Share My Creation JG USB powered steampunk clock

Discussion in 'Share Your Creations' started by freedom2000, Aug 5, 2018.

  1. freedom2000

    freedom2000 Well-Known Member Licensed User

    JG_IV18_clock2.jpg

    Hi,

    Here is my latest creation, yet another clock !

    This one is based on a IV18 VFD tube. You can find a lot of models on ebay.
    This one is a derivation of these !

    It is powered by a simple USB charger or any laptop USB plug. Then a boost converter increases the 5V up to 30V. And an ESP32 does the tricky multiplex of all the digits via an HV5812 driver.

    A B4A App is used to pilot the ESP32 with Bluetooth Low Energy.

    The design is rather compact.
    JG_IV18_clock.jpg

    And the schematics minimalistic !
    schematics.jpg
     
    Last edited: Aug 5, 2018
    Erel, moster67, scsjc and 5 others like this.
  2. hookshy

    hookshy Well-Known Member Licensed User

    Nice to create stuffs with b4a
     
    freedom2000 likes this.
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