The USB Performance monitor is a PIC18F2550 based device which shows the performance of your computer using two analogue meters and a RGB LED. The design is based around a stock Hi-Fi VU-meter which is controlled using PWM from the PIC18F microcontroller.
PIC based USB device
The hardware is based around the PIC18F2550 microcontroller which has on-board [...]

Mikroelektronika release a new EasyPS/2 Board. This tool can be used for connecting PS/2 device to your development board. There is on-board PS/2 connector that is needed in order to establish PS/2 communication. Also there is a DIP switch for configuring board connections. This board comes with selected examples for easier [...]

This project  allows instant start sequentially but a dozen low-voltage lamps 12 V / 60 W, and makes them fade and always sequentially (but slower). This system has been designed to meet the demand of a visitor who wanted ten recessed low voltage spot in a driveway to his house, with the following function:  – [...]

With the coach who started today we bring you a small number of items you can enjoy an 8-bit PIC Performance: the 18F2550. In this first installment will discuss the construction details and particularities of this coach. With the basic and necessary features of today, the development tool will help us to have a working [...]

The little clock is a clock pretty special. In addition to the time (as any clock that is worthy of the name), also shows the room temperature.The clock can indicate the hour and minutes with four 7-segment LED display in the format “HH: MM”, where “:” core consist of two small 3mm LEDs. These displays [...]

We live surrounded by batteries. Everywhere you look there are batteries.Excessive load time can end up destroying the battery. So how do we know when fully charged? Voltage Analyzer With that we show you, this is no longer a problem.The analyzer circuit is built around an LM324 quad operational amplifier (impossible not to have a [...]

This circuit allows switching on a LED when the battery voltage (12V) drops below a certain threshold. The operating system is based on a comparison of tension, which comes in a zener diode. If the supply voltage is 12V and the zener diode is a 10V model (this is the case in the diagram), we [...]

This project uses a Microchip PIC microcontroller, a serial EEPROM and a thermistor to create a temperature recorder. The temperature is measured and stored at user programmable intervals; this can be from 1 second to 256 seconds. The time interval is set by programming it and the start time into the EEPROM. The PIC is [...]

This is a good looking and practical device that can be useful in many areas where countdown timer is needed. This project is based on the PIC16F84A microcontroller. The time range can be adjusted between 1 and 999 seconds.   This project  has 3 buttons and one of them is named Set Button. In order to [...]

Whenever I’m away from home for an extended period of time, I would charge my phone and mp3 player from my laptop.  This way, I get about 3 or 4 full charges out of the laptop battery and I could leave the phone and mp3 player chargers at home. The device is based around a [...]

This project Temperature Display using an LM 35 temperature sensor and no less than 70 LEDs driven by a pair of 74ls47’s. Watch out for the format of the drill file, the decimal place is not included and the right 3 digits of each coordinate are fractional. The PCB is single sided and uses SMT [...]