M5 Stack PDM Microphone Unit (SPM1423) PDM mini Unit is a digital MEMS silicon-based microphone based on PDM (Pulse Density Modulation) signal. The microphone has a high signal-to-noise ratio, high sensitivity, low power consumption, anti-radio frequency interference, smooth frequency response, and other characteristics. It automatically switches the microphone state according to the clock frequency (power down/activate/sleep)and can be widely used for the audio data collection on wearable devices and smart digital devices. Applications: Spectrum Analyzer Recorder Noise meter Package Includes: 1x PDM mini Unit1x HY2.0 4P Cable(5CM) Specifications: Sensitivity 94dB SPL@1KHz Nom.:-22dBFS Signal to Noise Ratio 94dB SPL@1KHz,A-weighted Nom.:61.4dB Total Harmonic Distortion 100dB SPL@1KHz Nom.:1% Working voltage range 1.6 V to 3.6 V Working Current 600µA Dimensions 24 x 24 x 13mm Weight 8gm

M5 Stick Microphone Unit (LM393) The microphone unit is a sound sensor with a built-in omnidirectional electret microphone.The signal is amplified and output by microphone preamplifier max4466. The amplifier can effectively suppress power supply noise and common mode noise, and the output signal has high sound recovery and can be used in noisy environments.The unit can not only output analog signals, but also output digital level signals. The built-in LM393 double voltage comparator can set the comparison voltage threshold by adjusting 10K adjustable resistance.The sensor is very suitable for acoustic electrical conversion, audio recording/sampling, FFT acoustic feedback, voice switch, and other projects. Applications: FFT Spectrum Display Audio Sample / Record Voice Switch Package Includes: 1x Microphone Unit1x Grove Cable Specifications: Microphone sensitivity / SNR 52dB/40dB Output Signal Analog / digital Input Voltage 5V Dimensions 32 x 24 x 8mm Weight 16gm

M5Stack Time-of-Flight Ranging Unit (VL53L0X) ToF employs time-of-flight techniques to resolve the distance between the emitting point and the reach point of a subject, measuring the round trip time of an artificial light signal provided by a laser.This unit integrated a distance measuring sensor VL53L0x providing accurate distance measurement whatever the target reflectance, unlike conventional technologies. It can measure absolute distances up to 2m in less than 30ms.This unit communicates with M5Core via I2C(0x29). In this case, make sure you use the 3.3V on SDA and SCL, M5Core GROVE provides 3.3V to data pins, 5V to the power pin. only 3.3v allowed on VL53L0x. Applications: 1D gesture recognition Laser Ranging 3D structured light imaging（3D sensing） Camera assist (ultra-fast autofocus and depth of field) Package Includes: 1x ToF Unit1x Grove Cable Specifications: Measuring distance 0.3-2m Measurement accuracy ±3% Dimensions 32 x 24 x 8mm Weight 17gm

M5 StickC ToF HAT (VL53L0X) ToF HAT is a high-precision laser-ranging sensor specifically designed for M5StickC. Integrated with VL53L0X and 940nm VCSEL emitter. It can provide high precision and low latency performance on object distance detection. The VL53L0X is a new generation Time-of-Flight (ToF) laser-ranging module housed in the smallest package on the market today, providing accurate distance measurement whatever the target reflectances, unlike conventional technologies. It can measure absolute distances up to 2m, setting a new benchmark in ranging performance levels, opening the door to various new applications. The VL53L0X integrates a leading-edge SPAD array (Single Photon Avalanche Diodes) and embeds ST’s second-generation FlightSenseTM patented technology. The VL53L0X’s 940 nm VCSEL emitter (Vertical-Cavity Surface-Emitting Laser), is invisible to the human eye, coupled with internal physical infrared filters, it enables longer ranging distances, higher immunity to ambient light, and better robustness to cover glass optical crosstalk.Communication Info: I2C, 0x29, GPIO0/26. Applications: Obstacle recognition Gesture Recognition Laser Ranging 3D structured light imaging (3D sensing) Camera assist (super-fast autofocus and depth of field map) Package Includes: 1 x ToF Hat Specifications: Communication protocol I2C：0x29 Measuring distance 0.3-2m Measurement accuracy ±3% Dimensions 24 x 20.3 x 13.8mm Weight 8gm

M5 StickC Speaker Hat (PAM8303) SPK HAT is an M5StickC compatible speaker, integrated PAM8303 amplifier (3w single-channel type D power amplifier), High PSRR and differential inputs eliminate noise and rf interference, thus it has the characteristics of simple functions and high audio reproduction. Applications: MP4/MP3 Package Includes: 1 x Speaker Hat Specifications: Dimensions 25 x 24 x 14mm Weight 13gm

M5 Stack Earth Moisture Unit EARTH unit is a Soil Moisture Sensor for measuring the moisture in the soil and similar materials.The soil moisture sensor usage is pretty straight forward, the two large exposed pads function as probes for the sensor, together acting as a variable resistor.The higher moisture that is in the soil means the better the conductivity between the two so that the sensor will result in lower resistance, and a higher SIG out.You can read the moisture in the soil by using the ADC. Inside this Unit, we've added extra potentiometers to change the measurement range. Note: Electrode of the unit is not anti-corrosive, or waterproof, for POC purposes only. Please, do NOT put it in a humid environment for a long while. Package Includes: 1x EARTH unit1x GROVE Cable Specifications: Dimensions 64.4 x 24.1 x 8.1mm Weight 18gm

M5 Stack PIR Motion Unit (AS312) The M5 Stack PIR Motion Unit (AS312) is a human body infrared unit that detects the infrared radiation emitted and reflected by the human body or object. When infrared is detected, the output level is high and it takes a while. The unit has a 2-second delay time and communicates with the M5Core via the GROVE B. It has a sensing range of less than 100° and a quiescent current of less than 60uA. The unit supports UIFlow and Arduino and has two Lego installation holes. The M5 Stack PIR Motion Unit (AS312) can be used in various applications, such as an automatic system to perform the tasks of Safe Entry, a gate/door fingerprint security system with body temperature checks for the anti-COVID measure, and a simple watch device using UIFlow. The unit is reasonably priced and has received positive reviews for its quality and usefulness. The M5 Stack PIR Motion Unit (AS312) is available for purchase from various online stores. Features Detects infrared radiation emitted and reflected by human body or object Sensing range of less than 100° Delay time of 2 seconds Communicates with M5Core via GROVE B Two Lego installation holes Quiescent current of less than 60uA Small and lightweight, easy to integrate into various projects Applications: Security Product Package Includes: 1x PIR unit1x GROVE Cable Specifications: Dimensions 32 x 24 x 12mm Weight 20gm

M5 Stack Mini Angle Unit with Potentiometer ANGLE is a rotary switch Unit that simply includes a 10K Ohm potentiometer inside. This unit can be used for Continuous signal rotatory control for applications such as volume, brightness, or motor speed.A potentiometer is a manually adjustable variable resistor with three terminals: Two terminals are connected to a resistive element, the third terminal is connected to an adjustable wiper. The position of the wiper determines the output voltage.The out voltage is captured and converted by AD on ESP32 on portB.In the M5 Stack product system, Normally the Grove color indicates the type of communications.Black: Single BUS (AD, DA, GPIO)Red: I2CBlue: UartWhite: Others(depends) Package Includes: 1x ANGLE Unit1x Grove Cable Specifications: Output voltage 0 ~ 2500mV Dimensions 32 x 24 x 22mm Weight 23gm

M5Stack TVOC/eCO2 Gas Unit (SGP30) M5Stack TVOC/eCO2 mini Unit is a digital multi-pixel gas sensor unit with integrated SGP30.It mainly measures various VOC (volatile organic compounds) and H2 in the air. It can be programmed to detect TVOC (total volatile organic compounds) and eCO2 (equivalent carbon dioxide reading)Concentration measurement.Typical measurement accuracy is 15% within the measurement range, the SGP30 reading is internally calibrated and output, which can maintain long-term stability. SGP30 uses I2C protocol communication with an on-chip humidity compensation function, which can be turned on through an external humidity sensor.If you need to obtain accurate results, you need to calibrate according to a known measurement source. SGP30 has a built-in calibration function. In addition, eCO2 is calculated based on the concentration of H2 and cannot completely replace "true" CO2 sensors for laboratory use. Applications: Air quality monitoring eCO2 concentration Package Includes: 1x TVOC/eCO2 Mini-Unit1x HY2.0 Cable(5CM) Specifications: Measurement range Ethanol：0-1000ppm,H2：0-1000ppm,TVOC：0-60000 ppb,eCO2：400-60000 ppm TVOC/eCO2 Sampling rate 1Hz TVOC/eCO2 Resolution TVOC：1/6/32bbp,eCO2：1/3/9/31ppm Communication protocol I2C：0x58 Dimensions 24 x 24 x 13mm Weight 8gm

M5 StickC Thermal Camera Hat (MLX90640) THERMAL HAT is an M5StickC-compatible human infrared thermal imaging. Built-in MLX90640 thermopile sensor that measures the surface temperature of an object and generates a thermal image through a temperature gradient formed by the surface temperature. Resolution is 32 x 24)MLX90640 Infrared (IR) sensor arrays offer high resolution and the ability to work reliably in harsh environments. Compared to expensive high-end thermal imaging cameras, Hat-Thermal is a cost-effective alternative. Relatively general Micro-bolometer, the advantage of this sensor is that it does not require frequent re-calibration, thus ensuring continuity of detection and reducing system maintenance costs. The field of view provides a wide-angle version (110 ° × 75 °).The I2C address is 0x33. (GOIO 0/26) Applications: High precision non-contact temperature measurements Intrusion / Movement detection Visual IR thermometers Package Includes: 1 x Thermal Camera Hat Specifications: Communication protocol I2C：0x33 Dimensions 25 x 24 x 14mm Weight 13gm

5StickC Digital to Analog Convertor Hat MCP4725 Digital to Analog Convertor HAT is also a type of C-HAT specifically design for the M5StickC controller. Same as the Digital to Analog Convertor unit, this is a voltage output Digital to Analog Convertor converter for stickc. It can generate a voltage of 0～3.3V.Packed with a Digital to Analog Convertor chip MCP4725, which is low-power, high accuracy, single-channel, 12-bit buffered voltage output Digital-to-Analog Converter with a non-volatile memory (EEPROM). Its onboard precision output amplifier allows it to achieve rail-to-rail analog output swing.The Digital to Analog Convertor input and configuration data can be programmed to the non-volatile memory (EEPROM) by the user using the I2C interface command. I2C address: 0x60 Applications: Set Pointor Offset Trimming Sensor Calibration Closed-Loop Servo Control Low Power Portable Instrumentation PC Peripherals Data Acquisition Systems Package Includes: 1x Digital to Analog Convertor HAT1x 2 Pin 3.96 Pitch Terminal Specifications: Dimensions 24 x 25 x 13mm Weight 19gm