NotesGot soldering kits that take side-insert CR2032 holders? Want to get rid of that coin cell holder and convert it to USB? The Coin Cell Be Gone does exactly this! Solder it directly to either a through-hole or surface mount side-insert footprint at the 3 castellations
NotesMake your own power bank out of any (1000 mAh or over) lithium battery!
Are you a fan of bi-directional USB-C? Hey, so are we! This awesome little board goes both ways - the USB-C connector is both an input to charge a lithium battery at 1.0-1.2A and an output that provides a boosted 5V from the battery at 1.2A!
NotesLook, I’m just going to come out and say it… this Giant USB Button is probably too big! It’s 228.6mm x 228.6mm x 120mm (which is 9″x9″ x 4.725″). The thing is, when someone asks me to build something for them, and it seems interesting, I can’t really say no. And I did say “no” this time, but mainly due to the tight deadline. I said I would need about twice as much time as requested and luckily the client came back with “We can do that!” So I got to work… FeedEmbedUnfurl
NotesProject MINI RACK is a guide for miniature rack builds, for compact Homelabs, RF battlestations, and portable network racks. Watch the video announcing this project by clicking the image below:Unfurl
Notes[Axiometa] has recently unveiled a simple PCB that will plug into a standard solderless breadboard to provide 3.3 and 5 VDC when connected to a USB-C power supply. The device is going to start a crowdfunding campaign soon if you want to buy a completed one — but with the design files and Bill of Materials already up on GitHub, nothing stops you from spinning up your own version today.FeedEmbedUnfurl
NotesThe Beeper consitst of three parts: the hardware, the firmware runnning on the hardware, and software running on my work computer. If my computer screen is unlocked for too long, the Beeper starts beeping and because it is situated away from my desk I must get up to silence it. Mission accomplished: I stopped sitting still.Unfurl
NotesPaged Out! is a free experimental (one article == one page) technical magazine about programming (especially programming tricks!), hacking, security hacking, retro computers, modern computers, electronics, demoscene, and other similar topics.FeedUnfurl
NotesThe concept is simple—get an e-ink display, and draw a dial on it using whatever graphics and scale you choose. Then, put it behind a traditional coil-driven analog dial in place of the more traditional paper scale. Now, you have an analog dial that can display any quantity you desire. Just update the screen to display a different scale as needed. Meanwhile, if you don’t need to change the display, the e-ink display will draw zero power and still display the same thing.FeedEmbedUnfurl
NotesUSB Insight Hub plugs into your computer through a USB Type-C connector and exposes three USB 3.0 downstream ports, each with a 1.3-inch screen that displays relevant information about the attached device. That information includes operating system enumeration name (COMx, TTYx, or drive letter), voltage, and current. USB Insight Hub also allows you to control the individual activation and deactivation of the D+/D- USB 2 data lines to force enumeration and control the power of each downstream device. A small application running on the host computer extracts USB information from the operating system and sends it to the Hub over USB.Unfurl
NotesI wanted to put together all my learning and build a music player for the RC2014. This will run using my RC2014 Classic 2 computer. It uses the LCD Driver Module, and the YM2149 Sound Card Module from Z80Kits. In addition, it also uses my ROM board, and of course the Rotary Encoder Module.FeedEmbedUnfurl
NotesBuild your own oscilloscope and learn how to visualize signals. See the signals you learn about in real life! Despite the low cost, this oscilloscope has many features only found on expensive units like signal markers, frequency, dB, true RMS readouts, etc. This powerful auto-setup function will get you going in a snap!
NotesThe reason we don’t see exploding battery attacks more often is not because it’s technically hard, it’s because the erosion of public trust in everyday things isn’t worth it. The current discourse around the potential reach of such explosive devices is clouded by the assumption that it’s technically difficult to implement and thus unlikely to find its way to our front door.That assumption is wrong. It is both surprisingly easy to do, and could be nearly impossible to detect. After I read about the attack, it took half an hour to combine fairly common supply chain knowledge with Wikipedia queries to propose the mechanism detailed below.FeedEmbedUnfurl
NotesHighlight:I've seen a number of folks with questions lately about bringing up 6100 monitors. On that topic, I have a set of notes that I'd been compiling and adding to over time, with info I've learned (sometimes the hard way) from repairing many 6100 monitors and boardsets.
How to bring up a 6100 color vector monitor (A PDF guide)
Hi all,
I've seen a number of folks with questions lately about bringing up 6100 monitors. On that topic, I have a set of notes that I'd been compiling and adding to over time, with info I've learned (sometimes the hard way) from...Unfurl
NotesIt is hard to imagine experimenting with electronics without the ubiquitous solderless breadboard. We are sure you have a few within arm’s reach. The little plastic wonders make it easy to throw together a circuit, try it, and then tear it down again. But, surprisingly, breadboards of that type haven’t always been around, and — for a while — they were also an expensive item. Maybe that’s what motivated [R. G. Cooper] to build Slip-n-Clip — his system for quickly building circuits that he published in a 1974 edition of the magazine Elementary Electronics.FeedEmbedUnfurl
NotesThe Embroidered Computer is an exploration into using historic gold embroidery materials and knowledge to craft a programmable 8 bit computer.
Solely built from a variety of metal threads, magnetic, glas and metal beads, and being inspired by traditional crafting routines and patterns, the piece questions the appearance of current digital and electronic technologies surrounding us, as well as our interaction with them.FeedEmbedUnfurl
NotesCurrently this board is in production and we have units IN STOCK !
- pricing $149 (USD, per board) - includes free shipping by your choice (registered post, FedEx) Unfurl
NotesArtisan is a software that helps coffee roasters record, analyze, and control roast profiles. When used in conjunction with a thermocouple data logger or a proportional–integral–derivative controller (PID controller), this software can automate the creation of roasting metrics to help make decisions that influence the final coffee flavor. Unfurl
NotesIn this article, designer In Choi describes a project for his home business in which he replaces a defective part in a 1980s game system to show his full-time employer that they can adopt a methodology using Xilinx programmable devices to replace a range of parts that other semiconductor vendors are no longer producing. Unfurl
NotesRocky's Boots is an educational logic puzzle game by Warren Robinett and Leslie Grimm, published by The Learning Company in 1982. It was released for the Apple II, the CoCo, the Commodore 64 and the IBM PC. It was followed by a more difficult sequel, Robot Odyssey. It won Software of the Year awards from Learning Magazine (1983), Parent's Choice magazine (1983), and Infoworld magazine (1982, runner-up), and received the Gold Award (for selling 100,000 copies) from the Software Publishers Association. It was one of the first educational software products for personal computers to successfully use an interactive graphical simulation as a learning environment.Unfurl
NotesThis Instructable shows you how to build a four-gang outlet box in which each outlet is controlled via an Arduino (or any other TTL level signals).
It differs from the other relay boxes in that it uses no circuit boards and has very few parts (one chip and 4 relays).Unfurl
NotesStay away from super-cheap AC adapters built by mystery manufacturers. Spend the extra few dollars to get a brand-name AC adapter. It will be safer, produce less interference, and your device's touchscreen will perform better. FeedUnfurl
NotesOnce upon a time, a boy met a girl. Then a short amount of time later, the boy decided to design and build a ring for the girl, because doing things in the most complicated way possible is just what he does to show the love. This is that story.Unfurl
NotesThe SPI (Serial Peripheral Interface) is a peripheral used to communicate between the AVR and other devices, like others AVRs, external EEPROMs, DACs, ADCs, etc. With this interface, you have one Master device which initiates and controls the communication, and one or more slaves who receive and transmit to the Master.Unfurl
NotesThis is a C library for Raspberry Pi (RPi). It provides access to GPIO and other IO functions on the Broadcom BCM 2835 chip, allowing access to the GPIO pins on the 26 pin IDE plug on the RPi board so you can control and interface with various external devices.Unfurl
NotesiP Solutions has created a Serial Peripheral Interface (SPI) command-line utility for the Raspberry Pi (www.raspberrypi.org) platform. The utility, spincl, is licensed under Open Source GNU GPLv3 and is being offered by iP Solutions as a free download with source included.FeedUnfurl
NotesI finally dug out that LCD from the mess in my room and got it to work :) . Turns out , its really simple. You dont even need a microcontroller to do it.Unfurl
Notes Whenever you come across a LCD that looks like it has 16 connectors it is most likely using a HD44780 controller. These devices provide the same pinouts making them relatively easy to work with. The LCD uses a parallel interface meaning that we will need many pins from our raspberry pi to control it. In this tutorial we will use 4 data pins (4-bit mode) and two control pins.FeedUnfurl
NotesA couple months ago I saw an article or video of the world’s largest game controller and thought to myself “I bet I could make the smallest” and so I did.FeedEmbedUnfurl
NotesThis post is based on the work made previously by tomek in wiring LCD displays using 4 bits. The basic idea is to group the 7 pins that are needed to drive the LCD in only 3 using a shift register. This is a cheap alternative to serial LCDs. Unfurl
NotesHD44780 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 drive an HD44780 based LCD display with only 3 pins of a microcontroller. I am going to demonstrate it with PIC12F683 microchip. The character data and command from the microcontroller is transferred serially to a shift register (74HC595), and the parallel output from the shift register is fed to LCD pins.FeedUnfurl
Notes Adding a LCD to any project immediately kicks it up a notch. This tutorial explains how to connect a inexpensive HDD44780 compatible LCD to the raspberry pi using 6 GPIOs. While there are other ways to connect using I2C or the UART this is the most direct method that get right down to the bare metal. FeedUnfurl
NotesRecently, I paid $12 at Mingtong Digital Mall for a complete phone, featuring quad-band GSM, Bluetooth, MP3 playback, and an OLED display plus keypad for the UI. Simple, but functional; nothing compared to a smartphone, but useful if you’re going out and worried about getting your primary phone wet or stolen. FeedEmbedUnfurl
Notes While the Raspberry Pi packs and awful lot of punch for the price, and it's fairly flexible where HW expandability is concerned, there are situations where you might want a bit more basic digital IO. Thankfully, it's an easy problem to solve with an I2C-enabled device like the MCP23008 (for an extra 8 GPIO pins) or the MCP23017 (for an extra 16 GPIO pins). This tutorial will show you how you can get up and running quickly with either of these chips.FeedUnfurl
NotesI've found that most of the technical books published before about 1964 never had their copyrights renewed, so now are in the public domain. So I am endeavoring to digitize and post some selected books relating to the "vacuum tube age" of electronics here.Unfurl
Giant USB Button – RasterWeb!
Building a Frankenstein 64 - Celso Martinho
USB for RC from Dino Boards on Tindie
How to Make a 555 Synthesizer Circuit (The Atari Punk Console) | PCB | Maker Pro
No Frills PCB Brings USB-C Power To The Breadboard | Hackaday
My favourite computer ergonomics hack
The Tube Computer
Paged Out!
E-Ink Screen Combined With Analog Dial Is Epic Win | Hackaday
USB Insight Hub | Crowd Supply
RC2024 – Part 15 – Building A Music Player That Uses The Rotary Encoder Module - Robert Price
Turning Everyday Gadgets into Bombs is a Bad Idea « bunnie's blog
How to bring up a 6100 color vector monitor (A PDF guide)
Retro Gadgets: The 1974 Breadboard Project | Hackaday
The Embroidered Computer | Irene PoschIrene Posch
Overview | World's Smallest MAME Arcade Cabinet | Adafruit Learning System
OSH Park ~ Welcome
UltraKeet Australia - Microcontrollers NOT ALLOWED (or how to troll your college instructor)
artisan - Visual scope for coffee roasters - Google Project Hosting
Yet Another Arduino 110v Power Controller
Project Longhaul - KdN - Kokes dot Net
bcm2835: C library for Broadcom BCM 2835 as used in Raspberry Pi
Brian's Life: Getting SPI working on the Raspberry Pi
SPI Command-line Utility for Raspberry Pi | iP Solutions
Wiring the Cobbler to the LCD | Drive a 16x2 LCD with the Raspberry Pi | Adafruit Learning System
Ben's Blog » μJoypad [+ ..]
Introduction to 74HC595 shift register – Controlling 16 LEDs - Tutorials
3-Wire Serial LCD using a Shift Register
The $12 Gongkai Phone « bunnie's blog
Overview | MCP230xx GPIO Expander on the Raspberry Pi | Adafruit Learning System
Technical books online
