Current measuring unit BIT-CAN-50/200 VFMP.411251.001

Buy a precision measuring unit BIT-CAN-50/200 VFMP.411251.001 for your drone!

Get complete control over your drone's power consumption. The current measuring unit BIT-CAN-50/200 is a high-precision device. It is designed to monitor power plant parameters. The device measures battery voltage and current consumption. Data is transmitted to the flight controller via the DroneCAN protocol. You will be able to accurately calculate the remaining flight time. Choose professional telemetry for critical missions. Order BIT-CAN-50/200 for your project right now.

• Wide current measurement range up to 204.8 A with shunt.

• High voltage measurement accuracy ±0.1 percent.

• Support for modern DroneCAN protocol for flight controllers.

• The compact dimensions of the board are only 30x22 mm and weighs 4.3 grams.

• Wide operating temperature range from -40 to +85 °C.

Operating principle and purpose of the device

The BIT-CAN-50/200 measuring unit performs the function of an on-board telemetry sensor. It is connected between the battery and the power load. The device measures the voltage drop across an external shunt. From this drop the current flow is calculated. At the same time, the current battery voltage is measured. The received data is digitized and processed by a microcontroller.

The information is transmitted via the CAN bus to the flight controller. The standard DroneCAN (formerly UAVCAN) protocol is used. This allows the sensor to be easily integrated into any modern system. The flight controller receives accurate consumption data. Based on them, the remaining capacity and flight time are calculated.

Technical characteristics and functionality

Study the exact parameters of the BIT-CAN-50/200 measuring unit. The battery voltage measurement input operates from 0 to 85 Volts. The current measurement range is from 0 to 204.8 Amps. Direct current through external shunt up to 150 Amps. Short-term current allowable up to 204.8 Amps.

Voltage measurement accuracy reaches ±0.1 percent. Current measurement accuracy is ±2 percent. For communication, a CAN interface with the DroneCAN protocol is used. There is a backup UART2 for downloading firmware in DFU mode. An ST debug interface is provided with SWCLK and SWDIO pins.

The supply voltage of the board itself is 4.5-5.5 Volts. Current consumption is only 10-25 milliamps. Operating temperature from -40 to +85 degrees Celsius. The board size is 30 by 22 millimeters, 3 mm thick. The weight of the device does not exceed 4.3 grams.

Display and equipment

There are LED status indicators on the board. The blue LED flashes quickly to indicate loading. Slow flashing blue indicates normal operating mode. The red LED indicates the presence of 3.3 Volt power.

The delivery set includes the measuring unit board itself. Also included is a 20 cm long connecting cable. The cable has JST-GH-4P connectors on both sides. This is enough to connect to the flight controller. The shunt is purchased separately depending on the required current.

Technical Parameters

• Battery voltage measurement input: 0…85 V
• Current measurement range: 0…204.8 A
• Shunt current: 150 A (constant), 204.8 A (short-term)
• Voltage accuracy: ±0.1%
• Current accuracy: ± 2%

Interface

• CAN: DroneCAN protocol
• UART2: Reserved, for firmware download (DFU)
• ST Debug Interface: SWCLK and SWDIO
• Light Emitting Diodes (LED):
• Blue, fast: Loading
• Blue, slow: Working mode
• Red: 3.3V presence indicator
• Board supply voltage 4.5…5.5 V (pad/pin 5V)
• Current consumption: 10-25 mA
• Operating temperature: -40…85 °C
• Board size: 30mm × 22mm × 3mm
• Weight: 4.3 g

Equipment

• Measuring unit board BIT-CAN-50/200 1 pc.
• Cable 20 cm JST-GH-4P to JST-GH-4P – 1 pc.