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+# 3D Printable split flap display
+This is a 3D printable, expandable split flap display based on the original design of [David Königsmann](https://github.com/davidkingsman/split-flap).
+This version uses his drum and flap design but completly redesigns the electrical system.
+Notable changes:
+* New, more rigid case design.
+* Hot-swappable modules
+* New Backplane
+* New PCB, using mostly smd components and an atmega8 mcu.
+* RS-485 bus
+* Custom leightweight protocol
+* Controller, running an WebSockets-Server.
+* Homing-Failure and overcurrent detection
+* Address and calibration data is stored in EEPROM
+
+The firmware as well as the Server is completly rewritten wrfrom scratch in plain c and can easily be ported to other mcu's.
+
+__Ongoing Project! This repository is not final.__
+
+## Websockets Server
+### Satus request of all devices
+Request:
+```
+{"command":"status"}
+```
+Response:
+```
+{
+  "devices_all":2,
+  "devices":[
+    {
+      "id":0,
+      "address":0,
+      "status":{
+        "voltage":11.6015625,
+        "rotations":4,
+        "power":true,
+        "raw":0,
+        "device":"ONLINE",
+        "flags":{
+          "errorTooBig":false,
+          "noHome":false,
+          "fuseBlown":false,
+          "homeSense":false,
+          "powerDown":false,
+          "failSafe":false,
+          "busy":false
+        }
+      }
+    },
+    {
+      "id":1,
+      "address":1,
+      "status":{
+        "voltage":0.0,
+        "rotations":0,
+        "power":true,
+        "raw":0,
+        "device":"OFFLINE",
+        "flags":{
+          "errorTooBig":false,
+          "noHome":false,
+          "fuseBlown":false,
+          "homeSense":false,
+          "powerDown":false,
+          "failSafe":false,
+          "busy":false
+        }
+      }
+    }
+  ],
+  "devices_online":1
+}
+```
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