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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

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