IR 2 Click Board™

Product Code: MIKROE-5088

How Does The IR 2 Click Board™ Work? The IR 2 Click Board™ as its foundation uses the TSMP58138, a miniaturized sensor for receiving the modulated signal of QEE113 IR emitting diode from Vishay Semiconductors. All Vishay IR receivers have the same circuit architecture consisting of a photodetector, pre-amplifier, and automatic gain control (ACG) to surpass ambient noise with signals transmitted to it with a wavelength of 940nm. This Click board™ represents a compact and easy solution for adding infrared (IR) remote control to your design suitable for IR repeater applications. The infrared signal generates an equivalent photocurrent in the integrated photo PIN diode. The DC part of the signal is blocked in the bias circuit, and the AC part is passed to a trans impedance amplifier, followed by an automatic gain-control amplifier and an integrated bandpass filter. A comparator, an integrator, and a Schmitt Trigger stage perform the final signal conditioning. The blocks "Automatic Gain Control" and "Automatic Threshold Control" dynamically control the operating points and the threshold levels required to suppress noise from disturbance sources.

The digital output signal has an active-low polarity and consists of an incoming optical burst envelope signal without the carrier frequency. The IR 2 Click Board™ communicates with the target MCU via selectable GPIO lines. The selection can be made by positioning SMD jumpers labelled as COMM SEL to an appropriate position. The default configuration of this Click board™ allows transmission via PWM pin of the mikroBUS™ socket and reception via INT pin, while the other configuration allows communication using TX and RX pins. The IR 2 Click Board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Optical Applications The IR 2 Click Board™ can be used for IR repeater applications On-board modules TSMP58138 - miniaturized sensor for receiving the modulated signal of IR emitting diode from Vishay Semiconductors Key Features Photo detector and preamplifier in one package, AGC to suppress ambient noise, improved shielding againts electric field disturbance, high sensitivity, long receiving range, flexibility, low power consumption, and more Interface GPIO,PWM,UART Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout of the IR 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 PWM Transmit Signal NC 2 RST INT 15 INT Receive Signal NC 3 CS RX 14 TX Transmit Signal NC 4 SCK TX 13 RX Transmit Signal NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1-JP2 COMM SEL Right Communication Interface Selection UART/GPIO: Left position UART, Right position GPIO IR 2 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage - 3.3 - V IR Wavelenght