Configure a Current-Voltage sensor
Hardware connections
JST connector | Connector pin (board) | Description | AttoPilot pin (sensor) |
|---|---|---|---|
 | 1 | GND | GND |
2 | Vcc | Not used | |
3 | Current Input | I | |
4 | Voltage Input | V |
Voltage input
Any sensor can be used as long as the input voltage to Revo's Sensor Port pins does not exceed 3.3V. Higher values can damage board's CPU!
Basic voltage sensor
A basic voltage divider can be used, two resistors connected between ground and + from battery.
For a 4S battery (16.8Volts) the following values can be used:
R1: 2,2KOhms and R2: 10KOhms
With Vbattery = 16.8V, Vout = (16.8 * 2.2) / (10 + 2.2) = 3,03V
Disable TIME alarm
If you use this simple voltage sensor alone, you need to disable the TIME alarm.
This alarm is based on energy consumed that cannot be computed without current sensor.
Go to UavoBrowser > FlightBatterySettings and set the Capacity to 0
Current / Voltage sensor
Here is a list of common sensors that can be used :
Module | Type | Sensitivity | VoltageFactor | CurrentFactor | VoltageZero | CurrentZero | Notes |
|---|---|---|---|---|---|---|---|
Attopilot | 50V/180A | 63.69mV/V, 18.30mV/A | 15.701 | 54.645 | 0 | 0 |
|
Attopilot | 50V/90A | 63.69mV/V 36.60mV/A | 15.701 | 27.322 | 0 | 0 | Same as RCTIMER 90A current sensor |
Attopilot | 13.6V/45A | 242.3mV/V 73.20mV/A | 4.127 | 13.661 | 0 | 0 |
|
Hobbyking | 50V/120A | 97.465 mV/V 31.699mV/A | 10.26 | 31.5467 | 0 | 0 | HK Pilot Power VI Module |
For custom sensor see the Calculate SensorCalibration values section.
Hardware settings
Calibrate sensor
Calculate SensorCalibration values
Setting FlightBatterySettings Properties