diff --git a/README.md b/README.md
index 356b090..395fef5 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,21 @@
-# v5_field_control
+# Setup
+Connect ESP32 TX2 & RX2 to DI & RO of the Max485.
 
+Connect ESP32 D23(or whatever read_line is set to) to RE/DE.
+
+Power Max485 with ESP VIN/GND.
+
+Replace {WIFI_SSID}, {WIFI_PKEY}, {MQTT_HOST}, and {MQTT_PORT} in the code(and SubTopic if you want).
+
+Flash the code onto the ESP32, connect A&B of the smart cable connected to the controller(aka the black and red wires respectively) to the Max485.
+
+Viewing the USB serial of the ESP32, send 0xAB-like hex sequences to update the configured state.
+
+Known States:
+- 0xC9 : paused
+- 0xE1 : driver competition
+- 0xD1 : auton competition
+- 0x61 : driver skills
+- 0x51 : auton skills
+
+All of the protocol reversing has been done with 1 brain & 1 controller, so any unique fields are constant and will need to be updated.
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