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ESP-12E remote serial Port module ESP8266 WIFI wireless module

ESP8266 ESP-12E Remote Serial Port WIFI Transceiver Wireless Module Description: ESP8266-12E is an enhanced version ESP8266-12, improve peripheral circuitry increases impedance matching, the signal output is better, whether it is stable or anti-jamming capability, have been greatly improved! For users before selecting the ESP-12, it does not matter even if the product has been made, enhanced version is fully compatible with previous firmware, the pin has added six IO ports on the basis of the ESP-12, SPI leads Note: We don't offer any supports ,sorry for the inconvenience Package included: 1 x ESP8266 ESP-12E Remote Serial Port WIFI Transceiver Wireless Module.

2 KWD Add to Cart

Ethanol Alcohol Breath Sensor MQ-3

Sensitive for alcohol, ethanol. Output voltage boosts along with the concentration of the measured gases increases. Fast response and recovery. Adjustable sensitivity. Signal output indicator.

1.5 KWD Add to Cart

Feetech 9g micro servos-180 degree -FS90

This is a great general-purpose actuator for tiny mechanisms. 
The FS90 is a 9 g analog servo from FEETECH (formerly known as Fitec) 
that offers position control over a 120° operating angle for standard servo pulses between 900 µs and 2100 µs. 
As with most servos, the pulse range can be expanded to achieve an expanded operating angle, 
but the limits of this are not specified by FEETECH.

1.750 KWD Add to Cart

Feetech 9g micro servos-360 degree-with wheel-FS90R

  • High Rotation - well-controlled, 360 degree rotation, perfect for robot joint activities.
  • This feetech servo has CE & ROHS certificate.
  • This black plastic wheel is press-fit onto the FS90R output gear shaft, and easy to make a nice drive solution for small robots.
2.500 KWD Add to Cart

Fingerprint Scanner - TTL (GT-521F32)

Fingerprint scanners are awesome! Why use a key when you have one right at the tip of your finger? Unfortunately, they're often unreliable or difficult to implement. Well not anymore! This great GT-521F32 fingerprint module from ADH-Tech communicates over TTL Serial so you can easily embed it into your next project. The module itself does all of the heavy lifting behind reading and identifying the fingerprints with an onboard optical sensor and 32-bit ARM Cortex M3 processor.

To get started, just register each fingerprint that you want to store by sending the corresponding command and pressing your finger against the reader three times. The fingerprint scanner can store different fingerprints, and the database of prints can even be downloaded from the unit and distributed to other modules. In addition to the fingerprint "template," the analyzed version of the print, you can retrieve the image of a fingerprint and even pull raw images from the optical sensor!

This module is the economical version of the GT-521F52 and can store up to 200 different fingerprints. It is capable of 360° fingerprint recognition and download/upload templates using serial interface. Additionally, the GT-521Fxx series features a resolution of 450dpi, with a false acceptance rate of <0.001% and a false rejection rate of <0.1% while only needing <1.5 seconds to identify a unique fingerprint!

The module is small and easy to mount using four mounting holes surrounding the sensor. The onboard JST-SH connector has four signals: Vcc, GND, Tx and Rx. A compatible JST-SH pigtail can be found in the Hookup Accessories section below.

17.5 KWD Add to Cart

Flex Sensor 2.2'

A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance across the sensor increases. Patented technology by Spectra Symbol - they claim these sensors were used in the original Nintendo Power Glove. I love the Nintendo Power Glove. It's so bad!

The resistance of the flex sensor changes when the metal pads are on the outside of the bend (text on inside of bend).

Connector is 0.1" spaced and bread board friendly. Check datasheet for full specifications.

Note: Please refrain from flexing or straining this sensor at the base. The usable range of the sensor can be flexed without a problem, but care should be taken to minimize flexing outside of the usable range. For best results, securely mount the base and bottom portion and only allow the actual flex sensor to flex.

3.00 KWD Add to Cart

Force Sensitive Resistor - Square

This is a force sensitive resistor with a square, 1.75x1.5", sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. This FSR can sense applied force anywhere in the range of 100g-10kg.

Two pins extend from the bottom of the sensor with 0.1" pitch making it bread board friendly. There is a peel-and-stick rubber backing on the other side of the sensing area to mount the FSR.

These sensors are simple to set up and great for sensing pressure, but they aren't incredibly accurate. Use them to sense if it's being squeezed, but you may not want to use it as a scale.

Hook Up Guide

Video:

How to use Force Sensing Resistors

7.00 KWD Add to Cart

Force Sensitive Resistor 0.5"

This is a force sensitive resistor with a round, 0.5" diameter, sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be larger than 1MΩ. This FSR can sense applied force anywhere in the range of 100g-10kg.

Two pins extend from the bottom of the sensor with 0.1" pitch making it bread board friendly. There is a peel-and-stick rubber backing on the other side of the sensing area to mount the FSR.

These sensors are simple to set up and great for sensing pressure, but they aren't incredibly accurate. Use them to sense if it's being squeezed, but you may not want to use it as a scale.

4 KWD Add to Cart

FTDI to USB cable

The FTDI cable is a USB to Serial (TTL level) converter which allows for a simple way to connect TTL interface devices to USB. The I/O pins of this FTDI cable are configured to operate at 5V.

The FTDI cable is designed around an FT232RQ, which is housed in a USB A connector. The other side of the cable is terminated with a 0.1" pitch, 6-pin connector with the following pinout: RTS, RX, TX, 5V, CTS, GND (RTS is the green cable and GND is black).

This cable has the same pinout and functionality as our FTDI Basic Breakout board; you can use it to program your Arduino ProPro Mini and Lilypad. For use with those boards, align the black and green wires of the FTDI cable with the 'BLK' and 'GRN' labels on the PCB.

There are pros and cons to the FTDI Cable vs the FTDI Basic. The FTDI Basic has great LED indicators, but requires a Mini-B cable. The FTDI Cable is well protected against the elements, but is large and cannot be embedded into a project as easily. The FTDI Basic uses DTR to cause a hardware reset where the FTDI cable uses the RTS signal.

5 KWD Add to Cart

GAS DETECTION MODULE METHANE GAS SENSOR MQ-4

MQ-4 gas sensor sensitive material used in clean air conductivity is lower tin dioxide (SnO2). When the sensor is present in the environment in which the combustible gas, the sensor's conductivity increases with the concentration of combustible gases in air increases. Using a simple circuit can be converted to the change in conductivity of the gas concentration with the corresponding output signal. MQ-4 methane gas sensor for high sensitivity, propane, butane and has a good sensitivity. The sensor can detect a variety of flammable gases, especially natural gas, is a low-cost sensors for a variety of applications.

For home or factory methane gas, natural gas and other monitoring devices to test natural gas, methane 300 to 10000ppm;

1.5 KWD Add to Cart

GP2Y1010AU0F Optical Dust Sensor including wire,resistor and capcitor

GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the reflected light of dust in air. It is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems.

The sensor has a very low current consumption (20mA max, 11mA typical), and can be powered with up to 7VDC. The output of the sensor is an analog voltage proportional to the measured dust density, with a sensitivity of 0.5V/0.1mg/m3.

To interface with the sensor you need to connect to its 6-pin, 1.5mm pitch connector

 

4 KWD Add to Cart

Hall Effect Flow Meter YF-S201. (1-30 l/min)

This sensor is ideally suited to measuring liquid across it. The sensor outputs a pulse that is relative to the speed at which the internal pinwheel is being turned. This can be calculated by dividing the output pulse by 7.5, which produces the flow rate in litres per minute. This makes for a simple and effective method for monitoring watering/hydroponic systems as well as other fluid based control systems.

13 KWD Add to Cart

Hall Effect Magnetic Field Sensor 3144

The Hall Effect Magnetic Field Sensor 3144 is used to detect magnetic fields. When a magnet is near the sensor, it will output a logic low; otherwise it will output a logic high. Your robot’s microcontroller can read the output via a digital input pin. This sensor can be activated with small household magnets making it useful for a variety of purposes.

1.25 KWD Add to Cart

HC-SR04 Ultrasonic Sensor

HC-SR04 distance sensor is commonly used with both microcontroller and microprocessor platforms like Arduino, ARM, PIC, Raspberry Pie etc. The following guide is universally since it has to be followed irrespective of the type of computational device used.

  Power the Sensor using a regulated +5V through the Vcc ad Ground pins of the sensor. The current consumed by the sensor is less than 15mA and hence can be directly powered by the on board 5V pins (If available). The Trigger and the Echo pins are both I/O pins and hence they can be connected to I/O pins of the microcontroller. To start the measurement, the trigger pin has to be made high for 10uS and then turned off. This action will trigger an ultrasonic wave at frequency of 40Hz from the transmitter and the receiver will wait for the wave to return. Once the wave is returned after it getting reflected by any object the Echo pin goes high for a particular amount of time which will be equal to the time taken for the wave to return back to the sensor.

The amount of time during which the Echo pin stays high is measured by the MCU/MPU as it gives the information about the time taken for the wave to return back to the Sensor. Using this information the distance is measured.

Applications

  • Used to avoid and detect obstacles with robots like biped robot, obstacle avoider robot, path finding robot etc.
  • Used to measure the distance within a wide range of 2cm to 400cm
  • Can be used to map the objects surrounding the sensor by rotating it
  • Depth of certain places like wells, pits etc can be measured since the waves can penetrate through water

 

1.500 KWD Add to Cart