Code: Select all
void setup()
{
suspendLoop();
}
void loop() {}
Moderators: adafruit_support_bill, adafruit
Code: Select all
void setup()
{
suspendLoop();
}
void loop() {}
The nRF52832 itself does not feature a USB port. The PCB contains a component that acts as a USB port on one side and provides a serial port on the other side. That serial port is connected to the nRF52832. This component is known as a CP2104 (in my previous post I mentioned the CP2102, but it actually is a CP2104). When in operational mode, the CP2104 can consume up to 18.5 mA (!).casouri wrote:Yes, nrf52832. I enabled dcdc and it seems to save me 1mA, thanks. Are you saying that if I measure the power consumption through the micro usb port, the port itself consumes some amount of current?
I see that the normal operating current is 17-18mA for this chip, and the non-operating current is 100-200uA. Is it safe to assume that when the usb port is not plugged in, the feather board consumes ~1mA? Is there any way to confirm this without any expensive equipment?When in operational mode, the CP2104 can consume up to 18.5 mA (!).
The usb power meter I use is this one https://www.makerhawk.com/products/make ... ester-at34 I'm content with anything in the proximity of 1mA, hopefully the resolution of this usb power meter isn't too bad...Further more, you mention the use of a "USB power meter". These things usually are not the most accurate at low currents (if at all). Do you have more information on that device? Exact type for example?