Circuits & Schematics - Interfaces - 7

3 in 1 universal converter. Based on FTDI FT232R chip seen as normal COM port, and two serial converters MAX232 and MAX485 . Allow to be used as RS232, RS485, or UAR TTL converter. Connections parameters can be set through the system, as in normal ...

Bernhard Linke A single IC produces a code that indicates which button is pressed. Sense multiple pushbuttons using only two wires figure 1Keyboards and numeric keypads often provide the user interface for electronic equipment, but many ...

Since I wanted to do some USB development work with the PIC18F4550 and PIC18F2550 board (for projects like my C64 VICE front-end and Atari joystick adaptor) I needed a USB reference board to develop the software. Initially I ported the Microchip ...

To test if external memory board works we are going to write a simple routine that tests if microcontroller can allocate memory heaps, write to and read from then. First of all we have to set up AVRStudio project. If your are going to use automated ...

Atmel AVR microcontroller Atmega128 is equipped with internal 4Kbytes of SRAM memory. Is it enough? Well it depends on what project it’s gonna hold. If your project must deal with loads of data or run larger RTOS code you will definitely run ...

Vishwas Vaidya Open-collector outputs are useful for transmitting buffered digital/pulse signals to the external world when high drive is needed. In harsh operating environments like automotive systems, however, these signals need to be protected ...

Recently I’ve working with the little but smart PIC18F14K50 (or your low voltage version, PIC18LF14K50 ). These chips are cheap (about $2,5 at Mouser) and have low pin count, but very impressive specs: USB V2.0 (low and high speed); NanoWatt ...

In the first part we have considered a circuit design and software of Host-part. The target-side consist of device minimum system based on ATmega162 and infrared hardware unit. Device minimum system consist of ATmega162, external SRAM 8 kbyte and ...

Rajendra Bhatt HD44780 based character LCDs require at least 6 I/O lines from microcontroller to display data. Therefore, they are not suitable for low-pin microcontrollers like PIC12F series microchips. In this project, I am going to show how to ...

Get 1.25V to 3.75V from an adjustable regulator Every PC has a USB (Universal Serial Bus) port that can supply 5V 5% at 500 mA for peripherals. Powered USB hubs also provide this power. You can use a USB port to power an external circuit, which is ...