MIKROE-2553

LEM click PID: MIKROE-2553 Weight: 38 g LEM click carries the LTS 6-NP current transducer and MCP3201 ADC converter. The click can measure AC and DC current with exceptional speed, up to 200 KHz. LEM click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over SPI interface, or directly with analog output. ON! DO NOT TOUCH THE BOARD WHILE THE EXTERNAL POWER SUPPLY IS Note: LEM click has exposed pins/pads. To stay safe take precaution when applying high voltage to the click. The click is to be used by trained personnel only when applying high voltage. LTS 6-NP features LTS 6-NP is a closed loop (compensated) multi-range current transducer using the Hall effect. Intended for electronic measurement of currents: DC, AC, pulsed, mixed with galvanic separation between the primary circuit and the secondary circuit. How it works The conductor can be placed through the hole on the sensor: There is on board ADC to read out the analog output value of the sensor, or it can be read from the AN pin. MCP3201 A/D converter The MCP3201 is a 12-bit Analog-to-Digital (A/D) Converter with on-board sample and hold circuitry. The device provides a single pseudo-differential input. The MCP3201 is capable of sample rates of up to 100 ksps at a clock rate of 1.6 MHz. Key features • LTS 6-NP current transducer o Unipolar voltage supply o Incorporated measuring resistance o Low temperature drift o Optimized response time • MCP3201 ADC converter • SPI interface • 3.3V or 5V power supply Specification Type Measurements Applications LEM click can be used for AC variable drives, Servo motor control, Power supplies, etc. On-board modules LTS 6-NP current transducer, MCP3201 A/D converter Key Benefits The click can measure AC and DC current with exceptional speed, up to 200 KHz. Interface SPI Peripherals include Onboard screw terminal Input Voltage 3.3V or 5V Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Pinout diagram This table shows how the pinout on LEM click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes mikroBUStm Analog output AN 1 AN PWM 16 NC Not connected Not connected NC 2 RST INT 15 NC Not connected Chip select CS 3 CS TX 14 NC Not connected SPI Clock SCK 4 SCK RX 13 NC Not connected MISO 5 MISO SCL 12 NC Not connected Not connected NC 6 MOSI SDA 11 NC Not connected Power supply +3.3V 7 3.3V 5V 10 +5V Power supply GND 8 GND GND 9 GND Ground SPI Master Input Slave Output Ground Jumpers and settings Designator JP1 Default Position Name PWR.SEL. Left Default Option 3V3 Description Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V LEDs and buttons Designator TB1 Name Type Description SCREW TERMINAL Current input to sensor Programming Code examples for LEM click, written for MikroElektronika hardware and compilers are available on Libstock. Code snippet The following code snippet shows the example for LEM click, which calls functions that will initialize both the click and the display, and then show measured data. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 static void systemInit( void ) { LEM_init(); } void main() { float currentRead; char txt[10]; char oldTxt[10]; char lab[10] = {0}; char res; /**< Read value */ /**< Read value as string */ /**< Old read value */ /**< Current label text */ /**< Comparing of old and new value */ systemInit(); displayInit(); while(1) { currentRead = getCurrent_A(); sprintf(txt, "%2.3fA", currentRead); res = strcmp(txt,oldTxt); if(res != 0) { updateLabel(txt, 180, 140, lab); strcpy(oldTxt,txt); } delay_ms(250); } } Downloads mikroBUS™ Standard specification LTS 6-NP datasheet LibStock: LEM click library LEM click schematic https://www.mikroe.com/lem-click 3-8-18