female headers. * Arduino standard digital‚ analog‚ and special purpose pins exposed. * Digital I/O Pins: 14 (of which 6 provide PWM output) - Analog Input Pins: 6 * 2 X LED: one for power and another for pin 13. * Reset button. * 2 X 3-pin 0.1" (2.54mm) headers (5V) for small servos. * 2 X 2-pin 0.1" (2.54mm) header for brushed DC motors. * 6-pin 0.1" (2.54mm) ICSP male header. * 6-pin 0.1" (2.54mm) male header to accommodate FTDI USB programmer. * Flash
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ABSTRACT: The RF relay control‚ as the name suggests‚ operates at Radio Frequency. The corresponding frequency range varies between 30 kHz & 300 GHz. In this RF system‚ the digital data is represented as variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK). Transmission through RF is better than IR (infrared) because of many reasons. Firstly‚ signals through RF can travel through larger distances making it suitable
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the avr microcontroller and embedded system using assembly and c [pic] MUHAMMAD ALI MAZIDI SARMAD NAIMI SEPEHR NAIMI the avr microcontroller and embedded systems using assembly and c MUHAMMAD ALI MAZIDI‚ SARMAD NAIMI‚ AND SEPEHR NAIMI [pic] The AVR microcontroller from Atmel is one of the most widely used 8-bit microcontrollers in the world. In this book the authors use a step-by-step and systematic approach to show the programming of the AVR chip
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TSOP1738 of the circuit. Pin 1 of TSOP1738 is connected to ground‚ pin 2 is connected to the power supply through R5 and the output is taken from pin 3. The output signal is amplified by Q1. The amplified signal is fed to clock pin 14 of decade counter IC CD4017 (IC1). Pin 8 of IC1 is grounded‚ pin 16 is connected to vcc and pin 3 is connected to D2 (Red LED)‚ which glows to indicate that the appliance is ‘off.’ The output of IC1 is taken from its pin 2. D3 connected to pin 2 is used to indicate
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not conduct. Consequently‚ transistor T2 conducts and pin 4 of IC1 is low. This low voltage disables IC1 and it does not oscillate. The low output of IC1 disables IC2 and it does not oscillate. As a result‚ no sound is heard from the speaker. But when the tank gets filled up‚ transistor T1 conducts. Consequently‚ transistor T2 is cut off and pin 4 of IC1 becomes high. This high voltage enablesIC1 and it oscillates to produce low frequencies at pin 3. This low-frequency output enables IC2and it also
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eliminating the need for an external dc power supply. The timer generates a square-wave output of amplitude +5V at a specific frequency (depending on the values of R1‚ R2 and Cx) through pin no. 3. The output of the timer is connected to pin no. 2 of the Arduino. Since this pin of the Arduino is a hardware interrupt pin (called Interrupt 0)‚ the source code (“capacitance.ino”) uploaded to the Arduino uses an interrupt-handler which is executed whenever the timer output makes a LOW-to-HIGH transition
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Si4010-Key Fob-DK Si4010 K EY F O B D EVELOPMENT K IT U SER ’ S G UIDE 1. Key Fob Development Platform The Si4010 key fob development platform is a flexible platform for comfortably developing software and testing the whole system using the Silicon Laboratories software development IDE. The platform also allows programming of the NVM on chip. The kit has two versions: one for the 434 MHz band (P/N 4010-DKKF_434) and one for the 868 MHz band (P/N 4010-DKKF_868). 1.1. Kit Content Table 1. Kit
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School of Engineering and Technology Axxium Limited‚2e Queensway Enterprise Centre‚ Stem Lane‚Hampshire‚BH25 5N T2640 Electric Escape Lock Supervised by : Johann Siau Prepared by : ZABER RIZVI The project consisted of developing hardware circuitry (PCB etc.) and software development for the Electric Escape lock which has selfactivated mechanism and access control system. The PCB design was created from the specifics of the physical lock unit using Altium designer. The microcontroller
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Frequencies Linearity Mounting in Any Orientation Temperature Limitation EMI* Resistance Mechanical Durability Coil and Magnet Velocity Sensor Piezoelectric Velocity Sensor Yes No Yes Yes Acceptable Excellent No Good Sensor Dependent > +707°F (+375°C) Acceptable Good Yes Good Yes +248°F (+120°C) Excellent Excellent *EMI–Electro Magnetic Interference Traditional velocity sensors are of a mechanical design that uses an electromagnetic (coil and magnet)
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is a simple remote control circuit based on infrared sensor IC TSOP1738. TSOP1738 contains photo detector and pre-amplifier both in one package. It is a three terminal device. Pin 1 is for ground‚ Pin 2 is for power supply and pin 3 is used as output. Pin diagram of TSOP1738 is shown below. Take care while connecting the pins of TSOP1738. Wrong lead connection of TSOP1738 may lead to sensor damage. CD4017 is a CMOS counter/ divider IC. It takes clock signal from the clock input and turn on the 10
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