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  1. Enrico1

    PCB Etching Tank - Do it yourself

    I've built one too. But since i discovered Hydrogen Peroxide + Muriatic Acid, i just don't use it anymore. You can find (at least here in italy) Hydrogen Peroxide 40% vol from airdressers, it is present in the products they use to make air shiny blonde. I just lay the pcb in the plastic box...
  2. Enrico1

    The correct place to insert a temperature sensor?

    Thank you  ;)
  3. Enrico1

    The correct place to insert a temperature sensor?

    During the process of building my own dual-variable power supply, I decided to mount a cooling fan, controlled by a lm35 temperature sensor, to cool off the heat produced by the numerous of components. Inside my box (old ammo case from WW2) there is very little space: - 2 backlit displays...
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