N.H Electronics

Easy Way

New Leader 9v Extra Heavy Duty

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Active Buzzer 5V

A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric (piezo for short). It is an electrical device that is used to get a buzzing or beeping sound when a potential difference is created or voltage is applied. It is a sounding device that can convert audio signals into sound signals. It is usually powered by DC voltage. Typical uses of buzzers and beepers include alarm devices, timers, and confirmation of user input such as a mouse click or keystroke.

▪ Input Voltage(Max.) : 5V
▪ Resistance: 90 Ω
▪ Resonance Frequency: 2048 Hz
▪ Sound pressure(dB(A)/10cm)min.: 80
▪ Body Size : 12 x 9.5mm
▪ Pin Pitch: 6mm
▪ External Material: Plastic;
▪ Color: Black

Applications –
▪ Communication Devices.
▪ Electronics used in Automobiles.
▪ Alarm Circuits.
▪ Portable Devices.
▪ Security Systems.
▪ Timers.
▪ Household Appliances.
▪ Electronic Metronomes.

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Resistor 1/4watt

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L293D Motor Control Shield for Arduino

The L293D is a monolithic integrated, high voltage, high current, 4-channel driver.Basically this means using this chip you can use DC motors and power supplies of up to 36 Volts, thats some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what’s known as a type of H-Bridge. The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor.

Features:
▪ Brand new and high quality.
▪ L293D is a monolithic integrated, high voltage, high current, 4-channel driver.
▪ Basically this means using this chip you can use DC motors and power supplies of up to 10 Volts, thats some pretty big motors and the chip can supply a maximum current of 600mA per channel, the L293D chip is also what’s known as a type of H-Bridge.
▪ The H-Bridge is typically an electrical circuit that enables a voltage to be applied across a load in either direction to an output, e.g. motor.
▪ 2 interface for 5V Servo connected to the Arduino's high-resolution dedicated timer - no jitter.
▪ Can drive 4 DC motors or 2 stepper motors or 2 Servo.
▪ Up to 4 bi-directional DC motors with individual 8-bit speed selection.
▪ Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.
▪ 4 H-Bridges: per bridge provides 0.6A (1.2A peak current) with thermal protection, can run motors on 4.5V to 10V DC.
▪ Pull down resistors keep motors disabled during power-up.
▪ Reset button.
▪ 2 external terminal power interface, for seperate logic/motor supplies.
▪ Tested compatible for Arduino Mega, Diecimila & Duemilanove.
▪ Size:6.8cm x 5.5cm x 2cm - 2.68inch x 2.17inch x 0.79inch.

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Store Address:
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LM2596 DC-DC Module with Voltage Display

Specification:
▪ Input Voltage: 4-35V
▪ Adjustable Output Voltage: 1.25-30V
▪ 7 segment display
▪ Output Current: 3A
▪ PCB Size: 68x35mm

Features:
▪ Input reverse polarity protection
▪ Built-in output short protection function
▪ The built-in thermal shutdown function
▪ Press the right key to let the display show the input or output voltage. when the right “OUT” led light, it shows output, the left “IN” led show input.
▪ Power off memory function, show that road after power voltage values measured for the last time
▪ Press the touch button for 3 seconds to turn off LED display, touch the button again to turn on the LED display
▪ The band terminals, no iron can also be easy to use, and retention wire connection point

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Store Address:
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20×4 LCD Display

A 20x4 LCD means it can display 20 characters per line and there are 4 such lines. In this LCD each character is displayed in 5x8 pixel matrix. This LCD has two registers, namely, Command and Data.

Specifications:
◾ Operating Voltage is 4.7V to 5.3V.
◾ Current consumption is 1mA without backlight.
◾ Alphanumeric LCD display module, meaning can display alphabets and numbers.
◾ Consists of 4 rows and each row can print 20 characters.
◾ Each character is build by a 5×8 pixel box.
◾ Can work on both 8-bit and 4-bit mode.
◾ It can also display any custom generated characters.

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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

LCD Display 16 x 2

The 16 x 2 LCD display is a type of liquid crystal display (LCD) that is commonly used in devices such as calculators, microwave ovens, and thermostats. It is called a 16 x 2 display because it has 16 columns and 2 rows of characters that can be displayed on the screen. The characters are usually formed using a matrix of dots, and each character is typically 5 pixels wide and 8 pixels tall. The display is controlled by a microcontroller or other type of computer chip, which sends signals to the LCD to indicate which characters should be displayed and where they should be displayed on the screen.

Features:
▪ Operating Voltage: 4.7V – 5.3V.
▪ Current consumption: 1 mA without backlight.
▪ Alphanumeric LCD display module, meaning can display alphabets and numbers.
▪ Consists of two rows and each row can print 16 characters.
▪ Each character is built by a 5×8 pixel box.
▪ Can work on both 8-bit and 4-bit mode.

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Store Address:
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Dual Shaft BO Motor-Straight

Features :
◾ Cost-effectiveness of the injection-molding process.
◾ Elimination of machining operations.
◾ Low density: lightweight, low inertia.
◾ Uniformity of parts.
◾ Capability to absorb shock and vibration as a result of elastic compliance.
◾ Ability to operate with minimum or no lubrication, due to inherent lubricity.
◾ The relatively low coefficient of friction.
◾ Corrosion-resistance; elimination of plating, or protective coatings.
◾ The quietness of operation.
◾ Tolerances are often less critical than for metal gears, due in part to their greater resilience.
◾ Consistency with the trend to greater use of plastic housings and other components.

Specification :
◾ Low density: lightweight, low inertia.
◾ Capability to absorb shock and vibration as a result of elastic compliance.
◾ Ability to operate with minimum or no lubrication, due to inherent lubricity.
◾ The relatively low coefficient of friction.
◾ Operating Voltage(VDC): 3~12
◾ Shaft Length (mm): 8.5
◾ Shaft Diameter (mm): 5.5 (Double D-type)
◾ No Load Current: 40-180mA.
◾ Rated Speed(After Reduction): 100 RPM
◾ Rated Torque: 0.35 Kgcm

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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

Robot Yellow Plastic Wheel soft Tire 65mm

Specifications:

Tire outer diameter: 69mm
Tire Inner Diameter: 51.8mm
Width: 26.6mm
Inner frame shaft outer diameter straight: 13.8mm
Shaft hole width: 3.66mm
Shaft hole length: 5.3mm

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Store Address:
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Water Level Depth Detection Sensor Module

Specifications:
Working Voltage: DC 3-5V.
Working Current:

ESP8266 NodeMCU V3 Development Board with CH340

Specifications:
◾ Wireless 802.11 b / g / n standard.
◾ Support STA / AP / STA + AP three operating modes.
◾ Built-in TCP / IP protocol stack to support multiple TCP Client connections (5 MAX).
◾ D0 ~ D8, SD1 ~ SD3: used as GPIO, PWM, IIC, etc., port driver capability 15mA.
◾ AD0: 1 channel ADC.
◾ Power input: 4.5V ~ 9V (10VMAX), USB-powered.
◾ Current: continuous transmission: ≈70mA (200mA MAX), Standby:

DHT11 Temperature and Humidity with led and wires

Features:
◾ DHT11 sensor with PCB and LED indicator along with cable; 3 to 5V power and I/O, 4 pins with 0.1″ spacing
◾ The board has pre-built 4.7K or 10K resistor, which you will need to use as a pull-up from the data pin to VCC.
◾ 2.5mA max current use during conversion (while requesting data)
◾ Good for 20-80% humidity readings with 5% accuracy
◾ Good for 0-50°C temperature readings ±2°C accuracy.

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

TP4056 Type-c USB 5V 1A 18650 Lithium Battery Charger Module

Specification:
◾ Input interface: Type-c USB..
◾ The board size: about 2.5 * 1.65 CM.
◾ Charge cut-off voltage: 4.2 V + / – 1%.
◾ Battery overcharge lifting voltage: 4.00 V.
◾ Battery discharge termination voltage: 3.2 V.
◾ Battery: over-current protection current 3 A.
◾ Maximum charging current output: 1000 ma.
◾ The battery discharge protection voltage: 3.0 V.
◾ The battery overcharge protection voltage: 4.28 V.
◾ The input voltage: 4.35-6V (recommended voltage 5V).

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

TP4056 Type B USB Lithium Battery Charger Module

◾ Inputs with MICRO USB female, can be directly input to do with the phone charger rechargeable lithium battery.
◾ And still retains the input voltage wiring pads, can be very convenient DIY.
◾ Input voltage: 5V.
◾ Charging cut-off voltage: 4.2V ± 1%.
◾ Maximum charge current: 1000mA.
◾ Battery over-discharge protection voltage: 2.5V.
◾ Battery overcurrent protection current: 3A.
◾ Board size: 2.6 * 1.7CM.

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Store Address:
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DC 0-25V MINI VOLTAGE SENSOR MODULE FOR ARDUINO

Specifications:
◾ Dimensions: 27 x 14 x 13 mm .
◾ Weight: 4 gm.
◾ Input Voltage range: DC0 to 25 V.
◾ Voltage detection range: DC 0.02445 V to 25 V.
◾ Analog Voltage resolution : 0.00489 V.
◾ Output Interface : “+ ” connected 5/3.3V, “-” connected GND, “s” connected Arduino AD pins.
◾ DC input interface: red terminal positive with VCC, negative with GND.
◾ You can also use the IICLCD1602 LCD to display voltage.
◾ By 3P connector, connect this module with the expansion of board Arduino, not only makes it easier for you to detect voltage battery.

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Store Address:
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Step Down Module 6-32V 9V 12V 24V To Fast Quick Charger Circuit Board

Product Features ·
Input voltage range: 6V-32V ·
· Output voltage: default 5V, automatically adjust between 3-12V after triggering fast charge.
· Output power: up to 24W (5V/3.4A, 9V/2.5A, 12V/2A, etc.).
· Output voltage cable compensation function.
· Conversion efficiency: 90%-97%.
· Support multiple fast charging protocols.
· Input overvoltage and undervoltage protection.
· Input overcurrent protection.
· Output overcurrent, short circuit protection.
· Machine over temperature protection Support fast charge agreement.
· Support DCP protocol, BC1.2, Apple, Samsung protocol.
· Support Huawei Fast Charge Protocol FCP/SCP.
· Support Huawei Fast Charge Protocol AFC.
· Support Spreadtrum Fast Charge Protocol SFCP.
· Support Qualcomm QC2.0 and 3.0.
· Support MTK PE1.1/PE2.0.

Applications:
· Solar panel to mobile phone charging.
· Car charging retrofit.
· Driving recorder power supply.
· Home power supply, smart plug modification.
· Fast charge adapter.

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

Soil Moisture Sensor Module

Specifications:
▪ Operating voltage: 3.3V~5V;
▪ Dual output mode, analog output more accurate;
▪ A fixed bolt hole for easy installation;
▪ With power indicator (red) and digital switching output indicator (green);
▪ Having LM393 comparator chip, stable;
▪ Panel PCB Dimension: Approx.3cm x 1.5cm;
▪ Soil Probe Dimension: Approx. 6cm x 3cm;
▪ Cable Length: Approx.21cm;

Interface Description(4-wire);
▪ VCC: 3.3V-5V;
▪ GND: GND;
▪ DO: digital output interface(0 and 1);
▪ AO: analog output interface;

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Store Address:
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Raindrops Detection Sensor Module

Specifications:
◾ Area: 5cm x 4cm nickel plate on side,
◾ Anti-oxidation, anti-conductivity, with long use time;
◾ Comparator output signal clean waveform is good, driving ability, over 15mA;
◾ Potentiometer adjust the sensitivity;
◾ Working voltage 5V;
◾ Output format: Digital switching output (0 and 1) and analog voltage output AO;
◾ With bolt holes for easy installation;
◾ PCB size: 3.2cm x 1.4cm;
◾ Uses a wide voltage LM393 comparator.

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

J5019 Adjustable 4.5-8v To 3.7-27v 1A Boost Converter 3.7v 4.2v Battery Charger

Specifications:
Input voltage: 4.5-8V.
Output voltage: continuous adjustable 4.3-27V (Counter clockwise to boost voltage).
Charging voltage: 4.2V.
Charging current: up to 1A.
Discharge current: the maximum 2A.
Output reference maximum current: 5V 1.4A, 9V 0.8A, 12V 0.6A.
Quiescent current: about 0.5 mA.
Overshoot protection: Yes.
Over discharge protection: None (also can be said yes, because 2V cut-off boost but does not block the output, output has 2V).
Deadline boost: 2V, depending on whether added the additional protection board.
Size: 3.3 x 2.3 x 0.9cm.

Features:
1. Micro USB input terminal with a female, can be directly input to do with the phone charger rechargeable lithium battery, And still retains the input voltage wiring pads, can be very convenient DIY.
2. It can be used for voltage 3.6 3.7V, etc. 18650, polymer and other lithium battery charge and discharge protection.
3. It Support charge discharge over current protection.
4. It Supports simultaneous charging and discharging.
5. Charge cutoff voltage: DC 4.2V±1%.
6. Charging mode: linear charge.
7. Working environment temperature: -20-85 degrees Celsius.
8. For example: VIN+ Port input 5V solar panels, BAT+ port can output 4.2V to charge 3.7V 18650 battery Note: The OUT+ Port can output an adjustable voltage.

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

TP5100 2A Lithium Battery Charging Module

Features:
* Double 8.4v / 4.2v lithium rechargeable single.
* Programmable charge current 0.1A-2A.
* Programmable steady precharge current 10% -100%.
* Wide operating voltage, maximum reach 18V.
* Red and green LED charge status indicator.
* Chip temperature protection, overcurrent protection, undervoltage protection.
* Battery temperature protection, reverse battery shutdown, short circuit protection.
* Switching frequency 400Khz, usable inductance 20uH and more.
* PWR_ON Power battery for switching control.

Maximum Ratings:
* Static input supply voltage (VlN): 20v.
* BAI: -8.4v-20v.
* BAT short-cireuit Duration: Continuous.
* operating environment Temperature range: -40 Celsius – 85 Celsius.
* Storage temperature range: -65 “C – 125 Celsius.

Application:
* Portable equipment, various chargers.
* Smartphone, FDA, mobile cellular telephone.
* MP4,MP5 players, tablets.
* HM.
* Power Tools.
* Walkie-talkie.

Our page-1 link:
https://www.facebook.com/NHElectronicsBD
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https://www.facebook.com/nh.elec.BD
Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

MT3608 Step-Up Adjustable DC-DC Switching Boost Converter

The MT3608 2A Max DC-DC Step Up Power Module Booster Power Module is a low-cost module that can step-up a 2 to 24V input voltage up to a 5 to 28V output at up to 2A.

FEATURES :-
Its efficient by up to93%.
It can source a good amount of current.
It is an inexpensive converter module.
Its simple to adjust to get your desired increase in voltage.

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Store Address:
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MT3608 Micro USB DC-DC Voltage Regulator Step Up Boost Converter Power Supply Board 2V-24V to 5V-28V 2A

The MT3608 Boost DC-DC voltage regulator is a constant frequency, current mode step-up converter intended for small, low power applications that boosts any input voltage of 2V to 24V to an output voltage of ~3V to 26V . The MT3608 device switches at 1.2MHz and allows the use of tiny, low cost capacitors and inductors to minimize the overall module size. Internal soft-start circuitry results in small inrush current and extends battery life.

MT3608 MicroUSB Step Up Boost Power Supply Regulator Specifications:
◾ Maximum output current: 2A
◾ Input voltage: +5V USB, or 2V ~ 24V
◾ Maximum output voltage: 26V (Output voltage must be greater than input voltage)
◾ Maximum efficiency: Up to 97%, typically 93% at Vout=12V, Vin=5V, Iout=200mA
◾ Dimensions: 30 mm * 17 mm * 7 mm (1.2 x 0.7 x 0.24 inches)

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

TPA3118 Mono Amplifier Module

Features:
▪ Operating Voltage: Wide power supply ranges from 4.5V to 24V DC.
▪ Multiple Switching Frequencies.
1.AM Avoidance.
2.Master and Slave Synchronization.
3.Up to 1.2-MHz Switching Frequency.

▪ Feedback Power-Stage Architecture.
▪ Differential and Single-Ended Inputs.
▪ Stereo and Mono Mode With Single-Filter Mono Configuration.
▪ Integrated Self-Protection Circuits.
1.Overvoltage.
2.Undervoltage.
3.Overtemperature.
4.DC-Detect.
5.Short Circuit With Error Reporting.
▪ Dimensions(LxWxH) in cm 13 x 11 x 6.

Our page-1 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

TPA3110 30W (15W+15W) Digital Stereo Audio Power Amplifier Board CA-3110

Features :
▪ Wide range in Input voltage Source i.e. from 8v to 24v.
▪ It can be used for applications like car, vehicle, computer speaker, family audio and video systems, and in your own DIY music System.
▪ This amplifier board comes with 4 mounting holes, which is very helpful in tightening the complete circuit board according to your project requirement.
▪ 3110 power amplifier chip does not require a heat dissipation sink. It has over-current and over-heat protection.

Specification :
▪ Operating voltage range: 8V to 24V.
▪ Amplifier chip: TPA3110.
▪ Output power: 2 x 15W.
▪ Dimension: 25mm x 33mm x 3mm.

Our page-1 link:
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Our page-2 link:
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Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

Joystick Module

Features:
▪ Two independent Potentiometer: one for each axis ( X and Y).
▪ Auto return to center position.
▪ Low weight.
▪ Cup-type K**b.
▪ Compatible to interface with Arduino or with most microcontrollers.


Technical Specifications:
▪ Operating Voltage: 5V.
▪ 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).
▪ Operating temperature: 0 to 70 °C.

Our page-1 link:
https://www.facebook.com/NHElectronicsBD
Our page-2 link:
https://www.facebook.com/nh.elec.BD
Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.

MQ-135 Air Quality Gas Sensor Module

The MQ-135 Gas sensor can detect gases like Ammonia (NH3), sulfur (S), Benzene (C6H6), CO2, and other harmful gases and smoke. Similar to other MQ series gas sensor, this sensor also has a digital and analog output pin. When the level of these gases go beyond a threshold limit in the air the digital pin goes high.

Specifications of MQ-135 gas sensor module:
• Wide detecting scope
• Fast response and High sensitivity
• Stable and long-life Simple drive circuit
• Used in air quality control equipment for buildings/offices, is suitable for detecting
of NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
• Size: 35mm x 22mm x 23mm (length x width x height)
• Working voltage: DC 5 V
• Signal output instruction.
• Dual signal output (analog output, and high/low digital output)
• 0 ~ 4.2V analog output voltage, the higher the concentration the higher the voltage.

Our page-1 link:
https://www.facebook.com/NHElectronicsBD
Our page-2 link:
https://www.facebook.com/nh.elec.BD
Store Address:
94/1st, 1st floor, Mazar Co-operative Market, Mazar road, Mirpur-1, Dhaka-1216.