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The Most Incredible 50MHz Frequency Counter That You Have Ever See!

If you think you’re very familiar with frequency counter, then you should have a look on this 50MHz frequency counter (Honestly, you’ll be amazed by this magnificent 50MHz frequency counter)! Oh, for those that don’t know what the frequency counter for, it’s an electronic instrument or component that being used for measuring frequency. In normally case, most frequency counters works by using a counter to measure the number of oscillations or pulses per second. After a period, such as 1 second, the value in the counter is going to be transferred to a display. In the same time, the counter is reset to zero. This 50MHz frequency counter is based on a 28-pin device PIC16F876, which it is capable of driving 4 digit LED display in multiplexed mode. Beside of measuring frequency, it can also be used to handle two analog inputs to display SWR/PWR signal strength in a bargraph. This means, by using this 50MHz frequency counter, you don’t have to apply any external LED display driver chip or external data EEPROM anymore, as it already implemented in PIC16F876.… Continue reading

Dual Tone Multi Frequency Decoder 2

You’re too bored with your daily life and want to try on something different? If you have interests on the Dual Tone Frequency Decoder (DTFM), then you must check this out… The DTMF decoder 2 is a very easy to use program to decode DTMF dial tones that being found on telephone lines with touch tone phones. You can view the decoded digits on a 16×2 LCD screen. The DTMF decoder can be directly connected to a Serial port, in order for the user to view the digits in Hyper Terminal on a computer. The DTMF decoder 2 will store the last 234 received digits in EEPROM and the contents of EEPROM can be seen on the LCD screen through two scroll buttons. The total power consumption of this DTMF decoder 2 is 12mA. The DTMF has two different inputs: a RJ11 jack (It’s use for connect to the phone line) and a 1/8″ audio jack (It’s for connect to a scanner, tape recorder or audio output device). Beside that, you can use this DTMF decoder 2 for receiving data… Continue reading

The Best Three in One Electronics Components That Has Ever Create!

Have you ever thought of combining the three different electronic components together? If you have not done it yet, then you should try it because it’s a fun experiment indeed! The three electronics components that you’re going to combine would be 50 MHz frequency counter, voltage meter and SWR/PWR indicator. This is a very cool project for all hobbyists. Basically, it’s a PIC16F876 based 4-digit LED frequency-counter and voltmeter. Don’t underestimate this stuff, as it is capable of driving 4 digit LED display in multiplexed mode while measuring frequency, power supply voltage or handle two analog inputs at once to display SWR/PWR signal strength in a bargraph! As a result, it doesn’t need any external LED display driver-chip or external data EEPROM, since it’s already implemented in PIC16F876. When fewer chips are being used in the project, the whole project will become smaller as well! There is a push-button in the operating mode, where it allows the user to choose between the frequency, bargraph or supply voltage to be displayed. Furthermore, the frequency display mode can also be changed with… Continue reading

Welcome to the Wonderful Internet Plug II World!

For those of you here that have the Internet Plug, you’ll realize that it’s a very useful tool. However, it’s still has one downfall, where there is no password protection was available for the Site Player and this is quite unsafe for the user! Now, with the Internet Plug Version II, you’ll get this problem solve instantly! Well, it’s not a hard task to develop this Internet Plug II, all you need to do here is attach a 16F877 processor to the Site Player. After it, the Internet Plug is became Password Protected and the status of the exits is saved in EEPROM (this to prevent the data loss in case of a power failure.) The main objective for this project is to show a simple and effective application for home use, thus the Internet Plug is a web-enabled appliance that you can easily plug it on, as long as you find the power resource. The simple concept and implementation make this project unique. All you need here is a plastic box with a three Power outlets and a computer… Continue reading

The Best Self made Blinking LED matrix – Blinkomat!

Some of the people love the “blink, blink things” and they just can’t help themselves when they discover this kind of stuff! Well, if you’re one of them, then you should try to develop this LED matrix – Blinkomat! You would need to use an Atmega16 Microcontroller by Atmel that running at 16MHz for controlling the LEDs. It has 16KB of Flash memory, 1KB of SDRAM and 512 Bytes of EEPROM. Since it has 32 I/O lines, you only have to choose 12 and the others as dimensions for the LED matrix. As a result, it has 12 rows and 20 columns making 240 LEDs totally, where you can drive directly through the 32 I/O lines easily. The only problem that you’re going to face here is no I/O line left for input purpose. The LEDs can be switched on and off line by line by using time multiplexing. Honestly, this can be done via a timer interrupt. Hence, every time when the interrupt occurs, you will need to switch to the next line of LEDs. By the way, those… Continue reading

The Versatile Development Board for AVR microcontrollers ATmega48/88/168

For those of you here that always involved yourself with the AVR microcontrollers, have you ever wished to build a multipurpose development board that compatible with all type of AVRs microcontrollers, such as ATmega48, 88 or 168? Well, you can simply use this board for testing and debugging embedded programs since it has many built-in peripherals connected to microcontroller. Thus, you can use them without even a further soldering or modification! Ok, I know it sounds unnecessary here, but for those that never ever used any ATmega microcontrollers before, you should know that they have many great features, which as: Easy to adjust I/O, Timers, PWM generators, ADC, RS232, TWI, SPI, Analog Comparator, Osillator, EEPROM etc. The main reasons why you should use these microcontrollers because they’re very versatile, easy to program and having an easy to use interface as well! Since this development board has been specially designed, thus you can apply it to use with ATmega (4kB), Atmega (8kB) or ATmega (16kB). Hope you will enjoy this development board project and until then, see ya! Continue reading