TTGO T-Call V1.4 ESP32 SIM800L Wireless Communication Module You're looking at an unsoldered TTGO TCall ESP32 SIM800L module with a SIM antenna and SIM card slot. This module is a wireless communication module that connects any microcontroller to your WiFi network via the ESP V1.4 ESP32 Serial WIFI Wireless Transceiver Module. The ESP32 module is a self-contained SOC with a built-in TCP/IP protocol stack. Because of its solid inbuilt processing and storage capabilities, this module can be quickly connected with sensors and other application-specific devices, with little programming and runtime loading. The TTGO T-Call combines an ESP32 development board and a SIM800L GSM/GPRS module. This combo offers wireless communication via the ESP32's WiFi and Bluetooth capabilities, as well as the SIMCom SIM800L GPRS module. Notably, the board's power and programming ports are USB-C rather than micro USB. Whether you need to get warnings when someone enters your room or remotely water your plants, the ESP32 with SIM800L GSM/GPRS Module can prove quite useful. The SIM800L's tiny size and adaptability make it an excellent choice for a variety of IoT projects. Why is this Wireless Communication Module best for IoT applications? The ESP32-based wireless communication module is best for IoT applications because it consists of a USB Type C pluggable board that has an onboard LiPo Battery Charging Circuit & Connector. Features: The ESP32 chip, which has a dual-core 32-bit LX6 CPU, is coupled with the SIM800L wireless communication module. It has a Type C connector and requires a 5V/1A power source. This module supports Bluetooth v4.2BR/EDR and BLE standard protocol in addition to 802.11 b/g/n wifi. The SDK for user firmware development and cloud server development is supported by this wireless communication module. Applications: IoT Data Monitoring. Remote Sensing. Security Systems. Smart Home Automation. Environmental Monitoring. Asset Tracking. Remote Control Systems. Emergency Response Systems. Fleet Management. Industrial Automation. Pinout:

LJ12A3-4-Z/BX NPN DC5-36V 4mm Normally Open Tube Type Inductive Proximity Sensor Switch This LJ12A3-4-Z-BX-NPN DC 5-36V Inductive 4mm NPN-NO Proximity Sensor Switch also known as Approach Sensor is a component widely used in the automatic control industry for detecting, controlling, and non-contact switching. When the proximity switch is close to some target object, it will send out a control signal. When the metal approaches near-proximity switch sensing area, an Edy Current is induced in metal. Which in turn disturbs the magnetic field produced by the Inductive Proximity Sensor. This change is sensed by the sensor. These inductive proximity switches can be non-contact, have no pressure, no spark, and quickly issue the electrical command. Accurately reflect the position and stroke movement mechanism. Positioning accuracy, operating frequency, service life. Easy to install and suitable for harsh environments. This 4mm proximity sensor can detect a variety of metals, miniature size, long life, low price, shielded type installation, anti-interference ability, 1mm detection distance, used for precise positioning of molds, precision machine tools, and robots. Applications: It is widely used in machines, paper making, light industry for limiting stations, orientation taking count, speeding trials, etc. Used in the automatic control industry for detecting, controlling, and noncontact switching. Read our blog Proximity Sensor Types where we explained what is a proximity sensor, different types of Proximity Sensors, and their working principle.

Tweezer Tweezers have sharp tips and made of metal. Generally used for removing, holding and repairing delicate components like IC, Resistors, Cable etc. Non magnetic tweezer which can be used to hold small size SMD components while soldering.

u-blox ZED-F9P Dual-band GNSS RTK SMA Modem - 7Semi The 7Semi u-blox ZED-F9P Dual-band GNSS RTK SMA Modem is a high-precision positioning module engineered for demanding applications like UAV navigation, surveying, robotics, and industrial automation. Powered by the u-blox ZED-F9P chipset, it delivers centimetre-level accuracy using multi-band RTK technology and supports all major GNSS constellations (GPS, GLONASS, Galileo, and BeiDou). With dual-band reception, moving base functionality, and PointPerfect support, it ensures fast, stable, and reliable positioning—even in dynamic or obstructed environments. The compact form factor, low power consumption, and SMA antenna interface make it easy to integrate into precision-guided systems across smart agriculture, automated vehicles, and real-time kinematic networks. 7Semi u-blox ZED-F9P GNSS Module Pinout Features Centimetre-Level Accuracy with dual-band RTK for real-time precision positioning Supports GPS, GLONASS, Galileo & BeiDou for robust multi-constellation reception Moving Base Support for dynamic tracking, where both base and rover are in motion Multiple Interfaces including USB-C, UART, I2C, SPI, and Qwiic, for easy integration Survey-In Base Mode with RTCM 3.x correction output for a reliable RTK reference Low Power & Compact Design is ideal for embedded systems and portable devices Customizable Settings with up to 20Hz updates, geofencing, and advanced RTK configs Onboard Coin Cell Backup preserves satellite data and config for faster restarts

Ublox Neo-6M GPS Module With EEPROM The new NEO 7 series includes the Ublox Neo-6M GPS Module with EEPROM. This module is very sensitive and uses little power, giving you accurate location updates at a rate of 10Hz. It works well with Arduino, so you can get precise GPS data. It also comes with an external GPS antenna and UART TTL interfaces, plus an internal rechargeable battery for quick starts and faster GPS lock. This UBLOX NEO-6M GPS module can save settings to EEPROM so that you do not lose your configurations. The UFL connector simplifies connecting the GPS antenna, and the built-in ceramic antenna helps in satellite detection. The power and signal lights let you know how the module is doing. With a backup battery, your data stays safe even if the power goes out. The 3mm mounting holes make it simple to attach to your aircraft, allowing for smooth flying, automatic return home, and waypoint navigation. You can also use this UBLOX GPS module in smart robot cars to help them navigate, turning them into smart bots. Best of all, it works with the Ardupilot Mega v2 flight controller, so you can expand what your project can do! NOTE: This UBLOX GPS receiver Module is NOT COMPATIBLE with APM 2.8 FLIGHT CONTROLLER. Features: 5Hz position update rate Operating temperature range: -40 TO 85°CUART TTL socket EEPROM to save configuration settings Rechargeable battery for Backup The cold start time of 38s and the Hot start time of 1s Supply voltage: 3.3 V Configurable from 4800 Baud to 115200 Baud rates. (default 9600) SuperSense ® Indoor GPS: -162 dBm tracking sensitivity Support SBAS (WAAS, EGNOS, MSAS, GAGAN) Separated 18X18mm GPS antenna Read our blog about Interfacing GPS Module with Raspberry Pi Pinout: Applications: Connectivity between machines Industrial tanks Agricultural irrigation systems Manufacturing robotics check out : L80 GPS Shield

UNI-T UT33D Multimeter While there are many other items of test equipment that are available, the multimeter is able to provide excellent readings of the basic measurements of amps, volts and ohms. Features: Measurement Functions: AC/DC voltage, DC current, resistance, diode, and continuity testing. Non-Contact Voltage Detection (NCV): Allows for safe detection of live wires without direct contact. Display: Clear LCD display for easy reading. Design: Compact and lightweight, making it portable and easy to handle. Safety: Designed to work safely in CAT II 600V environments. Durability: Can withstand a 2-meter drop. Additional Features: Loud buzzer for continuity testing and a protective cover with a test lead hanging groove. Applications: Electronics: Ideal for testing and troubleshooting electronic circuits, components, and devices. Automotive: Useful for diagnosing electrical issues in vehicles, measuring battery voltage, and testing sensors. Home Maintenance: Handy for homeowners and DIY enthusiasts working on electrical projects around the home. Educational: Great for teaching students about electrical measurements and circuit analysis. Industrial: Suitable for maintenance and troubleshooting in industrial environments. HVAC: Useful for heating, ventilation, and air conditioning technicians to measure electrical parameters.

USB Charger Doctor for Voltmeter and Ammeter Use the USB Charger Doctor to measure the working voltage and current output for any USB port and project. This blue plastic dongle plugs between a USB device and passes the data lines through. There’s a 0.05-ohm resistor in line with the power pin that is used to measure the current draw. The tester uses a new generation of power four and a half double integral cycle conversion IC, with a precision bandgap reference, range accuracy, high precision, stable and reliable performance, strong anti-interference ability, high temperature can be used for measuring USB powered or power consumption of an interface, cell phone chargers, U disk, and other products. The USB Charger Doctor measures the working voltage and current output for any USB port and project. This blue plastic dongle plugs between a USB device and passes the data lines through. There’s a 0.05-ohm resistor in line with the power pin that is used to measure the current draw. The Doctor’s digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones. You can use this device from the 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It flips between voltage and current readouts every 3 seconds or so. It’s a very handy tool for testing USB devices, checking load levels, and debugging battery chargers and boost converters. It’s a little chunkier but more numerical than our USB Power Gauge Mini-Kit. It’s also not open source so check out the USB Power Gauge mini kit if you want to hack together your own power gauge indicator. This product is known as 0.28inch 0-100V Three Wire DC Voltmeter Red, 3 Wire LED Voltmeter, Ammeter, Charger Doctor, DC Voltmeter, Doctor, LED Display, Red LED Display, Three Wire DC Voltmeter Red, USB Charger, USB Charger Doctor, Voltmeter, Voltmeter

USB to UART ESP-01 CH340 Programmer The USB to UART/ESP8266 Adapter Programmer for ESP -01 WiFi Modules with CH340G Chip converts the signal from a USB interface to a PC / laptop to match a serial module ESP8266. ESP-01 serial wifi module can be directly plugged into the yellow pin header without any connecting wire. This converter module has a CH340 chip which is reliable and high-performance. It is compatible with most Windows systems. The adapter features integrated capacitors to maintain a current of 1000 ?F. Applications: Water heater thermostat. Smart card equipment. Wireless communication

V3 Version 863MHz-928MHz SX1262 ESP32 WIFI Bluetooth Lora with 0.96 OLED Display The ESP32 LoRa SX1262 0.96 Inch OLED Display Bluetooth WiFi Module for Arduino is a new development of the cost-effective networking program. The ESP 32 WiFi LoRa is a classic IoT dev-board designed & produced by Heltec Automation. Since its launch in 2017, it has been loved by developers and makers. The newly launched V3 version has the same pin sequence as the V2 version and retains Wi-Fi, BLE, LoRa, OLED display, and other functions. This loRa module has Onboard 32MByte Flash, Wi-Fi antenna, 0.96-inch blue OLED display, lithium battery charging circuit and interface, CP2102 USB to serial chip, the perfect support for Arduino development environment, can be very simple and fast for program verification and product development. It is the best option for smart cities, farms, homes, industrial control, house security, wireless meter reading, and IoT developers. check out : MKS TFT-WIFI V1.0 ESP8266 WIFI Module Pinout: Pinout Of V3 ESP32 WIFI Bluetooth Lora With 0.96 OLED Display

VAR Tech - V830A Multimeter A multimeter or a multitester, also known as a VOM (volt-ohm-milliammeter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter can measure voltage, current, and resistance. Analogue multimeters use a microammeter with a moving pointer to display readings.