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Make Ceiling Lights great again

GitHubRepository

State as of 12017-01-01 (he)

Original work by: xro

• 6 Ceiling lights
  • 4 neon lights
  • 2 LED strip neon replacements
• 2 5-wire 230V cables connect the lights to a self-made relay box
• Each ceiling light
  • shares Earth and N
  • has it's separate L
• relay box contains
  • 1x 4-channel opto-isolator relay 5V/230V , switchable with 3.3V IO, pull low to GND to switch
  • 1x 2-channel opto-isolator relay 5V/230V , switchable with 3.3V IO, pull low to GND to switch
• Lasercut-Box with Light-Switches on wall
  • offers 6 2-way up/down switches
  • offers 3 push-buttons
  • --> 15 buttons
  • contains Teensy 3.0 µC (??)
  • contains RF433 transmitter
• Teensy µC
  • reads 15 buttons
  • controls RF433 tx
  • has 6 unused gpio prepared to switch ceiling light directly
  • firmware takes rf433 cmds on /dev/ttyACM0
  • firmware reports buttons and takes gpio-to-set-states on /dev/ttyACM1
  • firmware also switches currently unconnected gpio directly
• Relay-Box is connected to RaspberryPi1's GPIOS running as licht.realraum.at
  • 5V to VDD
  • 3V3 to VCC
  • gpio4, gpio23, gpio18, gpio17, gpio22, gpio21
• RaspberryPi1
  • installed in carton box on shelf above passage
  • powered by USB-Multi-Charger
  • runs golightctrl
    • switches ceiling lights via GPIO
    • which provides Webserver to switch lights
    • reads Buttons from teensy
    • knows ceiling light states from GPIO
    • sends RF433 cmds directly via teensy or sends request to send to arduino on mursat shelf via MQTT

Current Problems

• if raspberryPi1 dies or has problems, light can not be switched
• teensy Firmware logic for gpios LOW == ON needs to be changed
• switching ceiling light power on/off is probably incompatible with planned change of installing ESP8266 based H801 for each light

Project CeilingLight on Steroids

Working on it: xro

Plan is to install 2.5m RGB+CoolWhite and 3m WarmWhite LED Strip in each ceiling light and control them with a ESP8266 based H801 for each light. Thus we can choose colour and white-colour-temp for each light.

Status: All materials bought, awaiting delivery

TODO

1. connect 2.5m RGB-CW and 3m WW LEDs to H801 and test with default firmware
2. put test-setup in ceiling light and check for problems with WIFI reception. Test various installations to improve WIFI reception. e.g. put H801 outside light-metal-casing and under gypsum-ceiling plates or outside light-metal-casing and visible next to light.

3. reflash and write new trusted firmware for H801, so that it can be controlled via MQTT and remembers a default light-setting

   • MQTT commands
   • action/ceilinglight1/light {r:int, g:int, b:int, cw:int, ww:int, ts:int}
   • action/ceilinglight1/defaultlight {r:int, g:int, b:int, cw:int, ww:int, ts:int}

4. test thoroughly

5. change golightctrl so it can control H801
6. install in ceiling lights

Project Switches as Robust Fallback

Working on it: xro

Status: Concept

TODO

1. connect Relay directly to Teensy µC
2. change firmware to switch LOW for light-on
3. change firmware to have 2 Modes
   • Direct-Mode: µC directly switches ceiling lights on button-presses and reports current state to golightctrl
   • Indirect-Mode: µC only reports button presses, does not directly switch ceiling lights, golightctrl tells µC which ceiling light to switch
4. have firmware automatically switch back to Direct-Mode
   • if ttyACM gets closed
   • golightctrl fails to send SwitchToDirectMode-Cmd after 60s
5. change golightctrl to
   • periodically send SwitchToDirectMode-Cmd
   • switch power of ceiling lights via µC
   • know ceiling light state from µC
   • send MQTT cmd to H801 to switch ceiling light off instead of cutting power (because faster and less weird when switching on again)
   • only cut power to ceiling lights when presence==false or people hit off-switch/webbutton multiple times or H801 MQTT keepalive times out or MQTT msg could not be delivered