From the displayed patterns can be seen that the relays connected to the RB ports on the microcontroller and the RB3 – RB6. Over MAX232 interface circuit is connected to the serial port of your PC. Command is done the program done in Visual Basic in the PC. Led6 uses LEDs for indication of incorrectly received signal from the PC (triple blink).
Source: Milan Milovanovic
You must be logged in to post a comment.
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: – [...]
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 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 [...]
A VU meter is often included in audio equipment to display a signal level in Volume Units; the device is sometimes also called volume indicator (VI). In this project we are building a basic and low cost LED VU Metre circuit . The extent (range) display is -18 dBu to +3 dBu, spread over [...]
Today we have a new category “Projects” and a new electronic project 12 Channel LED Chaser with PIC16F84A.
This project is based on the popular PIC16f84A micro-controller.The heart of this project LED chaser is the PIC16F84A PIC microcontroller.A 4MHz crystal and capacitors C1 and C2 22pf is used for providing clock pulses to the micro-controller. The [...]
February 8th, 2010 at 22:56
I wonder if the com port could be replaced with a USB connection. This is good physical computing projects.
February 9th, 2010 at 00:19
Hi Jay you can find here:
- RS232 to USB Converter
- USB to RS232 Using Atmel ATtiny2313 or ATmega8