remote AIS receiver/repeater - part 7 - current measurements

 Overall power consumption measurements

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Overall system current @ battery voltage (3.7-4.2V). Active=transmitting LoRa, Standby=listening.

dAISy current measured at 3.3V (via output of onboard 3.3v Regulator on Teensy) Active = receiving/parsing. AIS sentence. Standby = listening

Teensy current  @ battery voltage with no peripherals powered up, taken from internet (not yet measured)

HopeRF not measured

	active	standby	sleep
Overall	110mA	95mA	0.2mA
dAISy	77mA	74mA  0
Teensy	~20mA	~20mA	0.2mA
Hoperf			~0mA

Our challenge is to tame the dAISy which is someway off the published spec (<20mA @ 5V i.e.  100mW; we are seeing 74mA @ 3.3v i.e. 250mW)