haltech  |
+| ---------------- | -------- |
+| **CANH**         | CAN High |
+| **CANL**         | CAN Low  |
+