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# ESP Wordclock
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## Setup
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### Initial Setup
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Install the firmware on the ESP:
The ESP must be set into the bootloader mode, like [this ](https://www.ccc-mannheim.de/wiki/ESP8266#Boot_Modi )
The firmware can be downloaded with the following script:
< pre >
cd os/
./flash.sh ttyUSB0
< / pre >
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Connect to the ESP via a terminal emulator like screen using a baud rate of 115200. Then format the filesystem and reboot the ESP with the following commands:
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< pre >
file.format()
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node.restart()
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< / pre >
Then disconnect the serial terminal and copy the required files to the microcontroller:
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< pre >
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./tools/initialFlash.sh /dev/ttyUSB0
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< / pre >
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### Upgrade
Determine the IP address of your clock and execute the following script:
< pre >
./tools/remoteFlash.sh IP-Address
< / pre >
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## Hardware Setup
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Mandatory:
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* GPIO2 LEDs
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* GPIO0 Bootloader (at start)
* GPIO0 factory reset (long during operation)
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Optinal:
* ADC VT93N2, 48k light resistor
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* GPIO4 DS18B20 Temperatur sensor
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## MQTT Interface
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### Status
* **basetopic**/brightness **Current brightness in percent**
* **basetopic**/background **Current background color**
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* **basetopic**/row1 **Current background color**
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* **basetopic**/temp **Temperatur**
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### Commands
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* **basetopic**/cmd/single
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* ON **Set brightness to 100%**
* OFF **Set brightness to 0%**
* 0-100 **Set brightness to given value**
* #rrggbb **Background color is set to hex representation of red, green and blue**
* 0-255,0-255,0-255 **Background color is set to decimal representation of red, green an blue**
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* **basetopic**/cmd/telnet
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* ignored **Stop MQTT server and start telnetserver at port 23**
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* **basetopic**/cmd/row1
* 0-255,0-255,0-255 **Background color is set to decimal representation of red, green an blue**
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* **basetopic**/cmd/row1
* 0-255,0-255,0-255 **Background color is set to decimal representation of red, green an blue**
* **basetopic**/cmd/row2
* 0-255,0-255,0-255 **Background color is set to decimal representation of red, green an blue**
* **basetopic**/cmd/row3
* 0-255,0-255,0-255 **Background color is set to decimal representation of red, green an blue**
* For all rows...
* **basetopic**/cmd/row10
* 0-255,0-255,0-255 **Background color is set to decimal representation of red, green an blue**
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## OpenHAB2
Tested MQTT with binding-mqtt 2.5.x
### Configuration
```
Thing mqtt:topic:wordclock "Wordclock" (mqtt:broker) @ "MQTT" {
Channels:
Type dimmer : dim "Dimming" [ stateTopic="basetopic/brightness", commandTopic="basetopic/cmd/single" ]
Type string : cmd "Command" [ commandTopic="basetopic/cmd/single" ]
Type switch : active "Active" [ commandTopic="basetopic/cmd/single" ]
Type colorRGB : background "Background" [ stateTopic="basetopic/background", commandTopic="basetopic/cmd/single", on="28,0,0", off="0,0,0" ]
}
```
