Common Sense RC Servo Gauge

The Servo Gauge is an inflight current logger for your radio gear. You can use it to assist diagnose servo or BEC issues in your system. It can also help you identify what type of changing BEC you need for your system, or if you need one at all.

Servo Gauge is designed to be owned from a receiver battery or a BEC and measures the following:

Max current that occurs throughout flight (As much as 5A)
Max average current throughout any 15 second interval (As much as 5A)
Typical current over whole flight (As much as 5A)

Max current will tell you if you're risking a BEC shutdown due to overcurrent.
Max over 15 seconds will tell you if your BEC is most likely to overheat and shut down.
Average current will tell you what does it cost? of the capability of the battery powering the receiver is being used.

The Servo Gauge sets up inline between your receiver and ESC. It shows the recorded details by blinking LEDs, then you can refer to the chart to go from number of blinks to number of amps.

The red LED blinks out the maximum current recorded throughout the flight in .1A increments. That is, 12 flashes implies a max current of 1.2A.

The green LED blinks out the average current in .05A increments. 5 flashes would mean the average current drawn throughout the flight was .25A

The "Max 15" reading shows the greatest average drawn by the system over any 15 second duration, and it is shown by both lights blinking at the same time. It shows in .05A increments. For instance, if they both flash 12 times, then 0.6A was drawn for 15 seconds, which implies you must look into updating to a changing BEC if you run 3s or higher packs.

Servo Gauge will work with receiver loads from 3.5V to 15V, as well as 5V or 6V BECs.