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{tag>project}

Ceiling lights control

GitHubRepository

State as of 12017-01-01 (he)

• 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

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.

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

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