February 4, 2015

Unisense-E

I got the telemetry sensor for the Trifecta the other day. This time I wanted to try out the Unisense-E instead of the usual e-fuelgauge that I have gotten used to. The main advantage of the Unisense-E is that it contains a vario. The vario is a air pressure sensor that reports relative altitude and rate of ascent/descent. Additionally, the sensor measures motor RPM using a connector to one of the motor leads.

Unisense-E
Sensor with CC3D and Receiver for comparison


The device is very small considering the three built-in capabilities and the additional programming connector. However, it is offered with a few connector options, which makes it clumsier. Optionally you can get it with a hefty 4mm² wire which is only necessary for really high current installations.

I'm going to pull some 25A through it so I had to take it apart to replace the wires with lighter ones that are easier to fit inside a small air frame. Here's what's under the hood.

Unisense-E
Unisense-E the shunt resister sensor and signal connector


Unisense-E
Unisense-E processor and configuration port connector

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