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23 Nov 2011

circuitvalley.com writes:

This is General purpose Temperature meter for measuring Temperature from -55 ºC to 150 ºC ..It is a very useful bench test equipment for testing and finding out the temperature of various devices with unknown temperature such as room temperature , cpu cabinet, etc. The meter provides very stable readings and has excellent input sensitivity thanks to LM 35 Temperature sensor from National Semiconductor , so it can even measure small temperature change.

The LM35 is three terminal temperature sensor which gives output in the form of analog voltage. LM35 linear to the whole temperature range it generate 10 mV/ºC. this analog voltage is feed to the internal 10 bit analog to digital convertor of the PIC 18F458 which convert it into temperature and then display to the NOKIA 3315/3310 LCD.

Nokia 3315 LCD Based Temperature Meter - [Link]

23 Nov 2011

circuitvalley.com writes:

USB Input / Output Board is a quick little development board which replace parallel port . USB IO Board is compatible with Windows computers on HID class which means direct plug like USB mouse or keyboard . When attached to Windows IO board will show up as Found new hardware “Microembeded USB IO” and get installed automatically. You can control 16 individual microcontroller I/O pins by click of a button or entering the hex value of the two 8 bit ports. USB Input / Output Board is self-powered by USB port and can provide up to 500mA for electronic projects. USB IO Board is breadboard compatible. Simply solder included 8-PIN headers on PCB and the board can be plugged into a breadboard for quick prototyping.

PIC 18F4550 USB IO (Input / Output) Board with Analog - [Link]

23 Nov 2011

circuitvalley.com writes:

Displaying content on a normal alphanumeric display is very limited ,we have to be limited with the font size and we can’t draw any graphics also. but convention Graphics lcd are really very expensive so here is the solution, you can use Nokia 3315 monochrome LCD to display your large font text and graphics . the reason behind using this LCD is ,it is really very cheap and can be powered with 3 volts supply. so it is really good for battery powered application.

Nokia 3315 LCD interfacing with Microcontroller - [Link]

23 Nov 2011

circuitvalley.com writes:

This is very accurate home made LC inductance/capacitance meter built with very common components which are very easy to find all around . The range of this LC Meter is extremely good at measuring very low value of capacitance and inductance.

LC Meter’s Inductance Measurement Ranges:

  • 10nH – 1000nH
  • 1uH – 1000uH
  • 1mH – 100mH

LC Meter’s Capacitance Measurement Ranges:

  • 0.1pF – 1000pF
  • 1nF – 900nF

Very Accurate LC inductance / Capacitance Meter - [Link]


23 Nov 2011

circuitvalley.com writes:

The Serial Peripheral Interface (SPI) is one of the popular embedded serial communications widely supported by many of today’s chip manufacture and it considered as one of the fastest serial data transfer interface for the embedded system. Because of its special in/out register configuration, the SPI master device could transfer its data and at the same time it receive a data from the SPI slave device with the clock speed as high as 10 MHz. Beside its superior data transfer speed; SPI also use a very simple data transfer protocol compared to the other serial data transfer methods. When the SPI master device want to send the data to the SPI slave device then the SPI master will just simply shifting its own data through a special 8-bits register and at the same time the SPI master will receive the data from the SPI slave into the same register as shown on this following picture.

Microchip SPI Basics Tutorial For PIC18 - [Link]

23 Nov 2011

circuitvalley.com writes:

This is 60 MHz frequency meter / counter for measuring frequency from 10 Hz to 60 MHz with 10 Hz resolution.It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc. The meter provides very stable readings and has excellent input sensitivity thanks to on board amplifier and TTL converter, so it can even measure weak signals from crystal oscillators. With the addition of prescaller it is possible to measure the frequency of 1GHz and above.

60 Mhz Frequency Meter / counter - [Link]

23 Nov 2011

 

circuitvalley.com writes:

The PICkit™ 2 Programmer/Debugger is a low-cost development tool with an easy to use interface for programming and debugging Microchip’s Flash families of microcontrollers. The full featured Windows programming interface supports baseline, mid-range, PIC18,8-bit, 16-bit, and 32-bit microcontrollers, and many Microchip Serial EEPROM products. With Microchip’s powerful MPLAB Integrated Development Environment (IDE) the PICkit 2 enables in circuit debugging on most PIC microcontrollers. In-Circuit-Debugging runs, halts and single steps the program while the PIC microcontroller is embedded in the application. When halted at a breakpoint, the file registers can be examined and modified.

Pickit 2 clone The Universal Microchip PIC Programmer / Debugger - [Link]

23 Nov 2011

circuitvalley.com writes:

USBasp is a USB in-circuit programmer for Atmel AVR controllers. It simply consists of an ATMega48 and ATMega88 an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is needed.

Features

  • Works under multiple platforms. Linux, Mac OS X and Windows are tested.
  • No special controllers or smd components are needed.
  • Programming speed is up to 5kBytes/sec.
  • SCK option to support targets with low clock speed (< 1,5MHz).

USBasp – USB programmer for Atmel AVR controllers - [Link]

23 Nov 2011

circuitvalley.com writes:

This simple COM PORT based AVR atmega Programmer will allow you to painlessly transfer hex programs to most ATMEL AVR microcontrollers without sacrificing your budget and time. It is more reliable than most other simple AVR programmers available out there and can be built in very short amount of time.

AVR programmer consists of in-circuit serial programmer (dongle) and small pcb with a DIP socket where you can fit your microcontroller and have it quickly programmed.

AVR Serial Port Programmer - [Link]

22 Nov 2011

jumperone.com writes:

I’ve got a new tool on my workbench – portable fume extractor. It’s 92mm fan that works from 4 AA batteries and has a variable speed. Mobility is a really good thing, especially when you’ve got a tons of equipment and cables on a bench you can drown in.

Portable Fume Extractor / Fan - [Link]



 
 
 

 

 

 

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