• Siren test

    Wim Van Gool12/05/2021 at 09:39 0 comments

    If you're wondering what a 555 based siren sounds like...

  • Increased complexity

    Wim Van Gool12/05/2021 at 09:30 0 comments

     I've updated the design of the the board so it can be used for different skill levels.

    • We can get the boards fully SMD assembled, so you only have to mechanically assembly the kit
    • a version with just the non-rechargeable CR2032 battery, a switch and 6 SMD blinking LEDs,
    • a variant which adds the 555 timer circuit and buzzer to mimic a siren
    • add a USB C connector and LDO so you no longer need a battery
    • add a LIR2032 battery with charger and protection circuitry for a rechargeable solder kit