Fibre glass reinforced, 1 1/4" cut off wheels/disc for dremel/rotary tools 10pcs for 250php

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4x4 Matrix Array 16 Keys 4*4 4 x 4 Switch Keypad Keyboard Module for Arduino

This 4x4 Keypad Matrix lets you quickly add controls to your electronics projects. It offers 0-9 numerals, A-D letters, and standard star(*) and hash(#) symbols.

Features:
16 Button Matrix
0-9 # * A-D
Excellent price-performance ratio
Easy communication with any microcontroller


Package Included:
1 X 4x4 Matrix Array 16 Keys 4*4 4 x 4 Switch Keypad Keyboard Module for Arduino

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HT8950A Voice Modulator DIP16

Package Includes:
1 x HT8950A Voice Modulator DIP16

Datasheet:
http://pdf1.alldatasheet.com/datashe...K/HT8950A.html

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Heart Rate Pulse Sensor Pulsesensor Sensor Module For Arduino Raspberry pi

1. About Pulsesensor
Pulse sensor Arduino is used to test the heart rate sensor, students, artists,athletes, creator, game developer, or mobile terminal can develop interactive work related to heart rate.
Sensors can be put on the finger or earlobe, through interconnected line can be connected to the Arduino. It also has an open source app, can real time your heart rate graph display.
Essence is a integrated optical amplifying circuit and noise eliminating circuit heart rate sensor.
2.Parameter

1). The power supply voltage: 3.3V ~ 5 v

Package Includes:
1 x Heart Rate Pulse Sensor Pulsesensor Sensor Module For Arduino Raspberry pi

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