Product overview
The Rctimer 3DR APM Pixhawk Voltage & Current Sensor 90A W/T-Plug Kit provides DC voltage and current sensing for flight controller installations, with AIOP and APM identified as applications. Its sensing architecture uses an INA-169 to produce analog voltage output and a precision resistor divider to scale voltage sensing to a 3.3V ADC range. The self powered board measures 15x17mm, defining its physical integration footprint. For APM configuration in Mission Planner, the specified selection is AttoPilot 50V 90A.
The hardware features specify maximum sensing values of 51.8V and 89.4A, while the input is separately specified as 2-6S with a 28V maximum; the BEC rating is 5.3V / 3A. The package includes one voltage and current sensor and one 150mm UART 3Pin cable. The PCB itself is supplied without leads or connectors. Its pads accommodate 12 gauge heavy duty leads, but soldering requires care; smaller gauge leads are easier to attach without creating shorts.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Rctimer 3DR APM Pixhawk Voltage & Current Sensor 90A W/T-Plug Kit |
| Product type | Small DC voltage and current sensing board |
| Measurement output | Voltage and current measurements converted to analog voltage output by the INA-169 |
| Voltage sensing architecture | Precision resistor divider scales voltage sensing to a 3.3V ADC range |
| PCB connection configuration | PCB supplied without leads or connectors |
| Lead accommodation | Pads accommodate 12 gauge heavy duty leadsCare is required during soldering; smaller gauge leads are easier to solder without creating shorts. |
| Flight controller integration | Flight controller applications include AIOP / APM |
| Setup selection | Select AttoPilot 50V 90AAPM setup panel in Mission Planner. |
| Maximum sensing voltage | 51.8V Max |
| Maximum sensing current | 89.4A Max |
| Zero current offset | Very low |
| Analog output scaling | Scaled for 3.3V ADC |
| Power arrangement | Self powered |
| Input | 2-6S (MAX 28V) |
| BEC | 5.3V / 3A |
| Dimensions | 15x17mm |
| Supplied sensor | V & I Sensor x 1Package contents. |
| Supplied cable | UART 3Pin cable 150mm x1Package contents. |
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