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Monday, October 3, 2016

Under & overvoltage relay for AC main power supply (2)

original article in roumanian language
   After I test the Measuring AC Voltage with an AC to AC power adapter from OpenEnergyMonitor and put my result on article Measuring AC Main Supply Voltage with Arduino (2) and after I made Under & overvoltage relay for AC main power supply now I change schematic for made a new version for voltage protection relay using this schematic
   If I use main_supply_emonlib_under_overvoltage_ver3.ino sketch after module is powered, on display I see the voltage on main power supply:
and after I push MENU/OK button, on display is undervoltage thereshold, who cand change with + & - buttons:
    After I push MENU button, value is stored in EEPROM memory, on display is overvoltage thereshold, who can be change by + & - buttons:
after push again MENU button, value is stored in EEPROM memory, on display is delay-off tine in second for reconnect coil relay after voltage inoutside range:
   In under & overvoltage relay with Arduino (2) movie you cand see the cases and how you cand cheange value for undervoltage, overvoltage and delay-off time:
   If I use main_supply_emonlib_under_overvoltage_ver3c.ino value for main power supply is displayed with a number after comma (point), exactly as in under & overvoltage relay with Arduino (3) movie:

31.07.2020
   I added a sketch to use LCD1602 alphanumerica display on i2c connexion instead existing display (with MAX7219 and 7-segment led display). Sketch is main_supply_emonlib_under_overvoltage_ver4.ino !

02.08.2020
   I added a new sketch with best implement of delay-on to connect the relay... see main_supply_emonlib_under_overvoltage_ver4a.ino
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Location: Craiova, România

15 comments:

  1. crtmuhJuly 31, 2020 at 10:14 AM

    Hello sir
    What to change when using led matrix 7219
    Because I cannot find 7 segment 7219

    ReplyDelete
    Replies
    1. niq_roJuly 31, 2020 at 10:21 AM

      is too complicated... is more easy with alphanumwrical display (LCD1602)

      Delete
    2. niq_roJuly 31, 2020 at 10:26 AM

      with LCD1602 I can change the sketch without rebuild the project...

      Delete
  2. crtmuhJuly 31, 2020 at 11:27 AM

    Ok can you send me the sketch then if you add waiting when power off then suddenly on
    With my pleasure

    ReplyDelete
    Replies
    1. niq_roJuly 31, 2020 at 12:22 PM

      I'm very busy.. I'll try to change the sketch this weekend...

      Delete
  3. crtmuhJuly 31, 2020 at 1:20 PM

    Ok
    Take your time

    ReplyDelete
    Replies
    1. niq_roJuly 31, 2020 at 2:44 PM

      I added sketch for LCd1602 on i2c connexion: https://github.com/tehniq3/main-supply-voltmeter2/blob/master/main_supply_emonlib_under_overvoltage_ver4.ino

      Delete
  4. crtmuhAugust 1, 2020 at 12:46 PM

    BRIGHT & HELPFUL

    ReplyDelete
    Replies
    1. niq_roAugust 1, 2020 at 2:15 PM

      please, send me few photos.with you device...

      Delete
  5. crtmuhAugust 1, 2020 at 10:25 PM

    (lcd wasnot declared in this scope )
    cannot save sketch

    ReplyDelete
    Replies
    1. niq_roAugust 1, 2020 at 10:35 PM

      you must use library named in sketch... is link to download.. please check

      Delete
    2. niq_roAugust 1, 2020 at 10:45 PM

      I want to read the sketch... I changed few lines.. pmease read and unerstand what I made.. not send me replay with "not work"

      Delete
  6. crtmuhAugust 1, 2020 at 10:49 PM

    Sorry sir

    ReplyDelete
  7. niq_roAugust 2, 2020 at 11:36 AM

    library for LCD1602 on i2c is at https://github.com/tehniq3/used_library: https://github.com/tehniq3/used_library/tree/master/LiquidCrystal_I2C

    ReplyDelete
  8. niq_roAugust 2, 2020 at 11:37 AM

    I added a new sketch with best solution for delay-on for relay if voltage is ok: https://github.com/tehniq3/main-supply-voltmeter2/blob/master/main_supply_emonlib_under_overvoltage_ver4a.ino

    please test and send me a feedback...

    ReplyDelete

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