Air quality 5 click is a triple MOS sensor on a single Click board™, which can detect gas pollution for a number of different gases. The onboard sensor is specially designed to detect the pollution from automobile exhausts, as well as the gas pollution from the industrial or agricultural industry. This Click board™ uses the MiCS-6814, a compact MOS sensor with three fully independent sensing elements in one package: RED sensor, OX sensor, and NH3 sensor. Each of these sensors reacts with the specific type of gases, providing gas readings that including carbon monoxide (CO), nitrogen dioxide (NO2), ethanol (C2H5OH), hydrogen (H2), ammonia (NH3), methane (CH4), propane (C3H8), and isobutane (C4H10). Measurement conversion is handled by the onboard 12bit ADC converter and it is available via the I2C interface.

USB UART 3 click is a versatile and feature-rich USB to UART interface from Silicon Labs. It uses CP2102N which is a part of their USBXpress™ family. These devices are designed to quickly add a USB 2.0 full-speed compliant UART interface for custom applications, by eliminating firmware complexity and reducing development time. The Click board™ requires appropriate drivers to be installed in the host OS, in order to support the virtual COM port functionality. Once installed, this device offers amazing connectivity options, up to 3 Mbaud, a very low number of external components, simplified setup of the advanced options via the GUI-based configurator (if required), out-of-the-box functionality with the royalty-free virtual COM port drivers, provided by the Silicon Labs.

IR Grid click is a thermal imaging sensor. It has an array of 64 very sensitive factory calibrated IR elements (pixels), arranged in 4 rows of 16 pixels, each measuring an object temperature up to 300°C within its local Field of View (FOV). The MLX90621BAD IR sensor used on this Click board™ has only four pins, and it is mounted inside of the industry standard TO39 package. It is equipped with 2Kbit of EEPROM for storing the compensation and calibration parameters. The MLX90621BAD IR sensor array IC has I2C compatible digital interface, allowing it to be interfaced with a wide range of different MCUs. The sensor used on this Click board™ offers 40° x 10° FOV. The sensor can output up to 512 frames per second (FPS).

Color 6 click is a very accurate color sensing Click board™ which features the AS73211, an XYZ true color sensor from ams. This company has developed a proprietary JENCOLOR™ filter technology, which ensures compliance to the CIE 1931/DIN 5033 standard (human eye response), providing an accurate XYZ color space response. The low noise 24bit ADCs ensure the highest dynamic range available on market, with the irradiance responsivity per countdown to 0.0005 pW/cm². This sensor offers a fast I2C interface for the communication with the host MCU.

Magneto 5 click is a very accurate and reliable magnetic sensor device, which features the MEMSIC MMC34160PJ, a 3-axis magnetic sensor IC. MMC34160PJ IC features an onboard signal processing and I2C communication, simplifying the application development and reducing the host MCU load. It is a very accurate sensor, which can sense the heading direction with the precision of ±1°, with the full scale magnetic field detection of ±16 G. The device also has a RESET function, which eliminates measurement offset errors and restores the internal magnetic field orientation.

Charger 2 click is a LiPo/Li-Ion battery charger with the additional monitoring IC onboard. This Click board™ as a whole, offers unpreceded battery charging and monitoring solution for 3.7V LiPo/Li-Ion batteries, with the capacity measurement/gas gauge function, for up to 7000 mAh. It provides measurement data via the I2C interface and two signaling LEDs on the Click board™ itself. It features two dedicated ICs - one for charging the battery and one for monitoring its status. The charging function is performed by the STBC08, a standalone linear battery charger IC, while the monitoring of the critical battery parameters is done by the STC3100, a battery monitor IC with Coulomb counter/gas gauge.

Proximity 6 click is a versatile proximity detection device on a Click board™. It can detect a foreign object distanced up to 20cm. The Click board™ features a detection sensor IC that can trigger a threshold based interrupts, which makes this Click board™ capable of detecting even simple gesture movements. The advanced onboard IC sensor features LED driver section, a light sensor with the integrated analog front end (AFE), 14 bit analog to digital converter (ADC), and digital engine for processing and aggregation of the measurement result, which simplifies the firmware development. The ambient light cancellation includes both digital and optical filtering, resulting in increased detection reliability.

Pressure 4 click is an absolute barometric pressure measurement Click board™, which features a low power consumption, high precision barometric pressure sensor. Capable of using both SPI and I2C communication protocols, Pressure 4 click allows being interfaced with a broad range of various microcontroller units (MCUs). The sensor used on this Click board™ features onboard processing capabilities, such as the IIR filtering, used to filter out abrupt changes of pressure. Low power consumption allows Pressure 4 click to be used in many portable, battery-powered applications. Besides the pressure, it can also measure the ambient temperature, which can be used for the compensation calculations.

DS1990A is a unique serial number identification iButton™. The iButton is a technology based on the one-wire communication protocol, and a chip packed in a robust stainless steel casing. This button shaped device has two contacts - the lid and the base. These contacts carry the necessary connections down to a sensitive silicone chip, embedded inside the metal button. When the iButton touches the reader probe on the Click board™, it establishes the communication with the host MCU, via the one-wire interface. The communication is almost instant, so it is enough to press the iButton lightly to the probe contacts.

iButton click - is an iButton™ probe Click board™. The iButton is a technology based on the one-wire communication protocol, and a chip usually packed in a robust stainless steel casing. The button-shaped iButton device has two contacts - the lid and the base. These contacts carry the necessary connections down to a sensitive silicone chip, embedded inside the metal button. When the iButton touches the reader probe on the Click board™, it establishes the communication with the host MCU, via the one-wire interface. The communication is almost instant, so it is enough to press the iButton lightly to the probe contacts.

Note: The Click board™ comes with the DS1990A, a serial number iButton™ device with a unique 64-bit serial number. For more information on the serial number iButton™ device, please visit the official product page.

Nano Power 2 click is a very low power voltage comparator, aimed at portable and battery-powered applications. It allows detecting a difference of two voltage potentials, applied on two input pins. The device can detect differences very precisely, avoiding oscillations that can occur when both input voltages are equal by employing an internal hysteresis. Nano Power 2 click offers a choice to select one of the input voltages from the internal fixed reference of 1.2V, or by setting both input voltages by the onboard potentiometers.

LED Driver 4 click is a form of a high-efficiency boost converter that is ideally suited for driving an array of white LEDs. The driver has the ability to dim the connected LED array, without producing any noise on the output. The Click board™ is capable of driving a LED array with up to 26V, providing a constant current to the LED segments. The LED segments are connected in series between the output terminals, which results in an even current distribution, thus providing a uniform brightness of each LED. A built-in soft-start function prevents large inrush current. Output open LED circuit, thermal, and undervoltage protection, provide a reliable operation.

Nano Power click is a boost (step-up) DC-DC converter click with extremely high efficiency and very low input voltage, aimed at the low power IoT market and battery-powered sensors and other devices. The input voltage can be very low: the conversion will start for voltages down to 0.95V, providing 5V to the connected load. Once started, the input voltage can drop as low as the 0.4V, depending on the connected load. The onboard DC-DC converter IC uses the pulse frequency modulation control scheme (PFM), that allows high efficiency and low power consumption for a wide range of output currents.

Brushless 5 click is a 3 phase sensorless BLDC motor controller, with a soft-switching feature for reduced motor noise and EMI, and precise BEMF motor sensing, which eliminates the need for Hall-sensors in motor applications. It can drive 5V-16V motors with up to 500 mA current. The motor driver allows speed control via the PWM signal from the host MCU. It also features an output pin for reading the speed of the motor. Delayed phase commutation ensures a reliable motor start, while the Lock Detect function prevents damage and overheating.

H-Bridge click is a high-efficiency dual H-bridge driver Click board™, capable of providing reasonably high current while driving the connected load with up to 7V. Since the used driver IC has two full H-bridge channels, this Click board™ is an ideal solution for driving smaller bipolar stepper motors. H-Bridge click provides driving in both directions, with an addition of the brake mode, and the high impedance mode (Hi-Z). Overshoot current suppression algorithm protects the output stages from being damaged if both high-side and low-side MOSFETs on a single H-bridge channel become conductive.

Altitude 2 click is a high-resolution barometric pressure sensor Click board™. It provides very accurate measurements of temperature and atmospheric pressure, which can be used to calculate the altitude with a very high resolution of 20cm per step. Besides that, the device also includes features such as the ultra-low noise delta-sigma 24bit ADC, low power consumption, fast conversion times, pre-programmed unique compensation values, and more. Low count of external components requirement, along with the simple interface which requires no extensive configuration programming, makes this sensor very attractive for building altitude or air pressure measuring applications.

BarGraph 2 click is a 10-segment bar graph display click, which uses a high-quality, multicolor bar graph LED display. The bar graph display is a very popular device for displaying various properties, whether it be an audio level, current/voltage level, position of the encoder, and generally any property that can be displayed in a form of a bar graph. The segments of the onboard bar graph LED display are bright and uniformly colored, providing a nice and clean visual feedback.

Brushless 4 click is a 3 phase sensorless BLDC motor driver, which features a 180° sinusoidal drive, providing high efficiency and low acoustic noise. This type of drivers inherently provides higher torque in general, compared to classical 120° BLDC motor drivers. Brushless 4 click allows a wide voltage range to be used for the power supply: from 2V, up to 14V. The Click board™ features a standard set of protection features: overvoltage protection, overtemperature protection, overcurrent limiting, but also some more specific protection features, such as the rotor lock-up protection and automatic restart function.

DIGI POT 3 click is a versatile and feature-rich digital potentiometer click with 1024 steps and an internal non-volatile memory (EEMEM), which can be used for storing the wiper position, but also for storing various user data. The user EEMEM area has 14 words, each with 16bit length. The Click board™ can be used with both unipolar and bipolar signals, selectable by onboard SMD jumpers. The wiper position can be increased or decreased linearly or by the logarithmic scale (6db/step) with a single command. A special scratch register allows direct programming of the wiper position. It can be stored to the non-volatile memory and on the power on, it is automatically restored. This means that the device restores its last position after the power on - just like its mechanical counterpart.

Opto 2 click is an optical isolator used to provide an optical galvanic isolation of sensitive lines. The used optoisolation elements require very low input current to be driven, down to 1.3mA (min). The speed of the internal optocoupler elements of the Opto click 2 allows it to work with the signals up to 20MHz. The Opto click 2 can be used to provide a galvanic isolation of the MCU pins, allowing driving by external components, while protecting it from surges up to 5kV on the driver side.