This is an old revision of the document!

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 not as quick or nice-to-look-at as having planned ESP8266 based H801 do it

Project CeilingLight on Steroids

Working on it: xro

Plan is to replace all the power-sucking neon-ceiling-lights with LED strip lights. Furthermore white-light color-temperature should be adjustable. For party and effect purposes the ceiling lights should be dialable to any colour. To accomplish this, 2 LED strips will be installed in each ceiling light. 2.5m RGB+CoolWhite and 3m WarmWhite LED Strip for each light. They will be controled with a ESP8266 based H801 for each light. Thus we can choose colour and white-colour-temp for each light.

ThePlan

Status: All materials bought, H801 deilvered, awaiting delivery of LEDs and power supplies

TODO

  1. (done) verify H801 can be flashed with Sming firmware
  2. (skipped) connect 2.5m RGB-CW and 3m WW LEDs to H801 and test with default firmware
  3. (done) Measure power consumption of LED-Driver
    • power consumption in soft-off (H801 stays powered): ~0.36W
    • power consumption in all-on: 62.4W
    • 10m ColdWhite, max duty: 29.1W
    • 10m Blue, max duty: 28.7W
    • 10m Red, max duty: 35.6W
    • 10m Green, max duty: 25W
    • 10m RGB, max duty: 59.8W
    • 10m RGB+CW, max duty, 5m each on a 74W Powersupply: 66.6W (Netzteile am Anschlag)
    • 10m WarmWhite, max duty, 5m each on a74W Powersupply: 61.4W (Netzteile am Anschlag)
    • 10m RGB+CW+WW, Strip1+2,max duty, 5m each on a 74W Powersupply: 124W (Netzteile am Anschlag)
    • 5m RGB on Powersupply1 + 5m CW on Powersupply2: 74W
    • 5m RGB on Powersupply1 (74W) + 5m CW+WW on Powersupply2 (74W): 44.4W
    • 5m RG+WW on Powersupply1 (74W) + 5m B+CW on Powersupply2 (74W): 76W
    • --> RGB+CW Strip1 pro Meter: max(44.4/5,66.6/10)=max(8.88,6.66) = 8.88W/m
    • --> WW Strip2 pro Meter: 61.4W/10 = 6.1W/m
    • RGB+CW Strip1 60LED/m laut Verkäufer: 11.52W/m
    • WW Strip2 60LED/m laut Verkäufer: 14.4w/m
  4. (done)test WIFI reception of H801 in ceiling light without installing it permanently. Test various possibly installation locations 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.
    • tested in Leinwand/Mitgliederregal Ceiling Light, which is known to have worst WiFi reception from years ago TP-link Test.
      Works Flawlessly :)

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

    • see HackADay-Artikle
    • see OpenSource Firmware for H801
    • see esp8266 Forum
    • see Protocol Documentation
    • see Ready Made MQTT Firmware
    • (check) use Sming
    • (check) use Sming new PWM Lib with compile flag
    • (done) on power-on default-light setting is used
    • (done) MQTT commands
      • action/ceilingN/light {"r":int, "g":int, "b":int, "cw":int, "ww":int} | N={1..6,All}, int={0..1000}
      • optional: "flash":True or "flash":{"repetitions":x, "cc":[topic2, topic3, ...]}
      • optional: "fade":True or "fade":{"duration":ms, "cc":[topic2, topic3, ...]}
      • specifiyng cc will forward the json message to the next topic in the list after the effect has finished or was interrupted
      • action/ceilingN/defaultlight {"r":int, "g":int, "b":int, "cw":int, "ww":int} | N={1..6,All}, int={0..1000}
    • (done) provide backup interface. e.g. telnet
    • secure backup telnet interface

  6. test in dry state

    • startup behaviour: PWM pins start in INPUT direction, all channels except R- light up for 700ms \ --> prefer solution where H801 soft-disables the LEDs and itself stays powered versus being powered on/off constantly
    • startup behaviour: configured default light state apply's really fast after about y1.4s (not after blinking due to INPUT direction though)
    • WIFI connection (with DHCP) works really fast. takes about <=6s
    • MQTT works really well
    • Telnet configuration works really well
    • spiffs flash-time pre-configuration works really well
  7. test in indirect ceiling illumination configuration
    • Strip1 (RGB+CW) width: 12mm
    • Strip2 (WW) width: 9.5mm
  8. (done) test in ceiling light enclosure
    • WIFI works really well, surprisingly no problem
  9. (done) Testinstall one in ceiling light
    • installed in middle-membeshelp light. Splice power from Lasercutter CeilingLight
    • 3m Warm White (6 individul strips)
    • 2.5m RGB+Coldwhite (6 individual strips)
    • Things learned
    • prefer splice WarmWhite from VCC, not from V+ where it passes the PCB
    • vor-Auflegen funktioniert nicht gut -> aufzeichnen
    • use 12mm 5pin clip-connectors for 12mm wide 5pin RGBW Led strip (not 10mm) -> ordered 12mm
    • some connector cables are too short -> need to be extended --> ordered longer ones
    • use extra double sided tape at ends
    • cut closer to 55cm than 60cm, keep away from edges light wise
    • keep switching power supplies away from WiFi H801
    • WarmWhite Strip needs to split. Looses brightness after 1.5m -> T-Connectors ordered
    • arrange power supply in corner of edges, where they don't cast shadow if possible
    • arrange H801 in center when possible
  10. change golightctrl so it can control H801
  11. install in ceiling lights
  12. put CW-LEDs currently in one ceiling lights into MaSha
    WW-LEDs in all Ceiling lights as Simple-Light
    RGB+CW+WW-Fancy-Lights int all Ceiling lights

Project Switches as Robust Fallback

Plan: connect Relay directly to Teensy µC

Working on it: xro

Status: Concept

TODO

  1. change teensy firmware to switch LOW for light-on
  2. ensure H801 firmware acts transparent. Power on -> Light, Power off -> no light
  3. always cut power if physical switches are used
  4. change golightctrl to
    • send soft-off to H801 if web-buttons are sued
    • cut power via relay if physical buttons are used
    • cut power if presence=false
  5. connect Relay directly to Teensy µC
realraum Graz, Brockmanngasse 15, 8010 Graz, realraum - Verein für Technik in Kultur und Gesellschaft
  • /var/lib/dokuwiki/data/attic/roomauto/deckenlichter.md.1484603544.txt.gz
  • Last modified: 2017-01-16 22:52
  • by xro