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MIKROE-2755
18 g
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Angle 3 click carries the AK7451, a magnetic rotational angle sensor. The click is designed to run on a 5V power supply. It communicates with the target microcontroller over SPI interface, with additional functionality provided by the INT pin on the mikroBUS™ line.
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Angle 3 click carries the AK7451, a magnetic rotational angle sensor. The click is designed to run on a 5V power supply. It communicates with the target microcontroller over SPI interface, with additional functionality provided by the INT pin on the mikroBUS™ line.
Angle 3 click can be used for non-contact rotation angle measurement.
The AK7451 is a magnetic rotational angle sensor with a built-in Hall element.
By detecting the magnetic field vector parallel to the IC surface, the AK7451 outputs the absolute angular position of the magnet and the relative angular position.
Through the transverse magnetic field detection method, using a magnetic flux concentrator, the AK7451 has excellent axial misalignment immunity.
The host microcontroller sends the request for measuring the angle rotation via the SPI interface. The AK7451 sensor responds with the measured data.
There are 3 output pins on board (A, B, Z) where the IC outputs pulses for the encoder feature and the 3 output pins (U, V, W) where the IC outputs pulses for the BLDC motor drive.
Type
Magnetic
Applications
Suitable to various motor drive and encoder applications
On-board modules
AK7451 zero latency angle sensor
Key Features
12bit angle resolution, less than ±0.6 deg. angle accuracy at 25 ºC, maximum tracking speed : 333 rps (20,000 rpm)
Interface
SPI
Feature
No ClickID
Compatibility
mikroBUS™
Click board size
M (42.9 x 25.4 mm)
Input Voltage
5V
This table shows how the pinout on Angle 3 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
Code examples for Angle 3 click, written for MikroElektronika hardware and compilers are available on Libstock.
This code demonstrates the usage of the Angle 3 click driver on an STM ARM board. After the initialization, data from the click is being read, converted, and displayed via UART, in a loop.
01 // Main function. 02 void main() 03 { 04 uint16_t angleData; // Angle data read from Angle3. 05 uint16_t angleDataDegrees; // Angle data converted to degrees. 06 uint8_t buffer[20]; // Buffer for characters to send via UART. 07 08 // Initialize the system. 09 systemInit(); 10 11 // First write to UART. 12 UART1_Write_Text("Start"); 13 UART1_Write(13); 14 UART1_Write(10); 15 16 // Main loop. 17 while( 1 ) 18 { 19 // Some delay. 20 Delay_ms(1000); 21 22 // Read angle data and convert. 23 angleData = ANGLE3_readAngleData(); 24 25 // Check the error bit. 26 if ((angleData & _ANGLE3_ERR_BITMASK) == 0) 27 { 28 // Send error message via UART. 29 UART1_Write_Text(" error"); 30 31 // Continue with next loop iteration. 32 continue; 33 } 34 35 // Convert angle data to degrees. 36 angleData &= 0x0FFF; // Actual data is in the lower 12 bits. 37 angleDataDegrees = ANGLE3_calculateDegrees(angleData); 38 39 // Send angle data via UART. 40 IntToStr(angleDataDegrees, buffer); 41 UART1_Write_Text(buffer); 42 } 43 }
NOTE: Please be advised that any peripheral devices or accessories shown connected to the Click board™ are not included in the package. Check their availability in our shop or in the YMAN section below.