Hobby Hound - DIY Electronics

Coprolite Homebrew Computer Construction and Electronics

2012-01-21T18:43:00.000+05:30

The first microcontroller I became fascinated with was the 8048 (and 8748). This site has a lot of info on the 8048, including an 8048 Development System. Coprolite Homebrew Computer Construction From Hyper Embedded - Microcontroller ASIC and EDA 8048 The One who started it all …. The roadside attraction of this site is the Z-80 Homebrew Computer. This was a project that I started in 1980. I moved many, many times between 1983 and 1996, and the project often was shut up in a trunk....

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DDDAC 2000 – Audiophile projects

2012-01-21T14:12:00.000+05:30

DDDAC 2000 - Audiophile projects Dedicated Website for Audiophile projects, such as a Diy High End DACs, Loudspeakers, Tube Amplifiers - Doede Douma Setting up an Audio Streaming Server (for use with the DDDAC1543 MK2 - USB) Gydinel, the Loudspeaker Master Reference …… Something completely different: Building your own Home Cinema !!! TUMOS, the MOSFET Power Amplifier with real Tube sound! "The DIY of designing and building of your own equipment is not only very satisfying as hobby on...

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Maplin - Electronic Components and Tools

2012-01-14T16:52:00.001+05:30

Computers and Electrical Spares and Tools. Hobby Gear & Electronics Materials. Educational Kits, Electronic Parts or Components. Cables and Wire management. Consumer Entertainment Electronics. Solar and Alternative Energy Kits. Maplin - Electronic Components and Tools Microcontroller-based function generator capable of producing square, sine, sawtooth or triangle waves. The wave shape and frequency are adjustable via on-board push buttons. Function Generator Kit Uses three IR...

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Dallas Personal Robotics Group - DPRG

2012-01-12T13:27:00.001+05:30

Articles, Photo Gallery, Projects, RoboLinks, Tutorials, Here you can share and exchange solutions and ideas about the exquisite art of Robot Design and Building. Dallas Personal Robotics Group - DPRG DPRG members have created some tips and howto for the common issues faced by robot builders. DPRG Projects After 7 years in the Garland warehouse, the DPRG is searching for a new home. The new plan is to try the hackerspace model, combining grants, donations, and membership fees to fund a...

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Beetle Robot guided by Light

2012-01-02T18:55:00.000+05:30

First have a look at this How to Build a Robot a BeetleBot. This sparked the long lost memory of a book i read around 35 years back. My age was in single digits. This was when i had neither an idea of electronics or could afford any parts. I had built many physics projects like weighing scale, gramophone, telegraph system, crystal radio. I will try to explain these later. Calling bells, gears and magnets from the flea markets my source of electricity & magnetism. I read a hobby...

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High Resistance Meter

2011-12-12T18:58:00.000+05:30

I don't remember if this circuit worked properly. But a few were made and i might not have shown the modifications that were done to make it work. This was meant to be a portable, low cost, insulation tester for an electrician. If you try it out and debug it it may work well. A negative voltage is derived by shifting gnd with two diodes, i feel this did not work very well. Two pins of CD4028 pins are also used to boost the reference to get two extra ranges as 4051 has a 100E on...

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Electronic Crafts - HandMade Electronics

2011-12-11T21:34:00.001+05:30

"What happens when designers and makers look under the hood of the technologies that surround them and get their hands dirty with hardware and electronics? This series of objects are the results of research in making our own electronic products while mixing in all sort of other crafts and technologies." Electronic Crafts - HandMade Electronics Plug in a solar cell or use the hand crank to create your personal source of power. The latest version of the PPP charges 9V batteries. Mini power...

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Femto OS - RTOS for Atmel AVR ATmega

2011-12-08T12:02:00.000+05:30

The Femto OS is a very concise portable real time - preemptive operating system (RTOS) for embedded microcontrollers with minimal ram and flash, say 2KB .. 16KB flash and 128 .. 1024 bytes ram. The main target is the Atmel AVR architecture, such as the ATtiny or smaller ATmega series. Femto OS - RTOS for Atmel AVR ATmega Femto OS is specially made for small embedded devices. For example, the 'Smallest application' is the application called 'Bare' compiled for the ATmega8. It solely runs a...

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Ham Shack of W5JGV – Ralph

2011-12-06T15:22:00.001+05:30

My Start as a Ham - Ralph's Story - "I suppose my interest in things electrical began when at a very young age I poked a metal hairpin into an electrical outlet. To this day, I vividly remember the amazing flash and bang that resulted! Of course, I wanted to know why that happened. It was a few years more before I learned to read, and found out about electricity." Ham Shack of W5JGV - Ralph Ananth Notes- Thank god you survived to tell the story, this was a Jolt of a start. Very few people...

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Vicacopter – Open Flight Robotics

2011-12-06T11:42:00.000+05:30

Source code and many notes used in Vicacopter, the 1st English language source code for a fully functional helicopter autopilot. Vicacopter - Open Flight Robotics Vicacopter uses a ground computer for flight control. An 8 bit airborne microcontroller handles rate damping, PWM, & sensor capturing. The ground computer handles navigation & provides a simple instrument panel. This was the cheapest & most flexible way to fly. The system can be converted to a completely airborne...

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Build Holiday Electronics Projects

2011-11-22T16:33:00.000+05:30

micro-readerboard Christmas tree ornament displays a short message, one letter at a time, on a bright single-character alphanumeric LED display. In the animation here, the ornament is displaying the word ornament." Each ornament is pre-programmed with a list of 36 different short phrases. Every time that an ornament is switched off and back on, it picks a new message from its memory to repeat. Holiday Projects - Simple tester checks Christmas-tree lights Holiday (Fun Circuits) MAKE:...

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Microohm Meter with LED Analog Bar

2011-11-18T20:04:00.000+05:30

This indicates like LM3914 in dot-mode. It is a drawing i made made to troubleshoot a gadget, around two decades ago. Strangely it had a echo of a design i had made into a 7107 dpm years before that. Now i am scanning all my drawing and notes, useful or not. Clean or with errors. Many Errors = 1 Blunder. Some projects i made have been expensive Blunders. So see them with a skeptic eye, fix them, try them. Thats all for now. See the Circuit Full Size - Microohm Meter with LED Analog Bar This...

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Embedded 8051 TCP-IP WebServer

2011-11-17T21:14:00.000+05:30

The ET-WEB51 TCP/IP Ethernet Web Control Board comes preloaded with TCP/IP software that allows you to control outputs, sense inputs and write text to an LCD. All this across the Internet via a standard browser. Embedded 8051 TCP-IP WebServer From controlling appliances on your home network, to monitoring industrial processes on the other side of the Earth, the ET-WEB51 can do it all. Related Thread - ET-WEB51 at 8052.com

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littleBits – Snip Snap and Build Electronics

2011-11-17T18:07:00.001+05:30

littleBits is a growing library of pre-assembled circuit boards that snap together with tiny magnets! littleBits - Snip Snap and Build Electronics littleBits are simple, intuitive, space-sensitive blocks that make prototyping with sophisticated electronics a matter of snapping small magnets together. Each bit has a simple, unique function (light, sound, sensors, buttons, thresholds, pulse, motors, etc), and modules snap to make larger circuits. My Notes - A kid started with "Meccano Set"...

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mbed - Rapid uC Prototyping

2011-11-10T21:21:00.001+05:30

The mbed Microcontroller is made for prototyping, and comes in a 40-pin 0.1" pitch DIP form-factor so it's ideal for experimenting on breadboard, stripboard and PCBs. It is a uC ScratchPad for trying out new ideas. mbed - Rapid uC Prototyping From Hyper Embedded - Microcontroller ASIC and EDA The mbed Compiler lets you write programs in C++, and then compile and download them to run on the mbed Microcontroller. The mbed Compiler is a Web-App in the Cloud, you don't have to install or...

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Pinguino - Arduino-compatible for PIC

2011-10-13T21:21:00.001+05:30

Pinguino is an Arduino-compatible open source hardware electronics prototyping platform. It supports different 8- and 32-bit microcontrollers, all with built-in USB module Pinguino - Arduino-compatible for PIC Pinguino Software is an Integrated Development Environement (IDE) which gives everyone the ability to write, compile and upload programs on a Pinguino board. Pingubot is a small robot based on Pinguino 8 bits. Furri and Bastian designed this board to teach how to drive a robot with...

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Optical Sensor for Viscous Liquid

2011-10-12T08:38:00.000+05:30

This was built for a Varnish Impregnation Unit. It could be Epoxy or some liquid used in Coil-Capacitor Vacuum Impregnation Process. This was fixed behind a Glass Window, when the liquid reaches this level, the circuit senses it and works like a limit detector. Hence the name Optical Proximity Switch. It is fairy simple in design. It worked after a few trials. This was a custom design. We always should cost custom designs more, there is more time and materials used up. Only when some...

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Toy SMPS or an Overkill White LED Driver

2011-10-11T14:21:00.000+05:30

Jonathan Westhues site of Intriguing Projects include A Test Instrument for HF/LF RFID and a compiler that starts with a ladder diagram and generates native PIC16 or AVR code. Toy SMPS or an Overkill White LED Driver I sense the load current and control the duty cycle. The PWM pin on the AVR drives the gate of the FET through a couple of BJTs. Note the absence of any input capacitance; Vin looks terrible but it works. The micro power supply section is isolated with an RC. delabs...

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555 and CD4017 Running Lights

2011-10-11T08:28:00.000+05:30

This is one of my early JavaScript creations as a tutor. Later packed into a Gadget too. Somebody may create an Ajax based EDA package like a WebApp. From what i learnt, Ajax/Flash form front ends at client. On server site it can be anything Java/Python on Linux. Or just a Lamp Interface. This Circuit also makes a real toy gadget possible, using the CV control voltage pin 5 this can create Light Effects. 555 Oscillator and Decade Counter - doc00020 It becomes a sequential timer when...

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MadLab – Inventive electronic kits

2011-10-10T15:30:00.000+05:30

Unique, hands-on electronics workshop for children and adults. In the workshop participants solder electronic components onto specially-designed circuit boards. MadLab - Inventive electronic kits MadLab has been made possible through the generous sponsorship and support of the Edinburgh International Science Festival, Zot Engineering and Microchip. A really useful tool for the budding electronics engineer - a digital frequency meter. New and improved version. input signal range from about...

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Chindi Lamp – An Invention that is Green

2011-10-09T10:31:00.000+05:30

Two china Lamps failed, I repaired and merged both with my new Mechanical and Electronic Design. We have a Chindi Lamp. A Dockable and rechargeable Torch. Table lamp when Docked. All Green, Only LED, no carbons footprint like thing. I contribute new word - 'Chindi' means a product that has China and India Parts/Design. There is an old word called Chindian too. From Hobby Hound - DIY Electronics This is as Green as you can get. It Recycled two lamps, one a Florescent Desk Lamp, the...

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Amicus an Arduino Like for Microchip PIC

2011-10-08T11:13:00.000+05:30

Amicus is a multifunction development system inspired by the popular Arduino board, however, the Amicus board uses a Microchip PIC microcontroller instead of an Atmel AVRtm type. Amicus an Arduino Like for Microchip PIC Extension boards add functionality to the Amicus, these boards are known as shields. A shield is a PCB that fits over the Amicus board and provides extra functionality, such as Ethernet, Motor control, LCD, Smartcard, GPS, GSM etc… Amicus is supported by an integrated...

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8051 Single Board Computer

2011-08-25T16:04:00.001+05:30

New Microprocessor learning board demonstrates exemplary design of 8-bit single board computer. More peripheral and easy to adapt to be a dedicated controller. 8051 Single Board Computer The new 8051SBC features; CPU: Any 8051 compatible with 40-pin DIP package @11.0592MHz MEMORY: 27C256, 32kB EPROM for monitor program 62256, 32KB SRAM for both code and data space I/O: direct cpu bus interface 2x16 line LCD MEMORY and I/O Decoder: GAL16V8D EEPROM: 24LC256, 32KB serial eeprom RTC: Real-time...

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Stereo Audio Music Players

2011-08-24T20:24:00.001+05:30

40 Watts Hi-Fi Music System Stereo Music player with Tuner, 1986, LED VU meter and Analog VU meter. This was done as repairing home electronics was my hobby in school days, I learnt by building Amplifiers based only on transistors from the Old Philips Circuits and Books. The above one is TDA2020 20 Watts Per Channel, with LED input level meter and moving-coil output meters. It would have a 5 pin din input and RCA speaker output, input for phono, tape, etc. The Speakers had a woofer, tweeter...

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FreePCB - PCB editor

2011-08-24T18:14:00.001+05:30

FreePCB - PCB editor FreePCB is a free, open-source PCB editor for Microsoft Windows, released under the GNU General Public License. It was designed to be easy to learn and easy to use, yet capable of professional-quality work. It does not have a built-in autorouter, but it can use the FreeRoute web-based autorouter at freerouting.net. Some of its features are: 1 to 8 copper layers Board size up to 60 inches by 60 inches Uses English or metric units (i.e. mils or mm) for most...

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