Electronic Fifteen LED Roulette

The following was submitted on July 11th, 2007. Message: I want to combine Ne555 with 74154 IC.The indication of the outputs must be shown with LED’s but up to so far it need 15 outputs ,is it possible the way i did? if not i will need your assistance

Mail from CY

LED running lights are used to decorate Christmas Trees, Festival Surroundings and even  Buildings. A Clock and a counter are basically required. Many LEDs can be used in parallel with driver transistors. Upto 15 count is is good enough. Many colors can be used and with a PWM or VCO you can make it Audio or Music effects lights like strobe lights.

Electronic Fifteen LED Roulette

Electronique Réalisations – Roulette

Multi-Colored LEDs and drivers and even PIC microelectronics with Visual Effects in the form of ROM tables can make Alphabets and Numbers appear in LED arrays. Some have made Mini Ocillosocpes and Toy Spectrum Analyzers too in LED DOT Matrix Arrays.
LED Sequencer Circuit

The above circuit is another variation of a basic LED sequencer circuit. Note again the use of the 555 as a clock. The 555 is likely one of the most versatile chips ever invented. The output of the 555 is coupled to a 4017 Decade Counter Divider another very widely used chip

555 and CD4017 Running Lights

delabs

Proto-PIC – Prototyping for Hobbyists

eShop and How-To Videos for anyone who has an interest in Microcontroller Programming & Development. Components and Kits for the Electronics Enthusiast.

Proto-PIC – Prototyping for Hobbyists

A site designed for electronics and prototyping hobbyists and enthusiasts. This site has grown and is now a useful knowledge base and online shop for anyone who has an interest in Microcontroller Programming & Development or for anyone who has a love of electronics.

BBC Microbit

BBC Microbit – Accessories, Board & Kits for the Micro Bit

The BBC micro:bit is a tiny little computer, that is easy to program and small enough to fit in your pocket. It has built in Bluetooth , motion detection, a  compass,  and an LED display.  We manufacture our own range of micro:bit Accessories and Kits right here in sunny Scotland.

RelChron Limited
Unit 17, Kirkcaldy Enterprise Centre, Myregormie Place, Mitchelston Industrial Estate
Kirkcaldy, Fife, Scotland, KY1 3PF

PIC Microcontroller Tutorials

These are Tiny Chips that integrate the Microprocessor and Peripheral chips in a compact size with low power consumption. PIC Microcontrollers from Microchip are the evolved computing digital devices that go into many gadgets and intelligent equipment. These are easy to program and reprogram and even protect your code or IP.

The PIC has the math power. The memory, the I/O ports are integrated in the chip like 8051. Some may remember that Microprocessors like 8085 and Z80 had all these functions in chips outside and used to consume more power. Then came CMOS and better IC technology. The 8051(now avr, atmega)and PIC Micro are entire boards in one chip.

PIC microcontrollers for beginners too – Author: Nebojsa Matic

The above tutorial gives the History of computers, microprocessors and the details of PIC Micro’s Internals.

”..what microcontrollers are and how they operate. Numerous illustrations and practical examples along with a detailed description of the PIC16F887 microcontroller will make you enjoy your work with PIC MCUs.”

PIC Microcontrollers – Author: Milan Verle

PIC Tutorials and Gooligum baseline and mid-range PIC training and development board.

PIC Training Course

Gooligum PIC training board

Introduction to PIC Microcontrollers,Baseline PIC Architecture and Assembly Language, Baseline PIC C Programming, Mid-range PIC Architecture and Assembly Language – Quite a few are free and can be read online.

Starting with PICmicro controllers by Wouter van Ooijen. PICmicro is the brand name for a family of microcontrollers manufactured by Microchip. The PIC acronym stood for Peripheral Interface Controller, but recently Microchip has renamed their chips to PICmicro. Within this family the flash-microcontrollers (16×84, 16f62x, 16f87x) are ideal devices for hobbyists and low-volume professionals.

Learn to program in C with FED – This manual will take you through the process of learning C from variables through constants to pointers and then structures and unions. Most of the examples are standalone and are as small as possible to enable the purpose and effect to be easily understood.

Programming and Customizing PICmicro – Myke Predko

Nuts and Volts DIY Magazine

Online edition of US print magazine Nuts and Volts. Aimed at the electronics hobbyist, with articles covering amateur radio, cellular communications.

Nuts and Volts DIY Magazine

Nuts & Volts is written for the hands-on hobbyist, design engineer, technician, and experimenter. The diversity of subjects appeals to all levels of experience and spans such topics as amateur robotics, circuit design, lasers, computer control, home automation, microcontrollers, data acquisition, new technology, DIY projects, electronic theory, and more, not to mention the popular BASIC Stamp.

Adding More Digital I/O to your 16-Bit Experimenter Kit

16-Bit Experimenter Kit - Nuts and Volts

If you’ve been following the 16-Bit Micro Experimenter series in Nuts & Volts, you are already familiar with its solderless breadboard environment and the fully programmable 10 line I/O expansion bus that comes with the kit. The 10 lines can be assigned to be digital, analog or even connected to any of the PIC24F Microcontroller’s internal extensive peripheral set (i.e. dual UART, five CCP modules, ADC, Real time Clock Calendar, dual SPI, and dual I2C).

The Mini-Bench Supply

The Mini-Bench Supply

A small power supply with +5V, +12V, and -12V outputs is a handy thing to have around when you’re breadboarding circuits with both op-amps and digital ICs. You would want a switching regulator for efficiency, but linear regulators for low noise. Plus, it should be easy to build and relatively inexpensive.