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  1. P

    Switching from 6 to 3 apa106 leds - issues

    Hi Everyone! I have reached a point of semi-desperation with a project on which I am working for over a year now. There is one issue I doesn't seem to be able to fix. I have a nixie clock pcb which drives 6 apa106 rgb leds. I am trying to wire it up to be able to turn off three of these leds...
  2. hesam_m

    Please share your experience on noise reduction in mixed signal circuits

    Hi, Please share your opinion on noise reduction techniques in mixed-signal circuits, PCBs. your experience, tips .. etc
  3. A

    How to activate 12V/2A electromagnet with 5V (USB power) each 60 minutes?

    Hi all, I feel like I am stuck because don't know how to solve following "simple" solution: Somehow I have to (each 60 min) activate 12V/2A electromagnet, with 5V input voltage (tipical PC USB (5V/100mA). 5V is powering microcontroller, and with that microcontroller, each 60 min I have to...

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