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Does this sound familiar to you? After spending many hours on optimizing for speed and memory your super-duper MCU application, you can only conclude that it will not run on an Arduino board. You have built the shield (the Arduino compatible extension board) with your special I/O and you wrote most of the software, but these last functions that should add that finishing touch just don’t fit in the board’s memory. Maybe Rascal can help? Built around a 400 MHz AT91SAM9G20 ARM9 from Atmel, the Rascal is an open source Linux board compatible with Arduino extension cards or shields. Programming the board is easy thanks to a library written in Python from Pytronics that allows easy access to peripherals and shields. The Rascal’s firmware comes with a web server that can serve as a programming interface; you can write your applications directly in a web browser connected to the Rascal board.[ ]

 This can be a complete project on its own - a simple DIY digital thermometer with LCD display and only a handful of parts - the PIC18F45K20, LM35 and a small number of resistors and capacitors running off a regulated 5v supply. Display type - LCD (can be 16x1, 16x2 or anything larger) Controller: PIC18F45K20 Programming Language: BASIC Compiler: mikroBASIC PRO for PIC v3.20 ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''...

This is the Simple Temperature sensor and DVM interface Circuit Diagram. The DVM gives a direct indication of the temperature of the sensor in degrees Centigrade. The temperature sensor IC1 gives a nominal 1 µ per degree Kelvin which is converted to 10 mV per degree Kelvin by Rl and VR1. IC2 is a micropower, low input drift op amp with internal voltage reference and amplifier.   Simple Temperature sensor and DVM interface Circuit Diagram The main op amp in IC1 is connected as a voltage follower to buffer the sensor voltage at Rl. The second amplifier in IC1 is used to amplify the .2 V internal reference up to 2.73 V in order to offset the 273 degrees below 0°C.The output voltage of the unit is the differential output of the two op amps and is thus equal to 0.01 V per °C. Sourced By: Circuitsproject

Valid schematic circuit diagrams of fluorescent lamps with a voltage source using 12 volt battery. This circuit 12 volt fluorescent lamp is very useful if the power goes out or can be used in a dark place with no electricity , but can use  the battery 12V . This 12V fluorescent lamp circuit i have tried and the results are bright , durable until decades. You can use 12Volt fluorescent lamps up to 40W . Use quality 12 Volt fluorescent lamp, do not use the fast heat , because the fast was also damage the transistor at 12Volt fluorescent lamp circuit . Do not occasionally mistaken in putting up the transistor . Description for 12 volt fluorescent lamp Circuit Diagrams : R1 = 220R/0.5W R2 = 1/0.5W C1 = 100n/100V C2 = 220uF/50V Q1 = D1885/D1710 A/B= To A fluorescent lamp/ and B to B fluorescent Lamp and just use one pin B = Battery 12 volt with currents above 5A Roll of copper wire on ferrite rod, with : L1 = 1.2 mm diameter wire with many loops winding 20 times L2 = 1.2mm di...

Today we have a guest post by my good friend Adam. I gave him some advice and tips, but he did all of the work himself. I’ll let Adam take it from here: “I found this guitar at the bottom of my in-laws’ stairwell. It was being thrown out. When I touched the gig bag it was in, my fingers came away black with dust and grime yet inside was this near perfectly clean guitar. I did a bit of a quick clean and initial set up but now it’s time to get serious and get her playing and looking right. She’s an Epiphone Strat copy. I’d expect Scarlet to be getting on for 18-20 years old too. Further search reveals it to be an Epiphone S310 Batwing Stratocaster. This large cavity was what I was hoping for rather than the intricately routed ones on Fenders and Squires. It will make coating the cavity easier with copper sheeting. It also means I may be able to buy a Fender tortoiseshell guard. The pickups were set in different positions to a Fender and I was worried that if the cavity was shaped like a ...

Here is some important ADVANTAGES and DISADVANTAGES OF RC PHASE SHIFT OSCILLATORS ADVANTAGES OF RC PHASE SHIFT OSCILLATOR. 1. It is cheap and simple to design because it contains only one transistors with some Resistors and Capacitors. 2. It provides good Frequency stability. 3. Circuit is simpler than other OSCILLATOR. 4. It doesn't need any negative feedback and stabilisation arrangements. 5. The output is Sinusoidal so it is quite Distortion Free. 6. Having wide operating Frequency range. 7. Also suitable for low Frequencies. DISADVANTAGES OF RC PHASE SHIFT OSCILLATOR. 1. The output is small due to smaller feedback. 2. It is difficult for the Circuit to start oscillations. 3. The Frequency stability is not so Good. 4. It requires high Vcc. For large feedback. Back to MYCIRCUITS9

Advantages and Disadvantages of Moving Iron Instruments Advantages 1.        The instrument can be used both on DC as well as on AC circuits. 2.        These instruments are cheap, robust and simple in construction. 3.        The instruments have high operating torque. 4.        The instruments are reasonably accurate. 5.        These instruments can withstand overload momentarily. Disadvantages 1.        Scales of these instruments are not uniform because of pneumatic damping. 2.        Errors are introduced due to change of frequency I case of A.C. 3.        Errors are introduce due to hysteresis and stray magnetic field. 4.        Power consumption is high.

This is the Cheap and Simple Gate Alarm Circuit Diagram. A cheap and simple gate alarm made from a single CMOS Integrated Circuit.    Cheap and Simple Gate Alarm Circuit Diagram Circuit Notes Figure 1 represents a cheap and simple Gate Alarm, that is intended to run off a small universal AC-DC power supply. IC1a is a fast oscillator, and IC1b a slow oscillator, which are combined through IC1c to emit a high pip-pip-pip warning sound when a gate (or window, etc.) is opened. The circuit is intended not so much to sound like a siren or warning device, but rather to give the impression: "You have been noticed." R1 and D1 may be omitted, and the value of R2 perhaps reduced, to make the Gate Alarm sound more like a warning device. VR1 adjusts the frequency of the sound emitted. IC1d is a timer which causes the Gate Alarm to emit some 20 to 30 further pips after the gate has been closed again, before it falls silent, as if to say: "I'm more clever than a simple on-off devic...

Welcome friends to our website. In this article I will give you the list of electronics shop available in Balasore, India so that you can find then very easily. I also give you a very short component list with their price just to give you a idea about the price of component. Before I give you the list I want to make you conform that this article is available for a short period of time and will be removed without any prior information. One most important thing you must know that our team member are working hard just to help the people like you, we don’t have any profit or we are not calming any money for showing the name of the shop in our website. This article is only for helping purpose. THE LIST OF ELECTRONICS SHOP AVAILABLE IN BALASORE: 1. DURGA ELECTRONICS. DESCRIPTION: DURGA ELECTRONICS is dealing with manufacturing and repairing of LED lightings. Durga Electronics also sales LED, resistors, transistor, capacitor, IC, IC holder, diode, transformer etc. LOCATION: When you travel fr...

The supply receive from 220 /120/110 Volt AC , then lowered by the transformer . Then receives +20 Volts DC from rectifier / filter section. This applied to pin 11 and 12 of the IC uA723/LM723 , as well as to the collector of the 2N3055 series pass transistor. The output through R1 and R2, providing about 7 V with respect to ground at pin 4. The reference terminal at pin 6 is tied directly to pin 5 , the non inverting input of the error amplifier . For fine trimming the output voltage , a potentiometer can be installed between R1 and R2. A 100-pF capacitor from pin 13 to pin 4 furnishes gain compensation for the amplifier. Base drive to the 2N3055 pass transistor is furnishes by pin of the uA723. Since desired output of the supply is 1 Ampere, maximum current limit is set to 1,5 Ampere by resistor Rsc whose value is 0,422 Ohm. A 100uF electrolytic capacitor is used for ripple voltage reduction at the output. A 1 kOhm output resistor provides stability for the power supply under no - lo...

            An automatic mobile speed violation detection and response system for identifying vehicles traveling in excess of a predetermined speed and providing a response to this violation is proposed. The mobile speed violation detection device includes: measurement of target vehicle speed and outputting signal indicative of the measured speed; capturing license plate data on the RF ID tag affixed to the target vehicle when vehicle exceeds the predetermined speed; identifying the location of the speed violating vehicle; tagging the captured RF ID based license plate data with vehicle speed and location data; wireless communication of transmitting speed, license plate data, location data and local speed limit to and from the information system.             This system is designed to monitor and control the speed of vehicles through wireless network. Zigbee is used for wireless communication in th...

This Power Pulse Using by LM350 and NE555 Circuit Diagram can use to drive lamp,power LED,DC motor etc. Adjust R5 for output amplitude.Adjust R1 for output power .The LM350 is adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range.This circuit requires 5-15V power supply. Power Pulse Using by LM350 and NE555 Circuit Diagram  

Schematic and Printed Circuit Board - TCL 21A71A-PAL/NTSC CRT TV Used ICs:  TDA7266 – TMPA8873 – 24C08 – TDA4864AJ – MSP3425G – TEA1506P (SMPS Control) Chassis 40-M123SP- MAK1X-M123SP CIRCUIT DIAGRAM PWB CLICK ON THE PICTURES TO ZOOM IN

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Direct Coupled Amplifier The direct coupled amplifier suits well for very low frequency applications. Since the circuit especially works at low frequencies, the coupling capacitor and transformers are not used because the electrical size of these components become very large at these frequencies. The above fig shows the circuit of three stage direct coupled amplifier. It uses complementary transistor. Thus, the first stage uses npn transistor, the second stage uses pnp transistor and so on. In this circuit the output of first transistor is directly connected to the input of second transistor. Working: The weak signal is applied to the input of first transistor T 1 . Due to transistor action, an amplified output is obtained across the collector load R C of transistor T 1 . This voltage drives the base of the second transistor and amplified output is obtained across its collector load. In this way, direct coupled amplifier raises the strength of weak signal. Advantages and Disadvantages...