Energy consumption with different components enabled

2017

system + i2c + enabled GSM + passive C920 webcam : 323 mA
system + i2c + enabled GSM + FullHD H.264 stream to file : 487 mA

C920 webcam

Streaming to file using HW encoding takes approx. 160 mA.

2015

system + i2c: 247 mA 
system + i2c + pcrd + unused GSM: 310 mA 
system + i2c + pcrd + stopped GSM: 310 mA 
system + i2c + pcrd + stopped GSM + GPS: 374 mA
system + i2c + pcrd + stopped GSM + GPS + passive webcam: 374 mA
system + i2c + pcrd + stopped GSM + GPS + active webcam: 430-450 mA
system + i2c + pcrd + enabled GSM + GPS + passive webcam: 380 mA
system + i2c + pcrd + GPRS connected GSM + GPS + passive webcam: 380 mA
system + i2c + pcrd + SSH over GSM + GPS + passive webcam: 420 mA
system + i2c + pcrd + GPRS transmitting GSM + GPS + passive webcam: 500 mA
system + i2c + pcrd + SSH over GSM + GPS + active webcam: 540 mA