The CH32X035/X033 series, developed by WCH, encompasses industrial-grade microcontrollers based on the QingKe RISC-V core. These microcontrollers, including models such as the CH32X035R8T6, CH32X035C8T6, CH32X035G8U6, CH32X035G8R6, CH32X035F8U6, CH32X035F7P6, and CH32X033F8P6, are equipped with integrated USB and PD PHY, supporting USB Host and Device functionalities, as well as PDUSB and Type-C fast charging capabilities. The series features a programmable protocol I/O controller, two groups of operational amplifiers (OPA), three groups of comparators (CMP), four USARTs, I2C, SPI, multiple timers, a 12-bit ADC, and 14-channel capacitive touch-key interfaces, among other peripherals. These microcontrollers offer a comprehensive suite of features, including a 32-bit QingKe RISC-V4C core with support for the RV32IMAC instruction set, fast interrupt handling, and low-power modes, making them suitable for a wide range of embedded applications. With a robust memory architecture comprising 20KB SRAM and 62KB CodeFlash, alongside various power management and security features, the CH32X035/X033 series is designed to deliver high performance and flexibility for industrial applications.

The ESP32-DEVKITC-VE evaluation kit from Espressif Systems is a high-performance development platform for RF, RFID, and wireless applications. It features the ESP32-WROVER-E with embedded Xtensa dual-core 32-bit LX6 microprocessor running up to 240 MHz, with 8MB Flash and 8MB PSRAM for efficient data processing. This board supports Wi-Fi 802.11 b/g/n and Bluetooth® Smart Ready 4.x (BLE) connectivity at 2.4GHz, offering wireless communication options. With 448KB ROM, 520KB SRAM, and 16KB SRAM in RTC, it provides ample memory for complex applications. It includes up to 24 GPIOs, SD card, UART, SPI, SDIO, I2C, LED and motor PWM, I2S, IR, pulse counter, capacitive touch sensor, ADC, DAC, and TWAI® (compatible with ISO 11898-1/CAN 2.0) #commonpartslibrary #ESP32-WROVER-E #evaluationboard

Accelerometer X, Y, Z Axis ±3g 1.6kHz (X,Y), 550Hz (Z) 16-LFCSP-LQ (4x4) The ADXL335BCPZ-RL7 is a low-power, complete 3-axis accelerometer with analog voltage outputs proportional to acceleration. It measures acceleration along the X, Y, and Z axes with a full-scale range of ±3 g. This device integrates a micro-electromechanical system (MEMS) sensor with signal conditioning circuitry, enabling direct analog output without the need for external amplification. The RL7 suffix indicates tape-and-reel packaging for automated assembly. The ADXL335BCPZ-RL7 is designed for compact, battery-powered, and motion-sensitive applications where low power consumption and ease of integration are critical. Functional Overview The accelerometer operates using a capacitive sensing structure. Acceleration causes displacement of an internal mass, changing capacitance, which is converted into a proportional analog voltage output. Each axis operates independently and provides a continuous analog signal that can be read by a microcontroller’s ADC. External capacitors allow the user to configure bandwidth per axis, enabling optimization for noise or response speed. Electrical Characteristics Supply Voltage Range: 1.8 V to 3.6 V Supply Current: Typical: 350 µA Measurement Range: ±3 g Sensitivity (Typical): 300 mV/g Zero-g Bias Level: Approximately VCC / 2 Bandwidth: Adjustable via external capacitors Typical limits: X, Y axes: up to 1600 Hz Z axis: up to 550 Hz Output Characteristics Output Type: Analog (ratiometric to supply voltage) Axes: Three independent outputs (XOUT, YOUT, ZOUT) Output Impedance: Approximately 32 kΩ Noise Density: X/Y axes: ~150 µg/√Hz Z axis: ~300 µg/√Hz Mechanical Characteristics Package Type: 16-lead LFCSP Package Dimensions: Approximately 4 mm × 4 mm × 1.45 mm Mounting: Surface mount Packaging Option: Tape and reel (RL7) Environmental Specifications Operating Temperature Range: −40°C to +85°C Storage Temperature Range: −65°C to +150°C Shock Survival: Up to 10,000 g Interface Requirements External Components: Capacitors required for bandwidth selection (one per axis) Interface Type: Analog voltage outputs compatible with ADC inputs Pin Description (Summary) ST: Self-test input XOUT: X-axis analog output YOUT: Y-axis analog output ZOUT: Z-axis analog output VCC: Power supply GND: Ground NC: No connection / reserved Applications Tilt and orientation sensing Motion and vibration detection Portable electronics Gaming controllers Wearable devices Industrial monitoring systems Key Features Three-axis acceleration measurement Low power consumption Analog output for simple interfacing Compact MEMS package Adjustable bandwidth Wide temperature operating range Tape-and-reel packaging for automated manufacturing #commonpartslibrary #integratedcircuit #sensor #accelerometer

Accelerometer X, Y, Z Axis ±3g 1.6kHz (X,Y), 550Hz (Z) 16-LFCSP-LQ (4x4) The ADXL335BCPZ is a small, thin, low-power, complete 3-axis accelerometer with signal-conditioned voltage outputs. It measures acceleration with a minimum full-scale range of ±3 g. The device outputs analog voltages proportional to acceleration in each of the three orthogonal axes (X, Y, and Z). The accelerometer is designed for low power consumption and high resolution, making it suitable for mobile devices, tilt sensing, motion detection, and vibration monitoring. It operates over a wide temperature range and requires minimal external components, enabling easy integration into compact systems. Functional Overview The ADXL335 uses a capacitive sensing structure to detect acceleration. Changes in acceleration result in differential capacitance changes, which are converted into voltage outputs through an internal signal conditioning circuit. Each axis provides an independent analog output that can be directly interfaced with ADC inputs of microcontrollers or other processing units. Bandwidth for each axis can be adjusted using external capacitors, allowing flexibility depending on application requirements. Electrical Characteristics Supply Voltage Range: 1.8 V to 3.6 V Supply Current: Typical: 350 µA Measurement Range: ±3 g Sensitivity (Typical): 300 mV/g Zero-g Bias Level: Approximately mid-supply voltage Bandwidth: User-selectable via external capacitors Typical range: X, Y axes: up to 1600 Hz Z axis: up to 550 Hz Output Characteristics Output Type: Analog voltage (ratiometric to supply voltage) Number of Axes: Three (X, Y, Z) Output Noise: Low noise suitable for precision motion sensing Cross-Axis Sensitivity: Typically ±1% Mechanical Characteristics Package Type: 16-lead LFCSP (Lead Frame Chip Scale Package) Dimensions: Approximately 4 mm × 4 mm × 1.45 mm Mounting: Surface mount Environmental Specifications Operating Temperature Range: −40°C to +85°C Shock Survivability: Up to 10,000 g Interface Requirements External Components: Requires capacitors for bandwidth setting (one per axis) Output Interface: Direct analog output compatible with ADC inputs Applications Mobile devices and handheld electronics Tilt and orientation sensing Vibration monitoring systems Gaming and motion input devices Industrial instrumentation Wearable electronics Key Features Low power consumption Compact form factor High resolution analog outputs User-adjustable bandwidth Wide operating temperature range Simple integration with minimal external components #commonpartslibrary #sensor #transducer #motionsensor #accelerometer

Automotive, 60-V, 6-A, 30-mΩ, one-channel smart high-side switch with adjustable current limit TPS1HTC30-Q1 is a single-channel, smart high-side switch, with integrated NMOS power FET and charge pump, designed to meet the requirements of 24-V automotive battery systems. The low RON(30 mΩ) minimizes device power dissipation driving a wide range of output load current up to 6-A DC, and the 60- V DC operating range improves system robustness. The device integrates protection features such as thermal shutdown, output clamp, and current limit. These features improve system robustness during fault events such as short circuit. TPS1HTC30-Q1 implements an adjustable current limiting circuit that improves the reliability of the system by reducing inrush current when driving large capacitive loads and minimizing overload current. The device also provides an accurate load current sense that allows for improved load diagnostics such as overload and open-load detection enabling better predictive maintenance. TPS1HTC30-Q1 is available in a small 14-pin, 4.40- mm × 5.0-mm HTSSOP leaded package with 0.65- mm pin pitch minimizing the PCB footprint. • Single-channel smart high-side power switch for 24-V automotive systems with full diagnostics • Wide operating voltage range: 6 V to 60 V – OVP protection: 66 V • Low RON: 30-mΩ typical, 55-mΩ maximum • Low standby current: < 0.5 µA • Low quiescent current (Iq): < 2 mA • Improve system level reliability through adjustable current limiting – Current limit: 2 A –16 A • Accurate current sensing: ±4% at 1 A • Protection – Overload and short-circuit protection – Integrated inductive discharge clamp – Undervoltage lockout (UVLO) protection – Loss of GND, loss of supply protection – Reverse battery protection with external components • Diagnostics – On and off state output open-load and short-tobattery detection – Overload and short to ground detection – Absolute and relative thermal shutdown detection • Functional Safety-Capable – Documentation available to aid functional safety system design • Operating junction temperature: –40 to 125°C • Input control: 1.8-V, 3.3-V and 5-V logic compatible • Integrated fault sense voltage scaling for ADC protection • Qualifications – AEC-Q100 qualified for automotive applications • Temperature grade 1: –40°C to +125°C, TA • 14-pin thermally-enhanced TSSOP package TPS1HTC30AQPWPRQ1 #CommonPartsLibrary #IntegratedCircuit

Board Mount Humidity Sensors Intermediate Humidity and Temperature Sensor Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH 4 s Surface Mount The SHT41-AD1B-R2 is a fully calibrated, low-power environmental sensor that measures relative humidity (RH) and temperature. It integrates sensing elements, signal processing, and a digital interface into a small surface-mount package, making it ideal for space-constrained designs. Key Features Sensor Type: Digital humidity and temperature sensor Interface: I²C (easy MCU integration) Supply Voltage: ~1.08 V to 3.6 V Humidity Accuracy: up to ±1.8% RH (typical) Temperature Accuracy: up to ±0.2 °C (typical) Response Time: Fast measurement and low latency Power Consumption: Ultra-low, suitable for battery devices Package: DFN (compact, ~1.5 × 1.5 mm) Factory Calibration: No external calibration required Functional Overview The sensor uses capacitive humidity sensing combined with a bandgap temperature sensor. Internal electronics convert these measurements into digital data via I²C, eliminating the need for external ADCs or complex signal conditioning. Design Advantages Small footprint for compact PCBs Low power consumption for IoT and portable devices High reliability with long-term stability Fast response time for real-time monitoring Simple integration with microcontrollers Typical Applications IoT and smart home devices HVAC and climate control systems Wearables and portable electronics Industrial monitoring systems Environmental data logging #CommonPartsLibrary #Sensors,-Transducer #Humidity #Moisture-Sensor #SHT4x

Power Switch/Driver 1:1 N-Channel 1.35A 28-WQFN (4x5) The TPS274160 device is a smart high-side switch with four integrated 160-mΩ NMOS power FETs and a chargepump to drive the gates. The device offers robust protection and diagnostic features to drive various loads (inductive, capacitive, and resistive) such as low wattage bulbs, LEDs, relays, solenoids, heaters, and sub-modules. The part enables flexible, multi-channel output configurations through paralleling channels and is in a very small WQFN package to enable usage in space constrained applications. The device is protected against short circuit events and over-temperature events, safely shutting off the output during fault events. The device also implements an external adjustable current limiting feature. This feature improves the reliability of the system by reducing inrush current when driving large capacitive loads and minimizing overload current thereby eliminating system supply brown out condition. The device also integrates diagnostic features like output current monitoring (version B) and open load detection to enable improved intelligence in modules and to enable predictive maintenance functionality. • Quad-channel 160-mΩ smart high-side switch • Wide DC operating voltage range: 5 V to 36 V – 50-V absolute maximum voltage • Accurate adjustable current limiting (250 mA to 4 A) • Intelligent diagnostic features – TPS274160A: Open-drain fault output – TPS274160B: Analog current sense – Open-load or short to supply detection in the off-state • Robust protection features – Short-circuit protection – Inductive load flyback clamp – Undervoltage lockout (UVLO) protection – Loss of GND protection • Excellent ESD protection on VS and OUT pins – ±8/±15 kV IEC 61000-4-2 ESD contact/air discharge • Available in small and 28-pin leadless QFN packages • Functional Safety-Capable – Documentation available to aid functional safety system design 2 Applications • Digital output modules • Standalone remote I/O • Motor drives • Solenoid or valve drive #TexasInstruments #TPS274160BRLHR #HighSideSwitch #SmartSwitch #IndustrialAutomation #PowerManagement #LoadDriver #CurrentLimiting #ProtectionIC #IndustrialControl #RemoteIO #SolenoidDriver #MotorDrive #EmbeddedSystems #ElectronicsDesign

All details fully confirmed from Azoteq's official IQS7222B datasheet and multiple verified distributor sources. Here's the complete spec. Engineering Specification — IQS7222B102QNR Manufacturer: Azoteq (Pty) Ltd Device Family: IQ Switch® ProxFusion® Series — IQS7222B General Description The IQS7222B102QNR is a high-channel-count capacitive touch and proximity sensing controller integrated circuit manufactured by Azoteq, belonging to the ProxFusion series of intelligent human interface sensing devices. The IQS7222B is a sensor fusion device for various multi-button applications that is fully I²C compatible, with on-chip calculations that enable the IC to respond effectively even in the lowest-power modes. It represents an expanded-channel evolution within Azoteq's IQS7222 family, offering a substantially higher mutual capacitance channel count than the IQS7222A variant while maintaining the same ProxFusion design philosophy of combining sophisticated on-chip sensing intelligence with a minimal external component requirement and a compact surface-mount package. Molex The IQS7222B is a highly flexible ProxFusion device that can configure up to eighteen mutual capacitance buttons or up to eight self-capacitance buttons, with nine external sensor pad connections available in the QFN package variant. Alternatively, it can configure up to twenty mutual capacitance buttons or eighteen mutual capacitance buttons with a proximity wake-up function. This high degree of channel configurability makes the device adaptable to a very broad range of physical interface configurations, from simple multi-button panels to complex touch arrays with simultaneous proximity wake-up capability, all within a single fixed-footprint IC that does not require a change of device between product variants with different button counts. MolexAmazon Target applications for the IQS7222B include remote control user interfaces, home automation device user interfaces, and wireless speaker controls. These application domains share common requirements for robust touch detection through cosmetic overlay materials such as glass, plastic, or painted surfaces, reliable operation in environments where the device may be exposed to moisture or contamination, and power efficiency sufficient to support battery-powered or always-on operation without significantly impacting battery life. The device's on-chip power management architecture, which features automated system power modes for optimal response versus consumption, directly addresses these requirements by allowing the device to spend the majority of its time in a low-current sleep or ultra-low-power state while still waking promptly in response to proximity or touch events. MolexMolex Built-in basic functions include automatic tuning, noise filtering, debounce and hysteresis, and dual direction trigger indication. The automatic tuning capability, implemented through Azoteq's proprietary ATI algorithm, compensates for variations in electrode capacitance that arise from PCB manufacturing tolerances, overlay thickness variation, and environmental factors such as temperature and supply voltage drift. This self-calibration eliminates the need for individual unit factory calibration and ensures consistent touch sensitivity across the full production run of any product built around this device. The noise filtering and debounce functions further improve the reliability of touch event detection in electrically noisy environments, preventing false triggers from electrical interference or mechanical vibration that could otherwise cause spurious button events in poorly filtered designs. Molex Both mutual capacitance and self-capacitance designs are possible with the IQS7222B, giving system designers the flexibility to choose the sensing modality most appropriate for their electrode layout and overlay configuration. Mutual capacitance sensing offers better noise immunity and the ability to detect touch through thicker overlay materials, while self-capacitance sensing allows a simpler single-electrode layout per button with potentially higher raw sensitivity. The I²C communication interface supports IRQ/RDY signaling at speeds up to Fast-Plus mode, providing efficient, low-latency event notification to the host microcontroller without requiring continuous polling of the device. The "QNR" suffix in the part number designates the QFN twenty-pin package variant, which offers the maximum external pad count for mutual capacitance configurations. MolexMolex Spec Sheet Identification Part Number: IQS7222B102QNR Device Family: IQ Switch ProxFusion Series — IQS7222B Manufacturer: Azoteq (Pty) Ltd Part Number Decode IQS7222B: Base device family, B-variant expanded channel count 102: Firmware/configuration variant designation QNR: QFN twenty-pin package, tape-and-reel Functional Classification Device Type: Multi-channel capacitive touch and proximity sensing controller IC Sensing Architecture: ProxFusion sensor fusion engine with on-chip processing Application Class: Multi-button, slider, and wheel human interface controller Channel Configuration Mutual Capacitance Buttons: Up to twenty configurable buttons Mutual Capacitance with Proximity Wake-Up: Up to eighteen mutual capacitance buttons with simultaneous proximity wake function Self-Capacitance Buttons: Up to eight self-capacitance buttons External Sensor Pad Connections: Nine pads available in QFN package Sensing Modalities Mutual Capacitance: Full channel array for high noise immunity and overlay penetration Self-Capacitance: Simplified single-electrode per button layout option Proximity Detection: Pre-touch proximity wake-up capability Built-In Processing Functions Automatic Tuning: Proprietary ATI algorithm for self-calibration and baseline normalization Noise Filtering: Integrated digital filtering for EMI and environmental noise rejection Debounce and Hysteresis: Per-channel configurable debounce and release hysteresis Dual Direction Trigger: Positive and negative delta event detection Host Interface Communication Protocol: I²C fully compatible Speed Grade: Up to Fast-Plus mode Event Signaling: IRQ/RDY interrupt output for host notification I²C Address: Configurable; additional address options available on special request Power Management Operating Modes: Active sensing, idle, and ultra-low-power modes Automated Power Mode Control: System-managed transitions for optimized response versus current consumption ULP Wake Capability: Proximity or touch event wake-up from ultra-low-power state Layout & Application Notes VREG Decoupling: Capacitor required at each VREG pin, placed as close as possible to IC Tx Series Resistance: Nominal series resistance recommended on Rx electrodes to reduce EMI coupling ESD Rating: Pins rated to high HBM ESD performance per JEDEC JEP155 Environmental & Qualification RoHS Compliance: Yes Lifecycle Status: Active production Package Package Type: QFN — Quad Flat No-Lead, twenty-pin Package Designation: QNR variant per Azoteq ordering suffix Mounting Method: Surface mount technology (SMT) Packaging Format Supply Format: Tape-and-reel Target Applications Remote control user interfaces Home automation device controls Wireless speaker and audio device interfaces Multi-button consumer appliance panels IoT device touch interfaces Industrial HMI panels with overlay #IQS7222B #IQS7222B102QNR #Azoteq #ProxFusion #IQSwitch #CapacitiveTouchController #MutualCapacitance #SelfCapacitance #ProximityController #MultiButtonHMI #TouchSensor #ATICalibration #SmartHMI #HomeAutomation #RemoteControl #WirelessSpeaker #IoTDesign #LowPowerSensing #QFN20 #SurfaceMount #EmbeddedHMI #EngineeringSpec #ComponentLibrary #CommonPartsLibrary #RoHSCompliant

Touchscreen Controller 2 Wire Capacitive I2C Interface 20-VQFN (3x3) The MTCH2120-V/REB specification defines the engineering requirements for a capacitive touch sensing controller integrated circuit designed for human-machine interface applications in embedded electronic systems. This specification establishes the functional, electrical, mechanical, environmental, and quality requirements necessary to ensure accurate touch detection, stable system performance, and reliable operation across consumer, industrial, and embedded environments. The device is intended for use in applications requiring touch-based user input such as control panels, interface buttons, and capacitive sensing surfaces. It provides robust sensing performance with immunity to noise and environmental variation, enabling reliable detection of touch events in compact and low-power electronic designs. Engineering Requirements The integrated circuit shall be manufactured using qualified semiconductor fabrication processes to ensure consistent sensing performance, low power consumption, and long-term operational stability. The device shall support reliable capacitive touch detection under defined electrical and environmental conditions without degradation of sensitivity or accuracy. The sensing architecture shall provide stable touch event detection with immunity to electrical noise, environmental interference, and parasitic capacitance variations. The system shall maintain consistent performance across intended operating conditions including temperature variation and supply voltage fluctuation. Electrical characteristics shall ensure stable digital communication, accurate sensing response, and reliable operation during startup, normal operation, and power transitions. The device shall maintain functional integrity during dynamic system conditions without false triggering or loss of sensitivity. Mechanical and package construction shall be suitable for surface-mount assembly and shall ensure robustness during soldering, handling, and long-term operation. Workmanship shall be free from defects such as contamination, cracks, bonding issues, or structural inconsistencies that could impact electrical or mechanical reliability. Inspection, validation, and testing shall be performed using controlled procedures and calibrated equipment to ensure compliance with all applicable engineering and quality requirements. Any deviation from this specification shall require formal engineering review, documented justification, and approval through established change control processes. Documentation Supporting documentation shall include official datasheets, reference design materials, electrical characterization reports, qualification data, inspection records, and revision-controlled manufacturing documentation. All documentation shall be maintained under formal configuration management and quality assurance systems to ensure traceability and consistency. Revision Control All modifications to this specification shall be managed through formal engineering change control procedures. Each revision shall undergo technical evaluation, validation, and approval prior to implementation to ensure continued compliance with design intent and applicable standards. #EngineeringSpecification #CapacitiveTouch #HMI #MicrochipTechnology #EmbeddedSystems #UserInterface #SensorIC #LowPowerDesign #ElectronicsDesign #QualityAssurance #EngineeringDocumentation

The ESP32-DevKitC is an official ESP32-based development board from Espressif Systems designed for rapid prototyping and IoT application development. It integrates an ESP32 module (such as ESP32-WROOM-32E or ESP32-WROVER variants), USB-to-UART programming interface, power regulation circuitry, reset and boot buttons, and access to most ESP32 GPIOs through dual-row headers. The board is breadboard-friendly and supports wireless connectivity, making it suitable for smart devices, industrial monitoring, home automation, wearable electronics, and embedded control systems. Key Features ESP32 Dual-Core Processor Xtensa® 32-bit LX6 dual-core MCU Up to 240 MHz clock frequency High-performance embedded processing capability. Wireless Connectivity Integrated 2.4 GHz Wi-Fi (802.11 b/g/n) Bluetooth Classic (BR/EDR) and Bluetooth Low Energy (BLE) support. Memory Typically includes 4 MB SPI Flash Some variants provide additional PSRAM for memory-intensive applications. Rich Peripheral Interfaces UART, SPI, I²C, I²S, SDIO ADC and DAC PWM outputs Capacitive touch sensing Pulse counter and timer peripherals. Extensive GPIO Access Most ESP32 pins are broken out to headers Supports digital I/O, interrupts, analog inputs, and communication interfaces. Development-Friendly Hardware USB-to-UART bridge for programming and debugging Dedicated EN (Reset) and BOOT buttons On-board 3.3 V regulator Breadboard-compatible layout. Flexible Power Options Powered through Micro-USB and onboard power circuitry Supports external power connections through header pins. #DevelopmentBoard