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Compatible with Li-ION 3.7V batteries (18650, 14500)Overcharge detection at 4.25 ± 0.05V and over-discharge detection at 2.54 ± 0.1VBuilt-in overcurrent protection (4A)Working current of 5A for stable performanceCompact design with a size of 3.2 × 0.4 × 0.2 cmLightweight at only 1 gram for easy integration
Over charge detection voltage: 4.3±0.05VOver discharge detection voltage: 2.5±0.1VOver current detection voltage: 0.015±0.03VSuitable for: 18650 Li-Ion batteryOver current detection current: 2～6A
High sensitivity IR receiverExtremely sensitive to wave between 760-1100nmPower supply indicator lampComparator output indicator lampOperating voltage of this sensor is 3.3V to 5VAnalog quantity output
Detects multiple gases including NH₃, NOx, alcohol, benzene, smoke, and CO₂Output voltage varies with gas concentrationDetection range: 10 to 1000 ppmAdjustable sensitivity via onboard potentiometerBuilt-in signal output indicator LEDLow-cost solution for air quality monitoring
Operating Voltage is +5V.Used to detect LPG, Alcohol, Propane, Hydrogen, CO, and methane.Used as a Digital or analog sensor.Sensitivity of Digital pin can be varied using the potentiometer.Have a long life.It has a Simple drive circuit.
The module operates with an input voltage range of 2V to 5.5V DC, making it compatible with a wide variety of low-power systems.It offers a fast response time of approximately 60 ms in fast mode and around 220 ms in low-power mode when operating at VDD = 3V.Sensitivity can be adjusted by modifying the external capacitance within a range of 0 to 50 pF, allowing fine-tuning based on application needs.The module enables stable touch detection of the human body, making it a reliable replacement for traditional mechanical switches.It supports both direct mode and toggle mode, which can be selected via the TOG (toggle) pin.After powering on, the module requires a stabilization period of approximately 0.5 seconds. During this time, the touch function remains inactive and the keypad should not be touched.It features automatic calibration, with a re-calibration cycle of about 4 seconds when no touch input is detected, ensuring consistent performance over time.
The LM393-based rain sensor module uses a wide voltage comparator to provide both digital and analog outputs.Nickel-plated surface ensures resistance to oxidation and improved electrical conductivity for longer life.The comparator output delivers clean signals with strong driving capability (>15mA).Includes potentiometer for sensitivity adjustment and mounting holes for easy installation.Features an onboard LED indicator for output status.Compatible with Arduino and other microcontroller platforms.
Detects light intensityAdjustable sensitivityDigital output: 0V to 5VLED indicators for power and outputStable with LM393 chipEasy to install
The 2.2K Ohm resistors are helpful for students performing their engineering projects.It is an essential component for prototyping and DIY projects. The resistor is made of carbon film material.
The 1K Ohm resistors are helpful for students performing their engineering projects.It is an essential component for prototyping and DIY projects. The resistor is made of carbon film material.
The 470 Ohm resistors are helpful for students performing their engineering projects.It is an essential component for prototyping and DIY projects. The resistor is made of carbon film material.
The 330 Ohm resistors are helpful for students performing their engineering projects.It is an essential component for prototyping and DIY projects. The resistor is made of carbon film material.
The 100-ohm resistors are helpful for students performing their engineering projects.It is an essential component for prototyping and DIY projects.±1% Tolerance availableThe resistor is made of carbon film material.
Operates within a voltage range of 3.3V to 5VDual output mode for improved accuracy in soil moisture detectionBuilt-in mounting hole for easy and secure installationIncludes a power indicator (red) and digital output indicator (green)High-sensitivity probe for precise soil moisture sensingEquipped with an LM393 comparator for stable performanceDigital output (D0) can be directly interfaced with a microcontroller for moisture detection
Pyroelectric PIR sensor for precise motion detectionEnergy-efficient PIR motion sensor suitable for home and commercial useWorks on 4.5 ~ 20V DC with low currentAdjustable delay (3s to 5min)Ideal for security, lighting, energy-saving systemsCompatible with Arduino, Raspberry Pi, AVR, PIC, and 8051
Detects objects within a range of 2cm to 30cmEasy to set up and use for all skill levelsOnboard indicator shows when obstacles are detectedAdjustable range with a preset knob for precisionIdeal for IoT projects like smart homes and security systems
The Operating Voltage of the DHT-11 Humidity And Temperature Sensor Module is 3.3VDC to 5.5VDCDHT11 sensor is good for 20-90% humidity readings.The module can detect the surrounding environment of the humidity and temperatureThe Module is highly reliability, excellent long-term stability and Low power consumption.
Non-Contact Distance Sensor: HC-SR04 Ultrasonic Range Finder measures 2–400cm and is suitable for various applications, making it the best distance measuring sensor 2cm to 400cm
The ESP32-CAM is an Original ESP32 CAM WiFi+Bluetooth module board along with OV2640 or RHYX-M21-45 Camera Module. This product is based on the ESP32 chip with the additional facility of using a camera. That means, the features of ESP32, especially the Bluetooth and the WiFi connectivity is available along with an additional peripheral OV2640 camera module. This opens up a lot of applications and usage in the field of various IoT applications. For the camera spec, it is a very small sized camera yet powerful that can be used with minimum system supports. It is available in a ribbon cable formation. The camera is powered by an UXGA resolution of 1600 x 1200 resolution with 2.0 Megapixel resolution. It is a good choice for most of the camera based IoT applications.Disclaimer: This ESP32 Camera Development Board will come with either the OV2640, OV3660 or the RHYX-M21-45 camera module, depending on availability. Both variants are compatible with the board and offer similar performance.
Microcontroller: Atmega328POperating Voltage: 5VArchitecture: AVRInput Voltage (recommended): 7-12V14 Digital Pins and 8 Analog Pins
ESP Chip Set: ESP32-WROOM 32USB Chip Set: CP2102Operating Voltage: 3.3VFlash Memory: 4MB, 32MbitSupply Voltage: 5VDCNo of GPIO: 30
The Arduino Uno is an ideal starting point for learning electronics and programming. If you’re new to this platform, it offers a reliable and beginner-friendly experience. Among all Arduino boards, the Uno is the most widely used and well-documented, making it especially easy to learn and experiment with.
