WiFi power usage.
Pyboard D SF2W with USB cable, REPL idle, MicroPython v1.10-445-ga9b1d3ca3 on 2019-05-29, USB at 5.08V :
- WiFi AP active, no connections, increases the electric current 43-46 mA. Notice after "ap.active(False)" the electric current doesn't come back to the values before WiFi AP activation, so there is a 3.3 mA increase :
* @ 216 MHz : 90-93 mA, rare peaks up to 106 mA. Down to 50.4 mA after "ap.active(False)";
* @ 120 MHz (default) : 67-69 mA, rare peaks up to 91 mA. Down to 28.1 mA after "ap.active(False)", only with hard reset it comes back 24-25 mA @ 120 MHz;
* @ 48 MHz (minimum to have WiFi working) : 57-59 mA, rare peaks up to 76 mA. Down to 17.1 mA after "ap.active(False)".
- WiFi STA, no network traffic, increases the electric current 4-9 (sometimes 39) mA. Notice after "sta.disconnect()" the electric current doesn't come back to the values before WiFi STA activation, so there is a 3.3 mA increase :
* @ 216 MHz (default) : 54-56 mA (but sometimes 86 mA, after reconnecting, etc), peak of 95 mA during < 1s after being active/connected. Down to 50 mA after "sta.disconnect()";
* @ 120 MHz (default) : 29-33 mA (but sometimes 64 mA, after reconnecting, etc), peak of 80 mA during < 1s after being active/connected. Down to 28 mA after "sta.disconnect()";
* @ 48 MHz (default) : 18-19 mA (but sometimes 52 mA, after reconnecting, etc), peak of 65 mA during < 1s after being active/connected. Down to 17 mA after "sta.disconnect()".
USB current measurements with
UM25C.