Keep an eye on your health no matter where you are with MAX30205 and PIC32MZ1024EFH064

Fever Click is based on the MAX30205, a human body temperature sensor from Analog Devices. The sensor converts the temperature measurements to a digital form using a high-resolution (16-bit) sigma-delta analog-to-digital converter (ADC). It can be used for monitoring the body temperature, or it can be set to alert about "fever – no fever" states: the condition of the human body when the temperature is greater than 37.5℃ is considered a fever. The sensor can work in one-shot mode and shutdown mode, which helps reduce power usage. In addition, it features the selectable timeout, which prevents bus lockup and separate open-drain overtemperature shutdown (OS) output that operates as interrupt or as comparator/thermostat output. When operating as an interrupt, the

overtemperature shutdown will be asserted once the programmed threshold temperature has been exceeded. Still, it will be de-asserted when the temperature drops below the hysteresis. In this way, the sensor works as a thermostat, and in this mode, it can initiate cooling fans, automatize air conditioning, and more. In comparator mode, the polarity of the OS pin can be programmed. A special fault counter is used to avoid erratic behavior near the threshold range, where the number of faults (conditions when the temperature exceeds threshold values) is determined by the software. When the programmed number of faults is reached, the OS pin will be asserted. This way, it acts like a filter, preventing false triggering situations. Fever Click uses a standard 2-Wire I2C interface to

communicate with the host MCU, supporting a clock frequency of up to 400kHz. The I2C bus has lowpass filters applied to its pins, preventing excessive EMI from affecting communication, thus making the I2C interface on this Click board™ immune to interferences, enabling it to work even in reasonably noisy environments. This is necessary for medical equipment. The overtemperature shutdown pin is available on the OS pin of the mikroBUS™ socket. This 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. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

PIC32MZ Clicker is a compact starter development board that brings the flexibility of add-on Click boards™ to your favorite microcontroller, making it a perfect starter kit for implementing your ideas. It comes with an onboard 32-bit PIC32MZ microcontroller with FPU from Microchip, a USB connector, LED indicators, buttons, a mikroProg connector, and a header for interfacing with external electronics. Thanks to its compact design with clear and easy-recognizable silkscreen markings, it provides a fluid and immersive working experience, allowing access anywhere and under

any circumstances. Each part of the PIC32MZ Clicker development kit contains the components necessary for the most efficient operation of the same board. In addition to the possibility of choosing the PIC32MZ Clicker programming method, using USB HID mikroBootloader, or through an external mikroProg connector for PIC, dsPIC, or PIC32 programmer, the Clicker board also includes a clean and regulated power supply module for the development kit. The USB Micro-B connection can provide up to 500mA of current, which is more than enough to operate all onboard

and additional modules. All communication methods that mikroBUS™ itself supports are on this board, including the well-established mikroBUS™ socket, reset button, and several buttons and LED indicators. PIC32MZ Clicker is an integral part of the Mikroe ecosystem, allowing you to create a new application in minutes. Natively supported by Mikroe software tools, it covers many aspects of prototyping thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.