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    Posts made by adfx

    • RE: Please check my pcb design for 24V LED Dimmer

      I had very often issues with programming bare chips if any other connection is on MOSI/MISO or let’s say on the SPI. I would suggest to check your chips on a breadboard on load the boot loader before using them in a circuit. In your case it looks like you connected your 2.4g Radio as well to the ISP which in my cases always interfered with programming. I solved that by using jumpers to isolate the AVR when programming. Hope this helps preventing you from throwing away chips which might work...

      Good luck

      posted in Hardware
      adfx
      adfx
    • RE: INA219 current sensor with PWM Ruideng 3W LED driver

      Without knowing the circuitry I assume that INA's readings interfere with your PWM. As soon as you're in an off-state current for sure is 0mA in an on-state it is like you said160mA.
      You should buffer the readings of your INA with a elec-cap to smooth the voltage over your shunt. But as said this is an assumption. We need your circuit to understand what the cause is.
      Hope that helps.

      posted in Hardware
      adfx
      adfx