about current measurement

[Kaito]

Hello, I am trying to measure the current consumption. i could cut the SB9. and i use analog discovery and measured!! the picture is shown in below.

gyazo.com/b9f5607148cd9415ea7d1ee6ac644373

This is a picture when I took current consumption. Since 10 Ω of resistance is sandwiched, 10 mv is considered 1 mA.

Is ① advertisement in the photo ? Also, Can the current consumption of ③ be dropped? Also, the total current consumption is very high, why? Now I am using ble_app_uart of sdk 14.0.0. thank you in advanced!!

[Bjørn Kvaale]

Are you using an nrf52832? The #1 on your current consumption graph is most likely advertising (see this tutorial). If you want to lower the current consumption, you can either Google it, check this link, or check out this fantastic tutorial.

[Kaito]

thank you for your reply! I see!! i see your answer's link and tutorials. best regards!!

[Bjørn Kvaale]

No worries.

[Kaito]

Excuse me. I was able to measure 700 μA current only once. However, now measurement is unstable with 2 mA, 3 mA afterwards. What is the cause of this?

gyazo.com/a3d04e42b6ac2e3318619f69fc9e04ab gyazo.com/d24135758fbf6b1ce83431df7a32e606

I have taken part of current measurement and soldered it. thank you in advanced.

[Bjørn Kvaale]

What do you mean by "I have taken part of current measurement and soldered it"? Did you solder the SB9 bridge again?