All-in-one GSM, GPRS, and GPS module based on SIM808 chipset. Supports global Quad-Band (850/900/1800/1900 MHz) 2G connectivity. Enables SMS, call, GPRS data, and GPS tracking functions in one board. Compatible with Arduino, Raspberry Pi, and other microcontrollers. Integrated GPS receiver (MT3337) for precise location tracking (165 dBm). Low power...

Wearable e-textile technology.  Designed with large sew tabs Button Board

Supports Digital terrestrial video and radio program recording (records digital terrestrial TV on PC or Laptop).  The included Input Terrestrial Antenna will offer stable TV signal.   Supports Real Time digital video recording and broadcasting.   Supports Watching DVB-T digital TV and listen to DAB and FM radio. Full DVB-T bandwidth reception (at 6 / 7 /...

Supply voltage: 6V-15V Chip: X9C103S Dimensions : 28 x 14 x 4 (LxWxH) mm. RoboticsBD 10K span potentiometer. Potentiometer center tap between the 0-10k slide in total 100 (potentiometer wiper typical impedance 40 ohms)

Expansion board for A4988 / DRV8825 stepper motor drivers Designed for 42 stepper motors, 3D printers, and CNC machines On-board DIP switches for easy microstep adjustment Supports 12V–24V input with terminal power connector Compact and stable design for reliable performance Ideal for DIY electronics, robotics, and motion control projects

Wearable e-textile technology.  Designed with large sew tabs Slide Switch

Low Level Trigger Relay Module. RoboticsBD Two separate LEDs for On/Off indication of the Relay. Triggering input voltage 3.3V – 5V Two separate LEDs for On/Off indication of the Relay Triggering input voltage 3.3V – 5V 4) Back EMF protection Back EMF protection 2 LEDs to indicate when relays are ON. Works with logic level signals from 3.3V or 5V devices...

PWM signal generator module based on TL494 IC for adjustable frequency and duty cycle control. Generates 5V PWM output with frequency range 500Hz to 100kHz. Operates on a wide input voltage range (7V–40V DC). Adjustable duty cycle and dead time for fine waveform tuning. Compact 26×23mm module, ideal for embedded and automation applications. Perfect for...

Active Buzzer Alarm Module for Arduino with easy-to-control functionality Operates on 3.3V-5V DC and provides a continuous sound when powered Built-in 8550 transistor drive for stable performance Ideal for alarm devices, timers, and user input confirmations Compact design with fixed bolt hole for easy installation

No. of Channel: 4 Trigger Voltage: 5VDC Triode drive, increasing relay coil High impedance controller pin Pull-down circuit for the avoidance of malfunction Power supply indicator and Control indicator lamp Power supply and relay instructions, lit, the disconnect is off; The input signal, signal, common Terminal and start conducting; RoboticsBD Note:...

The AD5693R is a high-precision 16-bit digital-to-analog converter (DAC) with an I2C interface and an internal temperature-compensated voltage reference. This breakout module is designed for applications requiring accurate and stable analog voltage output, suitable for embedded systems, instrumentation, and control projects.

4-20mA to Voltage Converter Module for PLC analog inputs Wide supply range 7V–30V DC for industrial systems Selectable outputs: 0–2.5V, 3.3V, 5V, 10V, 15V Adjustable zero and full-scale calibration via potentiometers Reliable insulation design for stable signal conditioning Compact 33mm × 25mm module for control panels

Industrial Grade USB to RS422 Converter for stable data communication Built-in CH340 chipset for reliable and fast transmission Converts USB interface to RS422 for industrial equipment Durable transparent blue enclosure for protection and visibility Wide compatibility with PLC, CNC, LED displays, and control systems Ideal for automation, industrial...

Expansion baseboard for 38-pin ESP32-S modules (both 0.9" and 1.0" wide versions). Provides full I/O pin access with power (3.3V/5V selectable) and ground for each signal pin. Supports three power input options: USB Micro-B, USB Type-C, or 6.5–16V DC barrel jack. Includes reverse current protection, status LED, and mounting holes for secure installation....

Compact Stereo Enclosed Speaker with 3W power and 8Ω impedance Delivers clear audio with less than 10% distortion for quality sound output Features a handy 42 cm JST 2PH input cable for easy connection Enclosed design ensures good audio volume and durability Perfect for audio projects, displays, and compact sound applications

Onboard 8 key TTP226 capacitive touch induction IC. RoboticsBD Onboard 8-way level indicator. Working voltage: 2.4 to 5.5 V. Modules, you can set the output mode, key output mode, the longest time and fast/low power output

This Schumann wave generator produces an ultra-low frequency electromagnetic pulse based on the Schumann resonance range. It is designed for use in indoor environments and operates silently without producing audible sound. The device is powered via a Type-C USB connection and works immediately after being plugged in, with no configuration required.

The ADS1115 is a high-accuracy 16-bit analog-to-digital converter (ADC) with an integrated programmable gain amplifier. It supports four single-ended inputs or two differential inputs and communicates over I2C. This module is suitable for precision voltage measurement in embedded systems, data acquisition, and sensor interfacing applications.

Easily interface different voltage logic devices with the 8-Channel Bi-Directional I2C Logic Level Converter Module. Designed for seamless communication between 1.8V, 2.8V, 3.3V, and 5V systems, this compact module provides reliable voltage shifting for up to 8 independent data lines. Whether you're working with microcontrollers, sensors, or communication...

Quectel EC800K-EU 4G IoT CAT1 Module for reliable LTE Cat 1 bis connectivity High-speed data rates up to 10Mbps downlink / 5Mbps uplink Ultra-compact LGA form factor (17.7mm × 15.8mm × 2.4mm) Supports USB, UART, SIM, and GPIO interfaces Remote DFOTA firmware update support for easy maintenance Wide operating temperature range -40°C to +85°C for industrial...

Industrial Grade USB to RS485/RS232 Converter for stable serial communication Integrated CH340 chipset for fast and reliable data transfer Supports both RS485 and RS232 interfaces in one device Durable transparent blue industrial casing Ideal for PLC, CNC, automation, and control systems Plug-and-play solution for upgrading legacy serial devices

Wearable e-textile technology.  Designed with large sew tabs LED White Color

ENC28J60 Ethernet Module HanRun HR911105A Ethernet port 5V supply voltage 100% Genuine ENC28J60 Chipset, compatible with Arduino etc. 25MHz Crystal. Standard HanRun HR911105A Ethernet Interface. RoboticsBD

The TCXO-9 is a temperature-compensated crystal oscillator module designed to improve frequency stability in compatible amateur radio transceivers. Operating at 22.625 MHz, this module is a direct replacement for the standard crystal used in radios such as FT-817 / FT-857 / FT-897 series.

The IOBIT V2.0 Expansion Board is a compact, fully-featured breakout board designed for the BBC micro:bit, ideal for DIY electronics and small-scale robotics projects. It extends all IO pins of the micro:bit and adds enhanced features like an on-board buzzer, 3.5mm audio jack, 5V output support, and LEGO-compatible mounting holes, offering increased...

The PCA9306 Bidirectional I2C Bus/SMBus Voltage Level Converter is a versatile and compact dual-channel translator designed to bridge communication between devices operating at different voltage levels. It supports seamless bidirectional voltage translation between I2C or SMBus systems without the need for a direction control pin. Ideal for mixed-voltage...

The A259 SIM800 GSM GPRS Module is an all-in-one wireless communication solution designed for GSM voice calling, SMS messaging, and GPRS data transmission. With a wide input voltage range from 6V to 24V, the module is ideal for integration into various embedded systems. It is compatible with 3.3V and 5V TTL logic levels, making it an excellent fit for...

Industrial USB to TTL Serial Converter Cable – DTECH IOT6554 Original FT232 chipset for stable, high-speed communication Selectable 3.3V / 5V TTL level output Supports 300bps to 3Mbps baud rate 6P header (TXD, RXD, GND, VCC, RTS, CTS) Multi-system support with built-in TX/RX indicator LEDs

Compact 3W 8Ω mini speaker with JST-PH2.0 2-pin interface for easy integration. Full-range frequency response (500Hz–20kHz) delivers clear and balanced sound. Built-in internal magnetic circuit ensures stable performance and durability. Compact rectangular design (31×28×15mm) with non-paper diaphragm for reliability. Widely compatible with Arduino,...

Wearable e-textile technology.  Designed with large sew tabs LED Yellow Color