Nexvolt systems

Nominal Voltage(V): 9V
Battery Type: Zinc Carbon battery
Dimension: 26.5mm x 48.5mm x 17.5mm
System: Zinc Carbon
Discharge Resistance (Ohms): 620
Cut-off Voltage(V): 5.4
Discharge Tie: 270Hm, 9 Hrs
Jacket: Metal
Operating Temperature Range (deg. C): -20 to +85

• Standard SPP (Serial Port Profile) Bluetooth 2.0 module for simple wireless serial communication
• Can be configured as either Master or Slave device via AT commands
• Default baud rate of 9600 for data mode and 38400 for AT command mode
• Operates at 3.3V logic (5V power tolerant via onboard regulator), ensuring safe ESP32/Arduino integration
• Range of approximately 10 meters, ideal for wireless robot control or custom smartphone app interfacing

Connects to a 9V DC Battery
Contacts : Brass, Nickel Plate
Easy to connect and solder on boards
PVC insulated, Safe
Has two terminals, the black and red wire

• Controller : ATmega328P (SMD package)
• Operating Voltage: 5V
• Digital I/O pins : 14 (6 provide PWM output)
• Analog Input pins : 6 (10-bit resolution)
• Clock speed : 16 MHz
• Rugged hardware design ideal for beginners and rapid prototyping

• Dual-core Tensilica LX6 microprocessor (up to 240 MHz)
• Integrated Wi-Fi (802.11 b/g/n) and dual-mode Bluetooth (Classic and BLE)
• 520 KB internal SRAM and high-resolution analog inputs
• 34 Programmable GPIOs (Supports PWM, ADC, DAC, SPI, I2C, UART)
• Ultra-low power management ideal for battery-operated IoT projects

• Dual-core ARM Cortex M0+ processor (133 MHz)
• 264KB of SRAM, and 2MB of on-board Flash memory
• 26 multi-function GPIO pins
• 8 Programmable I/O (PIO) state machines
• Supports C/C++ and MicroPython

• Highly integrated Wi-Fi SoC with full TCP/IP stack
• 80MHz Tensilica 32-bit MCU core
• 3.3V Logic Level
• 11 Digital I/O pins (PWM/I2C/1-Wire supported)
• 1 Analog Input pin (10-bit ADC)
• Ideal for low-cost IoT projects and web servers

• ARM Cortex-M3 32-bit core running at 72MHz for high-speed processing
• 64KB Flash memory and 20KB SRAM for complex firmware applications
• Extensive I/O including 37 GPIO pins, 2x I2C, 3x USART, 2x SPI, and CAN interfaces
• Advanced analog capabilities with dual 12-bit ADCs (0-3.6V range)
• Highly popular "Blue Pill" compatible chip, perfect for stepping up from 8-bit Arduino projects

Ultra-compact ESP32-C3 mini development board
Built-in WiFi 2.4 GHz + Bluetooth 5 LE
RISC-V single-core 32-bit MCU
Pre-soldered header pins for instant prototyping
USB-C interface for power and programming
Supports ESP-IDF, Arduino, MicroPython
Low-power design suitable for battery-powered IoT
Multiple GPIOs with PWM, ADC, I2C, SPI, UART support
On-board RGB LED (varies by batch)
Ideal for compact IoT projects, wearables, and automation

The 1N4007 is the most commonly used rectifier diode.
Reverse Voltage: 1000V (peak)
Forward Current: 1A
Peak Forward Current: 30A
Reverse leakage current: 5uA

Operating Voltage: 4.7V to 5.3V
Operating Current 1mA (without backlight)
Can display (16x2) 32 Alphanumeric Characters
Custom Characters Support
Works in both 8-bit and 4-bit Mode

Specifications of 0.96" SSD1306 OLED Display:

Operating Voltage Range: 3.3V to 6V
Communication: I2C
Resolution: 128 x 64
Colour: Monochrome (Blue)
Driver IC: SSD1306
Supports both 5V and 3.3V Logic
Module Dimension: ~ 27 x 27 x 4.1 mm

LM555 features and specification

Features: -

555 is Capable of producing accurate time.
It could produce timing from microseconds to hours.
Could work in Astable or monostable operation.
The output duty cycle is Adjustable.
Could be used as PWM.
TTL compatible output can sink or source up to 200mA.

Specification: -

Footprint package : PDIP-8
Minimum Supply Voltage (V) : 4.5
Maximum Supply Voltage (V) : 16
No. of Timers/Counters : 1
Operating Temperature Range (°C) : 0 to 70
Mounting Type : Through Hole

It measures DC voltage in the ranges of 200 mV 2000mV, 20V, 200V and 1000V.
It measures DC current in the ranges of 200µA, 2000µA, 20ma, 200ma and 10A.
It measures AC voltage in the ranges of 200 V and 750 V.
It measures resistance in these ranges of 200, 2000 ohms, 20, 200 and 2000Kohms.
Transistor Hfe Measurement
Continuity Tester with Buzzer

4 x 3 Matrix Membrane Keypad
Adhesive mounting (sticker on the back side)
8 pin connector
centigrade
Flexible Circuit Length: Approx. 3.3 inch / 83 mm

Features:
Complete 9-in-1 sensor learning and prototyping kit
Easy-to-use sensors suitable for beginners and advanced users
Compatible with Arduino, Raspberry Pi, NodeMCU, AVR, PIC, and 8051
Supports motion sensing, gas detection, distance measurement, and light sensing
Ideal for DIY projects, robotics, automation, and STEM education
Specifications:
Sensor Kit Type: 9 in 1 Arduino Compatible Sensor Kit
Supply Voltage: 5V (Typical)
Number of Sensors: 9
Ultrasonic Sensor: HC-SR04 distance measurement sensor
Temperature & Humidity Sensor: DHT11
Motion Sensor: PIR Motion Sensor
Proximity Sensor: IR Sensor
Gas Sensor: MQ-2 Gas Sensor
Light Sensor: LDR Module
Sound Sensor: Sound Detection Module
Joystick Module: Dual-axis joystick with push button
Rain Sensor: Raindrop Sensor Module
Package Includes:
1 × PIR Motion Sensor
1 × IR Sensor
1 × DHT11 Temperature & Humidity Sensor
1 × Sound Sensor
1 × HC-SR04 Ultrasonic Sensor
1 × Joystick Module
1 × Rain Drop Sensor
1 × LDR Sensor
1 × MQ-2 Gas Sensor

Forward Voltage: 1.8V
Size: 5mm
Color: Yellow
5mm LED Applications:
Used as indicators in products and designs
Toys & Games
Lighting Products
Electronic projects

Forward Voltage: 1.8V
Size: 5mm
Color: Green
5mm LED Applications:
Used as indicators in products and designs
Toys & Games
Lighting Products
Electronic projects

Forward Voltage: 1.8V
Size: 5mm
Color: White
5mm LED Applications:
Used as indicators in products and designs
Toys & Games
Lighting Products
Electronic projects

Forward Voltage: 1.8V
Size: 5mm
Color: Red
5mm LED Applications:
Used as indicators in products and designs
Toys & Games
Lighting Products
Electronic projects

Forward Voltage: 1.8V
Size: 5mm
Color: Blue
5mm LED Applications:
Used as indicators in products and designs
Toys & Games
Lighting Products
Electronic projects

10 Separately Controlled LED's
High Brightness, High Intensity Red Output
Ideal for Meter Displays
Economically priced
Easy to Mount
LED Size: 2 x 5 mm

Evenly lighted segments
Common- Cathode Circuitry
Color : Red
Wide Viewing angle, ± 50 ° angle
Luminous intensity: 2800 to 9000 ucd
Wavelength: 612 to 625 nm
Typical forward voltage : 2V
Current Consumption : 30mA/segment
Peak Current :70mA
Package: 13mm

Specification of Laser Diode:

Maximum Operating Voltage: 3V
Operating Current: 45mA
Color: Red
Laser Pattern: Point

Evenly lighted segments
Common- Cathode Circuitry
Color : Red
Wide Viewing angle, ± 50 ° angle
Luminous intensity: 2800 to 9000 ucd
Wavelength: 612 to 625 nm
Typical forward voltage : 2V
Current Consumption : 30mA/segment
Peak Current :70mA
Package: 13mm

LM7805 is one of the most commonly used Positive Regulator in Electronic circuits
Specifications
Output voltage: 5v
Dropout voltage (Max): 2.5v @ 1A
Output Current: 1.5 A
Load regulation: 100 mv
Line Regulation: 50 mv
Maximum Operating Temp: 150 c
Minimum operating Temp: 0 c
Mounting Style: Through hole
Package: TO-220

Features of 74HC02 IC

The IC has six independent NOT gates
High speed – 19ns (Type) propagation delay
74HC04 delivers the output to any TTL device and microcontroller in TTL logic
The supply voltage range for IC is between 4.75V to 5.25. Up to 7V is possible and more than 7V can make IC burn easily.
IC 74HC04 can draw an output current of 8mA on each gate. It’s the max range, more could harm the IC.
It comes totally lead-free.
Operating Free Air Temperature Range 0°C to +70°C

Features of 74HC00 Quad 2-input NAND Gate IC

Implementation of NAND Function
Buffered inputs and Outputs
DC supply Voltage range : 2V to 6V
Operating Temperature : -40 to 125 °C

CD4001 IC Specifications

4 NOR gates present.
DIP Package
Operating Voltage Range 5-20V
Universal gate

Key Features:

Type: Quad 2-Input AND Gate
Package: DIP-14
Logic Family: 74HC (High-Speed CMOS)
Operating Voltage: 2V to 6V
Low Power Consumption: CMOS technology ensures low static power consumption
High-Speed Operation: Fast propagation delay
Wide Operating Temperature Range: -40°C to +85°C

Operating Voltage (VDC) : 3 ~ 12V
Shaft Length (mm) : 8.5
Shaft Diameter (mm) : 5.5
No Load Current (mA) : 40-180mA.
Rated Speed After Reduction (RPM) : 100
Rated Torque (Kg-Cm) : 0.35
Weight (gm) : 30
Dimensions in mm (LxWxH) : 70x35x22
Gearbox Shape : Straight

• Dual H-Bridge configuration for independent control of two DC motors or one bipolar stepper motor
• Wide motor supply range (5V to 35V) with peak output current of 2A per channel (continuous 1A recommended)
• Built-in 5V linear regulator (78M05) available to power logic circuits (requires motor supply < 12V)
• PWM (Pulse Width Modulation) compatible enable pins for precise motor speed control
• Heavy-duty heatsink included for robust thermal management during continuous operation

Operational Voltage: DC 5V
DC resistance of the winding： 50Ω±7% (25℃)
Diameter: 25mm
Step Angle: 5.625 x 1/64
Reduction Ratio: 1/64
Rated voltage of the motor： 5VDC
Number of Phases ： 4
Speed Variation Ratio ： 1/64
Stride Angle ：625° /64

Operating Voltage: 3V to 6V
No-load current: 350mA
RPM: 150 rpm.
Axial Length: 9mm
Shaft Diameter: 2mm

Specifications

Operating Voltage: 3V to 7.2V
Stall torque @4.8V: 1.2 kg-cm
Stall torque @6.6V: 1.6 kg-cm
Gear Type Plastic
Weight of Motor 9gms

TP4056 Module Specifications:

Input voltage : 4.5V ~ 5.5V
A full charge voltage: 4.2V
Power: 4.2 w
Charging accuracy: 1.5%
Charging indicator: micro LED
Input Interface: Micro USB port
Charging method: linear charge
Operating Temperature: -10 to +85ºC

TP4056 Module Specifications:

Input voltage : 4.5V ~ 5.5V
A full charge voltage: 4.2V
Power: 4.2 w
Charging accuracy: 1.5%
Charging indicator: micro LED
Input Interface: Type C
Charging method: linear charge
Operating Temperature: -10 to +85ºC

Glass cartridge body, nickel plated brass caps
Lead wire: Tin-lead plated copper, Diameter Ø0.8mm
5 x 20 mm cartridge size
Current Rating: 1A
Voltage Rating: 250V
T Speed Rating
Anti-surge
Low Breaking Capacity
Cylindrical in shape
Operating Temperature : -55°C to + 125°C

Type: 5x20 fast blow fuse kit
Current Rating: 500mA
Voltage Rating: 250V
Fuse Type: Cartridge, Glass
Standard 5×20mm fuse

Type: 5x20 fast blow fuse kit
Current Rating: 2mA
Voltage Rating: 250V
Fuse Type: Cartridge, Glass
Standard 5×20mm fuse

• 830 Total tie points (630 terminal strip, 200 power distribution)
• Standard 2.54mm (0.1") pitch compatible with most DIP ICs and modules
• Dual interlocking power rails on both sides for clean 5V and 3.3V routing
• Self-adhesive backing for secure mounting to robot chassis or acrylic bases
• Completely solderless design built for rapid, reusable hardware prototyping

• Ultra-compact design, ideal for micro-hydroponics, small fountains, and cooling systems
• Safe submersible operation (IP68 rated) powered by standard 3V to 6V DC
• Capable of pushing water up to 80cm (head) with a flow rate of up to 120 liters/hour
• Quiet, brushless motor construction for long operational life and low power consumption
• Easily driven via standard motor drivers (like L298N) for automated, micro-controlled watering projects

Highly Reliable 1K ohm Resistor
±1% Tolerance
Power Rating: 0.25W
Package: Axial
Mounting Feature: Through-hole
Composition: Carbon Film Type
Excellent Heat and Humidity Withstand Performance

Highly Reliable 10K ohm Resistor
±1% Tolerance
Power Rating: 0.25W
Package: Axial
Mounting Feature: Through-hole
Composition: Carbon Film Type
Excellent Heat and Humidity Withstand Performance

Highly Reliable 220 ohm Resistor
±1% Tolerance
Power Rating: 0.25W
Package: Axial
Mounting Feature: Through-hole
Composition: Carbon Film Type
Excellent Heat and Humidity Withstand Performance

Input/Trigger voltage: 5V
Current consumption: 20mA maximum
AC load voltage: upto 250V
DC load voltage: upto 30V
Load current: upto 10A
Status Indicator LEDs

6-DOF Gyro & Accelerometer. Ideal for custom PID controllers and balancing robots.

• Adjustable detection range (2cm to 30cm) via onboard potentiometer
• Digital output (HIGH/LOW) for easy microcontroller interfacing
• Built-in LM393 comparator for stable threshold detection
• Operating voltage: 3.3V to 5V (Arduino & ESP32 compatible)
• Ideal for line followers, obstacle avoidance, and simple proximity detection

• High-precision distance measurement from 2cm up to 4.5m with 3mm accuracy
• 5-pin design (VCC, Trig, Echo, OUT, GND) featuring a dedicated OUT pin for standalone switching applications
• Operating voltage of 5V DC with ultra-low standby current (<2mA)
• Reliable acoustic non-contact detection that is unaffected by object color or sunlight
• Perfect for autonomous navigation, drone altitude hold, and advanced obstacle avoidance robotics

Two independent Potentiometers - one for each axis ( X and Y)
Auto return to center position
Cup-type Knob
Internal Potentiometer value: 10k
2.54mm pin interface leads
Dimensions: 1.57 in x 1.02 in x 1.26 in (4.0 cm x 2.6 cm x 3.2 cm)

This flame sensor or fire sensor module works on the concept that when a flame or fire is burning it emits IR signals.
This IR signal is then received by the IR receiver on the fire sensor module to detect the flame or fire.

Operating Voltage is +5V
Analog output voltage: 0V to 5V
Digital Output Voltage: 0V or 5V (TTL Logic)
Preheat duration 20 seconds
Can be used as a Digital or analog sensor
The Sensitivity of Digital pin can be varied using the potentiometer

185 mV/A output sensitivity
5.0 V, single-supply operation
Output voltage proportional to AC or DC currents
Factory-trimmed for accuracy
Extremely stable output offset voltage
Nearly zero magnetic hysteresis
Analog Output so can be easily connected to any Microcontroller

Operating voltage (Vcc): 3.3V to 5V
Analog Output voltage: 0 to 4.2V@ Vcc = 5V
Digital Output Voltage: 0V or 5V @ Vcc=5v
Current consumption: 32mA

Working voltage 5V
Output format: Digital switching output (0 and 1), and analog voltage output AO
Potentiometer adjust the sensitivity
Uses a wide voltage LM393 comparator
Comparator output signal clean waveform is good, driving ability, over 15mA
Anti-oxidation, anti-conductivity, with long use time
With bolt holes for easy installation

5mm LDR Specification:

Disc Diameter: 5mm
Light Resistance: 5-10k Ohm
Dark resistance: upto 500k Ohm
Maximum Operating Temperature: +800 degree Celsius
Type of Mounting: Through Hole(PTH)

This float sensor acts like a switch, thus not having polarity and can be used in either directions.

Specifications and Features:
Length of the contact cable: 30.5(cm)
Type of Sensor : Magnetic reed based Float Sensor
Maximum Load : 50 W
Max Switching Voltage : 100V DC
Maximum Switching Current : 0.5 A
Max Contact Resistance : 0.4 Ω
Temp Rating: -20~ 80 degree
Material: High Quality Plastic Based

Specifications
SW-420 based sensor, normally closed type vibration sensor
Supply voltage: 3.3V-5V
On-board LM393 Comparator IC
The comparator output sensitivity can be changed with the help of a potentiometer.
Output form: digital switch output (0 and 1)
On-board indicator LED to show the results
Has a fixed bolt hole for convenient installation

Operating voltage: 1.7V to 3.6V
Maximum Current: 1.12mA
Temperature range: -40 to +85 deg.C
Pressure range: 300hPa to 1100hPa
Output: SPI and IIC protocol

Water Level Depth Sensor Module Specifications:
Working Voltage : DC 3-5V
Working Current : <20mA
Sensor Type : Analog
Detection Area : 40 mm x 16 mm
Size : 65 mm x 20 mm x 8 mm
Humidity: 10% -90% non-condensing

This LM393 module works perfectly when you monitor sound. The microphone captures the audio waves and compares it using the LM393 comparator IC. The sensitivity of the digital output pin can be adjusted using the on-board potentiometer.
The specifications of the LM393 sound sensor module are:

Note: Product may be differ from the picture shown here.

Operating Voltage: 3.3V to 5V
Output: digital
Comparator IC: LM393

TTP223 Module Specifications:

Operating Voltage: 2V to 5.5V
No. of channel: 1
Output high: 0.8*Vcc
Output low: 0.3*Vcc
Response time: 220mS
Trigger setting mode: (1- > Short ; 0- > No Short)
AB=00:No-lock High TTL level output
AB=01:Self-lock High TTL level output
AB=10:No-lock Low TTL level output
AB=11:Self-lock Low TTL level output

Specification: -

Operating Voltage (VDC): 4 ~ 28V
Max. Operating Current (mA): 3
Detecting Range: 5-9m
Transmitting Power : 20mW (typical); 30mW (max)
Output Voltage(V) : 3.2 ~ 3.4
Output Voltage Driving Capacity : 100mA
Trigger Way : Repeat Trigger
Output Control Low Level : 0V
Output Control High Level : 3.3V
Operating Temperature (°C) : -20 to 80
Adjustable Block time and distance
Penetrating detection capability, compared with the traditional infrared feeling PIR.

Specifications
Supply Voltage 5V
Output 3.3V TTL Logic
Infrared Sensor with Control Circuit Board
The Sensitivity and Holding Time Can be Adjusted
Can cover 120° and 7m range
Low power consumption 65mA
Temperature Range -20°C to 80°C

Type: normally open
Rated load: DC 12V 50mA
Contact resistance: m0.03 Ohm
Insulation resistance: 100M Ohm
Temperature: -30 to +70 degree Celsius
Withstand voltage: AC 250V

This is Small PCB Mountable 5V Passive Buzzer.
Features :
Input Voltage(Max.) : 5V
Resistance: 42 Ω
Resonance Frequency: 2048 Hz
Body Size : 12 x 8mm
Pin Pitch: 6mm
External Material: Plastic;
Color: Black

Specifications

Small signal N-Channel MOSFET
Continuous Drain Current (ID) is 49A at 25°C
Pulsed Drain Current (ID-peak) is 160A
Minimum Gate threshold voltage (VGS-th) is 2V
Maximum Gate threshold voltage (VGS-th) is 4V
Gate-Source Voltage is (VGS) is ±20V (max)
Maximum Drain-Source Voltage (VDS) is 55V
Available in To-220 package

Standard USB Type-A to USB Mini Type-B Arduino Programming cable that could be used to program Arduino Nano boards.

1 x 20cm male to female breadboard connecting wires
Easy to plug in
Durable, Flexible
Multiple Colours

Compatible with the PC (USB Type-A to USB Type-B)
Molded strain relief and PVC over-molding to ensure a lifetime of error-free data transmissions.
Aluminum under mold shielding.
Foil and braid shield to reduce EMI/FRI interference.