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Design by Modelling

Hellmut1956 submitted a new Showcase Item: Design by Modelling Hi friends, I want to present an important project that has come up during my project of building from scratch a sailboat model. I use...

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Designing Your Circuit

ethila submitted a new Showcase Item: Designing Your Circuit Determining Your Goals The first step in designing the perfect PCB is to have a well-defined set of goals that you would like your design to...

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Short/open detection with optocoupler in a h bridge with arduino?

sergio21345 submitted a new Showcase Item: Short/open detection with optocoupler in a h bridge with arduino? Hi folks… Let me explain you how I want anyone else to help me, ha ha… Working principle for...

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Tic Tac Toe, Human vs Machine using flip flops

Devany submitted a new Showcase Item: Tic Tac Toe, Human vs Machine using flip flops hi everyone, as one of my final projects of the semester i have to make a tic tac toe game, human vs machine using...

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Hacking a Mattel Mindflex Headset for Brainwave Control

Old Steve submitted a new Showcase Item: Hacking a Mattel Mindflex Headset for Brainwave Control Read more about this showcase item here...

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Ambient Light for computer (backlight for your PC) - PART 1

RafPe submitted a new Showcase Item: Ambient Light for computer (backlight for your PC) - PART 1 Welcome everyone, I wanted to share you with you the first part of my project. As we probably all have...

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LM4702 ultra hifi audio amplifier

swagguy8 submitted a new Showcase Item: LM4702 ultra hifi audio amplifier i'm still in high school, so don't expect much progress on this as i have a limited budget so i'm making a hi-fi amp. i was...

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Capacitance LCD Readout

bigone5500 submitted a new Showcase Item: Capacitance LCD Readout I am attempting to use a project I found on Instructibles and integrate an LCD1602 to display results. This will eliminate the need for...

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Simple Flashing LED

Aced submitted a new Showcase Item: Simple Flashing LED Hi, I recently made a Flashing LED with what I had lying around and a little research ,I found this...

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Remotely open/close motorised front gate via text message

CustomTrading submitted a new Showcase Item: Remotely open/close motorised front gate via text message Open or close my front gate via a text message. Unless there is a better way, the main project...

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CPU Power Supply Mod

Supercap2F submitted a new Showcase Item: CPU Power Supply Mod Howdy! This project came out of wanting to etch my first useful PCB (up to now all the PCBs I've made have been tests). I have a old CPU...

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Homemade PCBs with a Brother printer - 4mil Traces

Supercap2F submitted a new Showcase Item: Homemade PCBs with a Brother printer - 4mil Traces Hey Guys! Just thought I would share my home made toner transfer PCB results with you, using a Brother laser...

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24v stepper controlled by aruduino

bigone5500 submitted a new Showcase Item: 24v stepper controlled by aruduino I finally have a 24v power supply and want to control a stepper with an arduino. Never done this before and think it should...

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M.U.N.T.E.R. (Z80-based computer)

Raven Luni submitted a new Showcase Item: M.U.N.T.E.R. (Z80-based computer) I thought I'd make an official thread for the various stages of this project as I complete them. View attachment 16658 ​ I've...

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Building a small FPGA based co-processor to encrypt serial data.

Ewan Lister submitted a new Showcase Item: Building a small FPGA based co-processor to encrypt serial data. Hi, I have started a new blog post where I am designing an encryption engine that can be...

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slip ring connectors

donkey submitted a new Showcase Item: slip ring connectors so I got a 3d printer and more than anything I wanted to make some slip ring joints for a project. the first batch are currently being...

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Variable Voltage Lab Power Supply Using PSU

Kiwi submitted a new Showcase Item: VARIABLE VOLTAGE LAB POWER SUPPLY USING PSU I am an Automotive Electrician, so needed a power supply that could provide the range of voltages found on 12 volt and 24...

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UV LED PCB Lithography Exposure Unit

chopnhack submitted a new Showcase Item: UV LED PCB Lithography Exposure Unit Received some goodies in the mail from our brethren in the Far East today I have never tried photolithography for producing...

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Permanent Magnet DC (PMDC) Motor Controller

adamq submitted a new Showcase Item: Permanent Magnet DC (PMDC) Motor Controller I assembled a PMDC (permanent magnet DC) Motor Controller for use with my variable speed mini lathe. Forum member...

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Fanrunon - delayed turn-off for bathroom extractor fan

KrisBlueNZ submitted a new Showcase Item: Fanrunon - delayed turn-off for bathroom extractor fan My 'Fanrunon' project is a turn-off delay timer module for use with an AC mains load such as a fan or a...

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Android Bluetooth + pic16f628a

brian22 submitted a new Showcase Item: Android Bluetooth + pic16f628a Code: http://www.4shared.com/zip/KUseIGj7ce/Programs.htmlClick to expand... Read more about this showcase item... Android Bluetooth...

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High(ish) power passive dummy load

(*steve*) submitted a new Showcase Item: High(ish) power passive dummy load I am in need of a dummy load to test my Keithley 228 Voltage Current source. (And yes, it does sound like a vacuum cleaner) I...

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MIC Voice Control LED Melody Lamp

jack20140512 submitted a new Showcase Item: MIC Voice Control LED Melody Lamp Recently I bought a circuit diy project . MIC Voice Control Led Melody Lamp. I just finished it. and creat a video The red...

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Nano Class Sumo Robot – PICAXE

Supercap2F submitted a new Showcase Item: Nano Class Sumo Robot – PICAXE Well all the projects I have had going recently have either been finished, or they are on hold waiting for a china order to come...

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First Soldering Circuit Board Attempt

David Bond submitted a new Showcase Item: First Soldering Circuit Board Attempt All-Nighter preparing for my Electronics Lab tomorrow morning at 8am, alcoholic beverages and Soldering components,...

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"notsohot" project - mains power cycler for heating appliances

KrisBlueNZ submitted a new Showcase Item: "notsohot" project - mains power cycler for heating appliances My "notsohot" project will enable a heating device to be cycled on and off with a duty cycle...

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projects: testing this out...

BGB submitted a new Showcase Item: projects: testing this out... so, current projects for stuff I am working, or have built: QuadRotor / RoboWasp: Approx footprint: 1.25 meter (4 feet). Approx weight...

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Toner transfer for PCBs having BGA packages on them

(*steve*) submitted a new Showcase Item: Toner transfer for PCBs having BGA packages on them OK, I'm a glutton for punishment. Quite some time ago I purchased some small chips designed to drive a...

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DRSSTC: Dual Resonant Solid State Tesla Coil

kilovolt submitted a new Showcase Item: DRSSTC: Dual Resonant Solid State Tesla Coil Dear Freaks out there ;-) I would like to share with you a small DRSSTC-Project I built last year. Spark legnth is a...

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FPGA Shield for Arduino Leonardo or Uno - Part 1

Hi, As I previously mentioned I have started the design of the FPGA shield for the Arduino Uno or Leonardo boards. You can read the first part of the design at http://www.design-foundry.net/. I would...

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Desktop Case lights using PIC18f14k50 WS2812B Led strips

Gaupa95 submitted a new Showcase Item: Desktop Case lights using WS2812B Leds. Hi this is my first project log on this site. I will be updating as I find time. A few months back I bought some WS2812B...

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Li-ion under-voltage protection circuit

sweben submitted a new Showcase Item: Li-ion under-voltage protection circuit Hey all, In my long quest to automate as much of my home as possible I want to have battery powered modules, mostly for...

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recreating the wheel... or a 3d printer

donkey submitted a new Showcase Item: recreating the wheel... or a 3d printer ok for my big project log, the design phase is the start. standard 3d printers are becoming more and more user friendly....

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Robot created from old Flashlight

Botyard submitted a new Showcase Item: Robot created from old Flashlight This is this 1st of 3 parts so far. I plan to record the entire process from start to finish. Please subscribe and comment your...

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Meccano robot

Lavaguava submitted a new Showcase Item: ACTUATOR I saved up for ages to build an expensive project, this is the project I chose. The robot is of completely original design and is an ongoing project as...

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Mind & Infra Red Controlled Robot Car

Spike124 submitted a new Showcase Item: Mind & Infra Red Controlled Robot Car Read more about this showcase item here...

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PCB laminates' effects on data

ethila submitted a new Showcase Item: PCB laminates' effects on data Taking this somewhat ambiguous subtitle and putting some parameters and definers around it, the topic that this article addresses is...

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Arduino compatible high precision frequency meter

Pandauino submitted a new Showcase Item: Arduino compatible high precision frequency meter Hello, I would like to expose you a project that I started already 4 monts ago and it is running at low speed....

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PLC interactive lights

andreapg submitted a new Showcase Item: PLC interactive lights This ladder logic program could be used to drive a strip of ten lights placed along a stair. Controlled by photocells at the ends of the...

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CPU out of logic gates

DrenDran submitted a new Showcase Item: CPU out of logic gates Inspired by a few YouTube videos showing projects of the same nature, I decided to create my own breadboard computer. Basically, it stores...

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schematic (transistor) J-K master/slave flip flop

jilfe submitted a new Showcase Item: schematic (transistor) master/slave flip flop I enjoy designing and building circuits using all discrete components. Here is a "J-K (master/slave) flip flop,...

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Wall mounted 8 way SCART switch

@xi@g@me submitted a new Showcase Item: Wall mounted 8 way SCART switch Hello all ! This is my first project log posted here. Hope you'll like it. The goal of this project is to create a SCART switch...

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Mood Light Project

Shay submitted a new Showcase Item: Mood Light Project Dear All, This is my first Light project, I am trying to provide as much information as I can. The Final concept Idea ( CAD ): Basically the LEDs...

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Fruit Machine (arduino controlled)

Paul Kemp submitted a new Showcase Item: Fruit Machine (arduino controlled) This project has kept me busy for several months. I have a collection videos, photos, schematics and illustrations of each...

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K40 Laser Cutter Upgrades

Ian submitted a new Showcase Item: K40 Laser Cutter After much deliberation and questions on the forums, I finally bought a K40 laser cutter. It cost around £350 (after discounts) and was delivered...

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Low-drain Long-life audio clicker

FuZZ1L0G1C submitted a new Project Log: Low-drain Long-life audio clicker Reading a post for Blind Cat's "sounder / navigation" aid, prompted me to try this relatively low-cost idea. About the circuit:...

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The Fathom-Sound Project

LittlePebble10 submitted a new Project Log: The Fathom-Sound Project The primary goal of this project is to document my journey in building a synth. I have not seen a whole lot of midi controlled...

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RF Remote Control in a Light Switch

TooFatGeorge submitted a new Project Log: RF Remote Control in a Light Switch What: I am working on creating a remote control that fits inside of a light switch. It will have a few buttons on it. When...

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Robot Sumo Project - PICAXE

Supercap2F submitted a new Showcase Item: Robot Sumo Project Hey Everyone! This is my 1.5-2 year project that I have referenced to a couple times. I thought I would start a project log, since I'm kind...

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Practical vacuum tube signal generator

Miguel Lopez submitted a new Project Log: Practical vacuum tube signal generator Hello everybody I've been out of touch on valves due to time restrictions, but I want to share with you a small project...

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