mbullington · September 27, 2020 19:32 · Sep 27, 2020
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+# Reverse Engineering SP110e LED Controller
+
+Through Bluetooth sniffing, using this method I've been able to (semi reliably) control the SP110e controller via Homebridge.
+
+You can find this controller for very cheap here: https://www.aliexpress.com/item/4000773623427.html?spm=a2g0o.productlist.0.0.4f09329cJ7C1H4&algo_pvid=542e757b-587f-4540-8652-2195883f1349&algo_expid=542e757b-587f-4540-8652-2195883f1349-0&btsid=0bb0622a16012309671478585ed4bd&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
+
+This entire guide is for Bluetooth LE libraries, and uses hexidecimal.
+
+## LE configuration
+
+Service ID can be found with `ffe0`. Under this is two characteristics, `ffe1` and `ffe2`.
+
+**Important:**
+
+Upon connection, you immediately need to write data in this order to prevent the connection from closing.
+
+I'm not honestly sure why.
+
+`ffe2`: `01 00`
+`ffe1`: `01 b7 e3 d5`
+
+## Controlling after Connected
+
+All of these commands should be written to the `ffe1` characteristics.
+
+`VV`, `RR`, `GG`, and `BB` in this case are hex strings between 0-255.
+
+**Turn on:**
+
+`fa 0e c7 aa`
+
+**Turn off**:
+
+`b0 4f c2 ab`
+
+**Change color**:
+
+`RR GG BB 1e`
+
+**Control brightness:**
+
+`VV ed 29 2a`
+
+**Change to preset:**:
+
+`VV 09 fa 2c`
+
+**Change speed of preset:**:
+
+`VV 10 34 03`
+