Author Topic: C1 and C3 in // on WeatherMote  (Read 788 times)

VdesmedT

  • Newbie
  • *
  • Posts: 39
  • Country: be
C1 and C3 in // on WeatherMote
« on: June 04, 2015, 04:26:06 PM »
Hi Felix,

I wonder why you put 10uF in // with a 100pF on VDD of the BMP 180 while the data sheet of the BMP180 only recommend 100pF ? Pretty sure I miss something here  ::)

Thanks,

Valery

Felix

  • Administrator
  • Hero Member
  • *****
  • Posts: 6370
  • Country: us
    • LowPowerLab
Re: C1 and C3 in // on WeatherMote
« Reply #1 on: June 04, 2015, 04:36:23 PM »
It's because caps should be as close to the chips as possible, a 10uF should reduce any ripple comming through the headers to the shield.