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Showing posts with the label 7

Hofner Colorama II restoration project part 7 applying the decal and lacquering the neck

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In the previous post, we set about making a replacement decal for the neck on this vintage Hofner Colorama II. Before we lacquer the neck, we need to apply the decal. The decal is printed on special laser waterslide decal paper. This paper just prints on a standard laser printer. It’s also possible to get inkjet waterslide decal paper, but just note that an inkjet printout requires that you spray a layer of lacquer over the printed decal before you let it anywhere near water. So first we put some not-too-hot/not-too-cold water in a little dish and place the decal in there, making sure to submerge it. After a minute or so you will notice that it starts to separate from the paper. You can test this by seeing if it will slide around on the paper, but don’t force it too much. While we are waiting for the decal to reach this separation stage, it’s a good idea to spread just a little bit of water on the area where we will apply the decal. This helps to prep the surface for what is to come. O...

DS18B20 1 wire communication LED temperature display 7

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Today we are all going to learn chip DS18B20 temperature. I Characteristics: The specification of the sensor DS18B20 can mention briefly as follows: • Use a wireless interface should just have one leg out to the media. • It is possible to measure the temperature in the range of -55 -> +125 oC.Voi temperature range -10 ° C to + 85 ° C, the accuracy of ± 0.5 ° C.Co temperature warning function sweeping away the value given. • Voltage: 3 - 5.5 V, you can configure multiple encryption level from 9-12 bits The greater the number of bits precision hon.Thoi conversion time is 750ms maximum temperature for 12 bit encryption • Current consumption in sleep mode tiny. • Each sensor has a unique identification code stored in memory 64-bit on-chip ROM (on chip), binary values ​​are laser engraved. • If configured for DS18B20 under 9,10,11,12 bit precision, we have respectively: 0.5 ° C, 12:25 ° C, 0125 ° C, 0.0625 ° C.Theo default manufacturer if they It is not configured mode, it will automatic...

PIC16F887 877 programming in C Tutorial 7 LCD Moving Display n Custom Characters

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LCD; Moving Display & Custom Character : You can display your custom characters by using mikroc custom character tool. Go to tools>>customer character then make the character you want to display. After this click on 'generate code'. It will generate a customchar function just copy and paste above the main function. customchar has two parameters; row and position in that row. Just pass these parameters where you want to see your custom character on LCD. You can also move the text, left and right, on LCD screen; by using the LCD commands. _LCD_SHIFT_LEFT and   _LCD_SHIFT_RIGHT are the commands. There are various other commands in mikroc, i forget to tell you in lcd tutorial, these are: LCD Commands Now lets write a code to display and move the custom character, back and forth, (of your choice) on LCD screen. Code: // LCD module connections sbit LCD_RS at RB4_bit; sbit LCD_EN at RB5_bit; sbit LCD_D4 at RB0_bit; sbit LCD_D5 at RB1_bit; sbit LCD_D6 at RB2_bit; sbit LCD_D7 ...

8 Digit 7 Segment LED Display with SPI Interface

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The following display features eight 7-segment displays arranged in two rows of four digits. The on-board MAX7219 driver enables you to easily add eight 7-segment LED displays to your project using only 3 I/O pins of microcontroller. The major advantage of using this board is the time-division multiplexing operations required for continuous refreshing of the display digits are performed by the MAX7219 chip, thereby keeping the microcontroller free for doing other pressing tasks. It is suitable for displaying two variable values simultaneously in a project, such as displaying temperature and humidity, or current and voltage, etc. [ ]

Toshiba Excite 7 Android Tablet Announced

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Toshiba has announced Excite 7, its latest Android tablet. If you’re looking for a balance option between price and performance, the 7-inch tablet may be able to catch your eyes. Toshiba Excite 7 is a budget friendly and high performance Android tablet that runs on Google Android 4.2.2 Jelly Bean mobile operating system. The Android tablet is powered by Rockchip RK3188 quad-core processor, and comes with 1GB RAM, 8GB eMMC internal storage, 7-inch capacitive 5-finger multi-touchscreen LCD display with 1024 x 600 pixels resolution, 0.3-megapixel front-facing webcam and 3-megapixel rear camera. Moreover, other specs also include WiFi, Bluetooth 4.0, microSD card slot, stereo speakers and 14W-hours rechargeable battery for up to 8 hours of video playback. Toshiba Excite 7 Android tablet is priced at $169.99 USD. If you’re interested, jump to Toshiba official site for more details.

7 SEGMENT DISPLAY COUNTER INCOMING PERSON COUNTER

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Hiii…….friends today I am here with a very interesting projects for those who have just started with electronics. With this project we can display 0-9 digits on the 7 segment and we can count the no of persons entering in a room.  Circuit Diagram Here a counter IC 7490 is used along with BCD to 7 segment decoder IC 7447. The function of 7490 is to provide the counting value and decoder IC is decoding that value to 7 segment output . Every time when you will push the switch the clock of IC7490 will be triggered and as a result count will increase by 1 . Hence with this simple project we can display numbers 0 to 9 on seven segment display just by pressing switch. It’s a very easy circuit and you can easily implement it on a general purpose PCB . NOW ITS TIME TO MAKE USE OF THIS CIRCUIT IN COUNTING THE NUMBER OF PERSONS ENTERING IN THE ROOM...... LETS SEE HOW….?? So instead of using switch we will use LDR here , we will place LDR at the entry door in such a manner that the shadow of t...

Nokia could launch entry level Windows Phone 7 5 handsets says report

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Nokia may offer entry-level Windows Phone 7.5 devices by year's end, according to DigiTimes. Citing the usual "industry sources," DigiTimes said the new phones would be aimed at consumers in emerging markets, who are considered more price-sensitive. The hardware requirements for Windows Phone 8 are stricter than those for its predecessor, demanding a dual-core processor and support for near-field communication (NFC). Those features would be difficult to add to more entry-level and mid-level phones, according to the sources, prompting the need for less pricey Windows Phone 7.5 devices. (Credit: Josh Miller/CNET ) 

7 segment display Arduino

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The aim of this article demonstrate how the Arduino can run on 7-segment display.   We used a SA56-11GWA which is a single display with common anode, it means that the anode is common to all digits, and to the point. A display consists of 8 LEDs, 7 form the figure and 1 point decimal.A conversion between decimal and what we intend to show the binary information that you receive is called the BCD (Binary Coded Decimal). In terms of hardware, each LED work individually, so each of the segments has to lead a limiting resistor, in this case, each digit has an operating voltage of 2.2V and consumes 20mA.   If the voltage is 5volts, we need the resistor fall 5-2.2 = 3.8V, by Ohm's Law we can calculate, R = V  res  / I  led  R = 3.8 / 0.020 = 190 Ω +/- 20% (let's use a resistor with 220Ω).   This applies to this display SA56-11GWA used as an example, other values ​​may be different, it is useful to calculate the required resistance value. Decimal The A  ...

Simple Dice With 7 Segment Display Circuit Project

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Simple Dice With 7-Segment Display Circuit Project. A simple digital dice circuit can be easily realised using an astable oscillator circuit followed by a counter, display driver and a display. Here we have used a timer NE555 as an astable oscillator with a frequency of about 100 Hz. Decade counter IC CD4026 or CD4033 (which-ever available) can be used as counter-cum-display driver. When using CD4026, pin 14 (cascading output) is to be left unused (open), but in case of CD4033, pin 14 serves as lamp test pin and the same is to be grounded. Digital Dice With 7-Segment Display Circuit diagram The circuit uses only a handful of components. Its power consumption is also quite low because of use of CMOS ICs, and hence it is well suited for battery operation. In this circuit two tactile switches S1 and S2 have been pro-vided. While switch S2 is used for initial resetting of the display to ‘0,’ depression of S1 simulates throwing of the dice by a player.  When battery is connected to the...