Hemal Electronics

• Model Name/NumberNRF24L01
• Voltage5 V
• Transmitting Rate7 dB
• RangeLess Than 100 m

The Latest ESP-12F ESP8266 Wifi Module AP & Station Remote Serial Wireless IoT Board is an integrated chip designed for the needs of a new connected world. It can handle all the necessary overhead for communicating with your network, such as TCP/IP stack and communicating with your 802.11 networks.

It is completely addressable over SPI and UART protocols allowing you to connect your sensors or project directly to it through its GPIO’s. ESP8266 is a low-cost Wi-Fi chip with full TCP/IP stack and MCU (Micro Controller Unit) capability.

ESP8266 Serial Wifi Wireless Transceiver Module is a self-contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. ESP8266 Serial Wifi Wireless Transceiver Module is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor.

Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost-effective board with a huge, and ever-growing, community.

ESP8266 Serial Wifi Wireless Transceiver Module has a powerful enough onboard processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existence interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions and requires no external RF parts.

Specifications & Features of ESP-12F ESP8266 Wifi Wireless Module:-

• Communication interface voltage: 3.3V
• Working current: 240mA(MAX)
• Serial port baud rate: 115200 (default), can be modified to other values by AT command
• Serial communication format: 8N1
• Wireless Network Mode: station / softAP / SoftAP + station
• Wireless criteria: 802.11 b / g / n
• Compatible with ESP-12 ESP-202
• WIFI @ 2.4 GHz, support for WPA / WPA2 security mode
• It is very easy to develop projects with AT commands
• Surface Mount Package with 2mm Pitch Pads
• Mulitple GPIO’s for all your sensor needs
• Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLL, regulators, DCXO and power management units
• +19.5dBm output power
• Power down leakage current of <10uA
• Integrated low power 32-bit CPU could be used as an application processor
• SDIO 1.1/2.0, SPI, UART
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation & 0.4ms guard interval
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)
• Both SMD and Inline package are available, and the pin pitch is 2.0mm.

• Profiles: Bluetooth serial port Profile
• Bluetooth protocol: Bluetooth Specification v2.0+EDR
• Frequency: 2.4GHz ISM band
• Modulation: GFSK(Gaussian Frequency Shift Keying)
• Emission power: ≤4dBm, Class 2
• Sensitivity: ≤-84dBm at 0.1% BER
• Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps
• Security: Authentication and encryption
• Power supply: +3.3VDC 50mA
• Working temperature: -20 ~ +75Centigrade
• Dimension: 26.9mm x 13mm x 2.2 mm

• Embedded Projects
• Industrial Applications
• Computer and portable Devices
• GPS receiver

MPU6050 module uses the popular MPU6050 Sensor which includes both a 3 axis accelerometer and a 3 axis gyroscope in a single package.The sensor can be interfaced through a I2C connection which allows an easy and direct interface between the sensor and a micro controller.

The MPU-6000/MPU-6050 family of parts are the world’s first and only 6-axis Motion Tracking devices designed for the low power, low cost, and high performance requirements of smartphones, tablets and wearable sensors.

The 6 Degree of Freedom sensor breakout integrate with the MPU6050 sensor and the low noise 3.3v regulator and pull-up resistors for the I2C bus. So it's available to directly hook up the sensor with the Arduino processors for your robotics,HCI and wearable projects.

Features:-

• Uses the popular MPU6050 IC
• MPU6050 contains a 3 axis Accelerometer and Gyroscope in a single package and simplifies design and usage. It also reduces cross axis alignment issues unlike other sensors with separate accelerometer and gyroscope ICs
• Digital I2C interface to read the output of the sensor
• Input Voltage: 2.3 - 3.4V
• Selectable Solder Jumpers on CLK, FSYNC and AD0
• Tri-Axis angular rate sensor (gyro) with a sensitivity up to 131 LSBs/dps and a full-scale range of ±250, ±500, ±1000, and ±2000dps
• Tri-Axis accelerometer with a programmable full scale range of ±2g, ±4g, ±8g and ±16g
• Embedded algorithms for run-time bias and compass calibration. No user intervention required
• Digital-output temperature sensor

The nRF24L01 is designed for operation in the world wide ISM frequency band at 2.400 – 2.4835GHz. An MCU (microcontroller) and very few external passive components are needed to design a radio system with the nRF24L01. The nRF24L01 is configured and operated through a Serial Peripheral Interface (SPI.) Through this interface the register map is available. The register map contains all configuration registers in the nRF24L01 and is accessible in all operation modes of the chip.

he nRF24L01 is used on a wide variety of applications that require wireless control. They are transceivers which this means that each module can transmit and receive data.

NRF24L01+ 2.4GHz Antenna Wireless Transceiver Module can be used with Arduino, Mbed, ARM or any other MCU.

The module can be easily powered by mounting it over  3.3V Adapter Board for 24L01 Wireless Module

Features 

• NRF24L01 is a universal ISM band monolithic transceiver chip works in the 2.4-2.5GHz
• Wireless transceiver including: Frequency generator, enhanced type, SchockBurstTM, mode controller, power amplifier, crystal amplifier, modulator, demodulator
• The output power channel selection and protocol settings can be set extremely low current consumption, through the SPI interface
• As the transmit mode, the transmit power is 6dBm, the current is 9.0mA, the accepted mode current is 12.3mA, the current consumption of the power-down mode and standby mode are lower
• Built-in 2.4GHz antenna, supports up to six channels of data reception
• Size: 15 x 29mm
• Low operating voltage: 1.9-3.6V
• 125 channels, multi-point communication and frequency hopping to meet the communication needs
• High Rate: 2Mbps, as air transmission time is very short, greatly reducing collision phenomena in wireless transmission (air transfer rate of software setting: 1Mbps or 2Mbps)
• Low power consumption: When the answer mode communication, fast air transmission and start-up time, which greatly reduces the current consumption
• Low application cost: NRF24L01 integrated part of all high-speed signal processing related to RF protocol, such as: automatic retransmission of lost packets and automatically generate response signals, etc.
• NRF24L01 SPI interface: hardware SPI port, MCU I/O ports
• Internal FIFO compatible with a variety of microprocessor interface, micro-controller is convenient

ESP32 Development board is based on the ESP WROOM32 WIFI + BLE Module.It's a low-footprint, minimal system development board powered by the latest ESP-WROOM-32 module and can be easily inserted into a solderless breadboard.

It contains the entire basic support circuitry for the ESP-WROOM-32, including the USB-UART bridge, reset- and boot-mode buttons, LDO regulator and a micro-USB connector. Every important GPIO is available to the developer.

Features:-

• Small volume, easily embeded to other products
• Strong function with support LWIP Protocol, Freertos
• Suppporting three modes :  AP, STA, and AP+STA
• Supporting Lua program, easily to develop
• Includes CP2102 USB-UART bridge

The ESP-01 ESP8266 Serial WIFI Wireless Transceiver Module is a self-contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost-effective board with a huge, and ever growing, community.

This module has a powerful enough onboard processing and storage capability that allows it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, including the front-end module, is designed to occupy minimal PCB area. The ESP8266 supports APSD for VoIP applications and Bluetooth co-existing interfaces, it contains a self-calibrated RF allowing it to work under all operating conditions and requires no external RF parts.

There is an almost limitless fountain of information available for the ESP8266, all of which has been provided by amazing community support. In the Documents section below you will find many resources to aid you in using the ESP8266, even instructions on how to transforming this module into an IoT (Internet of Things) solution!

Note: The ESP8266 Module is not capable of 5-3V logic shifting and will require an external Logic Level Converter. Please do not power it directly from your 5V dev board.

Specifications and Features:-

• 802.11 b/g/n
• Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLLs, regulators, DCXO and power management units
• +19.5dBm output power in 802.11b mode
• Power down leakage current of <10uA
• 1MB Flash Memory
• Dimensions: 25 x 15 x 11 mm (LxWxH)
• PCB Thickness: 1mm
• Weight: 2 gm
• Integrated low power 32-bit CPU could be used as application processor
• SDIO 1.1 / 2.0, SPI, UART
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation & 0.4ms guard interval
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)

1. The smallest 802.11b/g/n Wi-Fi SOC module
2. Low power 32-bit CPU, can also serve as the application processor
3. Up to 160MHz clock speed
4. Built-in 10 bit high precision ADC
5. Supports UART/GPIO/IIC/PWM/ADC
6. SMD-16 package for easy welding
7. Integrated Wi-Fi MAC/BB/RF/PA/LNA
8. Deep sleep current as low as 20uA
9. Embedded lwIP protocol stack
10. Supports STA/AP/STA + AP operation mode
11. Support Smart Config/AirKiss technology
12. UART baudrate up to 4Mbps
13. General AT commands can be used quickly
14. Supports remote firmware upgrade (FOTA)

This is ESP-12E: ESP8266 Serial Port WIFI Wireless Transceiver Module For Arduino.

This small WIFI transceiver is the perfect solution for home Automation and IoT applications. It can be the replacement of your NRF24L01, it can talk to your WIFI router directly through the UART MCU’s 

The ESP-12 module is one of the most complete of the ESP family as it allows you to use the biggest amount of pins of all of them. You can program this module to work stand alone with the Arduino IDE or with LUA as NodeMCU.

1. WS2812 Led on board.
2. 802.11 b/g/n
3. Wi-Fi Direct (P2P), soft-AP
4. Integrated TCP/IP protocol stack
5. Integrated TR switch, balun, LNA, power amplifier and matching network
6. Integrated PLL, regulators, DCXO and power management units
7. +19.5dBm output power in 802.11b mode
8. Power down leakage current of <10uA
9. Integrated low power 32-bit CPU could be used as an application processor
10. SDIO 1.1 / 2.0, SPI, UART
11. STBC, 1×1 MIMO, 2×1 MIMO
12. A-MPDU & A-MSDU aggregation & 0.4ms guard interval
13. Wake up and transmit packets in < 2ms
14. Standby power consumption of < 1.0mW (DTIM3)
15. Access Point and Station Modes.

This is 125kHz RFID Tag. The RFID technology is used for sensing and identifying tagged people and objects for access control, automation, and a whole range of different applications.

Operating on a frequency of 125kHz, these tokens are all pre-programmed with unique ID numbers to communicate wirelessly with RFID Readers over distances of around 10cm or less. This means you can attach it to vehicles or items, keyrings or even pets’ collars to keep track of the location via an array of readers in the office, warehouse or home.

This basic RFID tag works in the 125kHz RF range and comes with a unique 32-bit ID. It is not re-programmable. This blank, smooth, and mildly flexible RFID tag is ready for your logo (or hand-drawn scribble).

Designed for the RFID 125KHZ duplicator. can copy all the ID card, such as Access Card, District Card, Parking etc.

• Power Supply3-6V
• Reading Range50 - 100 mm
• Scan Speed0-100 Scans/sec
• Memory Capacity128 MB

• Weight10-20 gm
• Operating Distance6-8 cm
• Operating Frequency125 Khz
• Memory Capacity512 MB
• Voltage5 V

We provide most superior quality Water Level Sensor with the most premium standards & performance available

Features:

·         Manages over pressure burdens

·         Corrosion resistant

·         Low power consumption

·         Correct actuator

·         Small in structure

·         Little contact gap

Voltage Sensor is a precise low cost sensor for measuring voltage. It is based on principle of resistive voltage divider design. It can make the red terminal connector input voltage to 5 times smaller. Arduino analog in25V (if using 3.3V systems, input voltage not greater than 3.3Vx5=16.5V).put voltages up to 5V, the voltage detection module input voltage not greater than 5Vx5=

Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023), so the minimum voltage of input voltage detection module is 0.00489Vx5=0.02445V.

Features:-

• Voltage input range: DC 0-25V
• Voltage detection range: DC 0.02445V-25V
• Voltage Analog Resolution: 0.00489V
• DC input connector: Terminal cathode connected to VCC, GND negative pole
• Output interface: "+" connect 5/3.3V, "-" connect GND, "s" connect the Arduino AD pins

This hybrid RF Transceiver Module provides a complete RF transmitter and receiver module solution which can be used to transmit data at up to 3KHz from any standard CMOS/TTL source.

The transmitter module is very simple to operate and offers low current consumption (typical. 11mA). Data can be supplied directly from a microprocessor or encoding device, thus keeping the component count down and ensuring a low hardware cost.

The RX – ASK is an ASK Hybrid receiver module. The RF Transmitter Receiver Module is an effective low-cost solution for using 433 MHz. The TX-ASK is an ASK hybrid transmitter module. TX-ASK is designed by the saw resonator, with an effective low cost, small size and simple to use for designing.

Specifications of 433MHz RF Transmitter Receiver Wireless Module:-

• Range in open space(Standard Conditions) : 100 Meters
• RX Receiver Frequency : 433 MHz
• RX Typical Sensitivity : 105 Dbm
• RX Supply Current : 3.5 mA
• RX IF Frequency : 1MHz
• RX Operating Voltage : 5V
• TX Frequency Range : 433.92 MHz
• TX Supply Voltage : 3V ~ 6V
• TX Out Put Power : 4 ~ 12 Dbm

Features of 433MHz RF Transmitter Receiver Wireless Module:-

• Low Power Consumption
• Easy For RF based Application
• Complete Radio Transmitter
• Transmit Range Up To 50m
• CMOS / TTL Input
• No Adjustable Components
• Very Stable Operating Frequency
• Low Current Consumption (Typ 11mA)
• Wide Operating Voltage
• ASK Modulation

ADXL345 is a Breakout board for the Analog Device's ADXL345 triple axis accelerometer. The module is populated with MOSFET based Voltage level conversion circuitry to enable you to interface different type of microcontrollers (3V3 & 5V). Apart from the above all, necessary components like decoupling capacitors ,filter capacitors ,pull up resistors and LED are also populated on board.

It is ideal for motion and acceleration sensing applications.It is a low-power, 3-axis MEMS accelerometer modules with both I2C and SPI interfaces.

The ADXL345 features 4 sensitivity ranges from +/- 2G to +/- 16G. And it supports output data rates ranging from 10Hz to 3200Hz such as the Arduino.

Features:

• Digital Output: SPI / I2C
• Low Power Consumption
• Compact Accelemotor / inclinometer
• 5V/3.3V input support.
• PCB Board Size: 28mm x 14 mm
• lower pressure drop than the 1117 Onboard RT9161 chip power
• ideal for noisy power environment

DXL335 is a Breakout board based on 3 axis ADXL335 IC from Analog Devices. The Accelerometer Module require no external devices and works on 5V power supply. It can be directly interfaced to ADC of a microcontroller without any external components.

This module can be used to sense motion or tilt(in case of non moving) in 3 axis.This is the latest in a long, proven line of Analog Sensors- the holy grail of accelerometers. The ADXL335 is a triple axis MEMS accelerometer with extremely low noise and power consumption - only 320uA! The sensor has a full sensing range of +/-3g The burst echo to return to the sensor. By measuring the echo pulse width, the distance to target can easily be calculated.

Features of  ADXL335:

• 3-axis sensing.
• Small, low profile package.
• 4 mm × 4 mm × 1.45 mm LFCSP.
• Low power : 350 μA (typical).
• Single-supply operation: 1.8 V to 3.6 V.
• 10,000 g shock survival.
• Excellent temperature stability.
• BW adjustment with a single capacitor per axis.
• RoHS/WEEE lead-free compliant.

Applications of ADXL335:

• Cost sensitive, low power, motion- and tilt-sensing applications.
• Mobile devices.
• Gaming systems.
• DIY projects requiring orientation information.

This is Reed Switch 2 x 14 mm Magnetic Control Switch with Normally Open Contact.

When the device is exposed to a magnetic field, the two ferrous pins inside the switch pull together and the switch closes. When the magnetic field is removed, The Reed Switch separates and the switch opens.

This small and easy to use module can be used in a variety of environmental conditions, it operates very reliably in the -50°C to +140°C temperature range.

1. Small Module.
2. Very easy to use.
3. Direct connection in the circuit.

The HM-10 is a readily available Bluetooth 4.0 module, which can configure as either Master or slave. This module is used for establishing wireless data communication. The module is designed by using the Texas Instruments CC2540 or CC2541Bluetooth low energy(BLE) System on Chip (SoC). You can use it simply for a serial port replacement to establish connection between MCU, PC to your embedded project and etc.

• BT Version: BT Specification V4.0 BLE
• Working frequency: 2.4GHz ISM band
• Modulation method: GFSK (Gaussian Frequency Shift Keying)
• RF Power: -23dbm, -6dbm, 0dbm, 6dbm
• Speed: Asynchronous: 2-6K Bytes, Synchronous: 2-6K Bytes
• Security: Authentication and encryption
• Service: 0xFFE0 (Modifiable use AT+UUID command)
• Characteristic: 0xFFE1 (Modifiable use AT+UUID command)
• Characteristic: Notify and Write (Modifiable use AT+UUID command)
• Power: +2.5V~3.5VDC 50mA
• Power: Active state 8.5mA; Sleep state 50~200uA
• Working temperature: –20 ~ +105 Centigrade
• Size: HM-10 27mm x 13mm x 2.2 mm

• Computer and peripheral devices
• Robotics
• Industrial control
• MCU projects

Note 1: Do not attach this device directly to a PC RS232 Port. You will need an RS232 to TTL converter circuit if you need to attach this to a computer

Note 2: I/O Pins are not 5V Tolerant , use level converter for interfacing with 5V Microcontrollers.

Note 3: Both the HM-10 and its clone works in the same manner only the difference is in the terms of AT commands formats.

• Model Name/NumberBMP180
• Supply Voltage9.5 to 28 VDC
• Size21 mm x 18 mm
• Low Power Consumption0.5 uA at 1 Hz
• Packaging TypeBox

Features

• Get more precise temperature, atmospheric pressure values, and approximate altitude data
• Enhancement of GPS navigation (e.g. time-to first-fix improvement, dead-reckoning, slope detection)
• Indoor navigation (floor detection, elevator detection)
• Outdoor navigation, leisure and sports applications
• Weather forecast
• Health care applications (e.g. spirometry)
• Vertical velocity indication (e.g. rise/sink speed)
• Libraries and tutorials available for Arduino and other micro controllers
• Operating Voltage: 1.71V to 3.6V – would typically be operated from 3.3V
• Operating Temperature: -40 to +85 deg. Celsius (full accuracy between 0 and +65 deg. C)
• Operating Pressure: 300 hPa to 1100 hPa
• Peak current: 1.12mA
• Accuracy between 700 to 900hPa and 25 to 40 deg. C: ±0.12hPa and ±1.0m

The LiPo Battery Voltage Checker 1S-8S with Buzzer is a quality product available and a special design to measure and display the voltage of LiPo battery packs. This voltage checker can measure the voltage of the battery pack as well as the voltage of every single cell of the battery pack.

This unit also features a handy built-in LED display that will show the voltage of each cell followed by the overall voltage of the pack. Don’t risk your model by flying on depleted batteries, at this price piece of mind flying can’t be any cheaper!

Simply connect the battery balance plug to the leads of this voltage checker, it will show the instant voltage of each cell one by one ending with displaying the voltage of the total pack. The Li-PO Voltage Checker 1S-8S with Buzzer Alarm is equipped with loud twin piezo alarms which will notify you once your cells reach a low voltage or user defined voltage.

You can customize the alarm to sound at a voltage between 2.7v-3.8v per cell in 0.10v increments. It has a mode button at the top for setting the desired voltage value.

• 100% Brand new and high-quality STM32 Board
• 72MHz work frequency.
• 64K flash memory, 20K SRAM.
• 2.0-3.6V power, I/O.
• Reset(POR/PDR).
• 4-16MHz crystal.
• Onboard Mini USB interface, you can give the board power supply and USB communication.