Technical specification:

    • Step down DC/DC regulator/limiter based on Arduino controller
    • Input power: +5V DC / 35 [A]
    • Output power: +5V DC / 500 [mA] / 1 [A] / 1.5 [A]
    • LCD 16x2 display integration - included in front panel
    • Keypad integration (switch debounce included - Low pass filter) - included in front panel
    • RS232 interface PC integration/communication - included in back panel
    • Electronic buzzer - sound power switch off indicator - included inside of DC/DC box package
    • PC Windows application - RS232 integration/communication
      - presentation of measured values
      - current consumption graph



Future development:

    • Active FAN cooling (optional) - included in back panel
    • PC application development for RS232 integration/communication
      - configuration of current consumption limits (read/write operation)
      - measured values recording
    • English video clips

Related publications:

    • Arduino DIY - Limiter 500mA strujno ograničenje uz shutdown opciju - I deo
    • Arduino DIY - Limiter 500mA strujno ograničenje uz shutdown opciju - II deo
    • Arduino DIY - Limiter 500mA strujno ograničenje uz shutdown opciju - III deo
    • Arduino DIY - Limiter 500mA strujno ograničenje uz shutdown opciju - IV deo

Video clips:

    • DC/DC limiter - Prototype construction - Serbian video clip #1
    • DC/DC limiter - Assembled prototype demo/presentation - Serbian video clip #2
    • DC/DC limiter - Final project demo/presentation - Serbian video clip #3

DC/DC Regulator - Revision #2 Introduction - English version video:


DC/DC Regulator - Windows application prototype for DC current consumption measurements over RS232 serial communication - English version video #2:


DC/DC Regulator - Windows application prototype for DC current consumption measurements over RS232 serial communication - English version video:


DC/DC regulator - RS232 communication with PC - English version video:


DC/DC regulator - limiter example, mobile phone charger - English version video:


Front panel prototype - Comparison between DC / DC ampermeter and digital multimeter ampermeter - English version video:


DC/DC regulator - different levels of current limits - switch between limits by using keypad - English version video:




Related videos (Serbian) about DC/DC regulators, including Personal Computer theory and practice:

    • [Serbian] Limitiranje potrošnje električne struje na vodu za napajanje - Deo #1 (Video post 2019)
    • [Serbian] Limitiranje potrošnje električne struje na vodu za napajanje - Deo #2 (Video post 2019)
    • [Serbian] Limitiranje potrošnje električne struje na vodu za napajanje - Deo #3 (Video post 2019)
    • [Serbian] Limitiranje potrošnje električne struje na vodu za napajanje - Deo #4 (Video post 2019)
    • [Serbian] Limitiranje potrošnje električne struje na vodu za napajanje - Zaštita od obrnutog polariteta AC/DC napajanja sa limitiranjem nivoa ulaznog napona na dozvoljeni maksimum #1 - Deo #5.1 (Video post 2019)
    • [Serbian] Limitiranje potrošnje električne struje na vodu za napajanje - Zaštita od obrnutog polariteta AC/DC napajanja sa limitiranjem nivoa ulaznog napona na dozvoljeni maksimum #2 - Deo #5.2 (Video post 2019)

Photos taken during development:



Photos taken during COG LCD 2x16 and keypad (switch debounce included) development: