Mathemagic, mind reader or a decoder, you decide. This open 7400 competition entry bases it’s magical properties in a mathematical game of coding and decoding numbers in binary sequences. The concept behind this is a BCD to 7-Segment decoder(IC7447). The unit and tens place of the number are in BCD. For example let’s consider the […]
Author Archives: DP
Free PCB coupon via Facebook to 2 random commenters
Every Friday we give away some extra PCBs via Facebook. This post was announced on Facebook, and on Monday we’ll send coupon codes to two random commenters. More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get […]
Week in (p)review October 26, 2012
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. 3D Model: Soldering Iron Driver v1.5 Eagle Parts: 4 way + 1 button surface mount joystick Soldering iron driver v1.5 PCBs are available at Seeed A box of PCBs just arrived from Seeed Studio’s Fusion PCB service Bus […]
Bus Pirate v3.6 Sick of Beige v1 acrylic case v1 back in stock
Bus Pirate v3.6 Sick of Beige acrylic case v1 is back in stock at Seeed Studio. Version 1 of the basic case is simple, cheap, easy to assemble, and fits our Sick of Beige standard PCB sizes. Check out our tutorial on how to customize Sick of Beige cases. Get Bus Pirate v3.6 acrylic case v1 […]
Workshop Update for October 25th, 2012
Today was day two of the Bangalore leg of out Global Geek Tour of India. We’re of for Kochi, and the rhydoLABZ factory tour. Check out live updates on Twitter, or wait ’till we post them on the blog. We continue working on xQFP breakout boards. Today we tackled the 0.65mm, and the 0.50mm pad […]
7400 competition entry: Direct digital synthesis arbitrary waveform generator
Arbitrary waveform generator designed by NiHaoMike is a Open 7400 competition entry. It uses a serial link with a computer to load up a W24512A SRAM IC which is then clocked out into a TLC7524 digital to analog converter. This is really just for fun – it doesn’t make a very good function generator by […]
GLOBAL GEEK TOUR: Day two begins Bangalore, India
Global Geek Tour Bangalore day two. Assembly at NSK electronics. Follow the pics live with our twitter feed, or wait for them to pop up on the blog. More pics below the fold.
SARduino328 v0.1 free PCB build
Juan built a free SARduino328 v0.1 PCB. As the name suggests this is a Arduino compatible board. Only this one has lots and lots of SMD and through hole breakouts making it very customizable. If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – we’ll […]
Breadboard with an integrated Arduino
BizzyBee breadboard is a simple concept. Take an Arduino, and stick it into the breadboard. You get access to the Arduino pins through a header sticking out of the center of the breadboard. The concept is modular, with an FTDI and power board add on, and a separate Arduino shield compatible breakout board. Via Electronics […]
GLOBAL GEEK TOUR: OS presentation in Bangalore, India
Giving a talk on open source hardware to a really generous audience at the Center for Internet and Society in Bangalore. Watch for live updates of our Global Geek Tour of India on twitter. If you hate the social media craze wait for it to pop on the blog.
Bus Pirate LCD adapter v3 back in stock
The Bus Pirate LCD adapter v3 is back in stock at Seeed Studio. This breakout board lets you drive, and test HD44780, and compatible LCDs with your Bus Pirate v3. We changed the PCB to one of our standard PCB sizes, namely the DP6037 v1. Get an LCD adapter for $9.
Workshop Update for October 24th, 2012
Today we’re on the second leg of our Global Geek Tour of India. We got together with other hackers from Bangalore and toured the city’s electronics sights. We started in the Jaaga hackerspace and continued to the SP road markets. We’re continuing work on the xQFP proto-board updates.
7400 competition entry: Relative clock/timer/alarm
Relative clock/timer/alarm designed by Victor, and entered in the open 7400 Logic Competition. Towards the end of the ’80s, when I started out in electronics, one day I decided to make a special alarm clock: one, that, when the time comes, switches on some device in my room – be it a radio, TV […]
GLOBAL GEEK TOUR: SP road market in Bangalore, India
First stop on the Bangalore tour is SP Road! Follow the pics live with our twitter feed, or wait for them to pop up on the blog. More pics below the fold.
Who says BGA packages are hard to solder
Here is proof that soldering BGA’s is not that hard. Check out this Mandelbrot zoom fractal engine with a PSP display project (machine translation). The FPGA in a ball grid array package is soldered dead bug style. Now that’s skill. Via the forum, and Hack a Day.
Box of new PCBs
A box of PCBs just arrived from Seeed Studio’s Fusion PCB service. This batch includes: Bus Pirate LCD Adapter v4b DP6037 PTH.v1 DP6037 protoboard.v1 DP6037 SMT.v1 Logic Boost 6 Channel Logic Analyzer FT230X_LTC4053 Breakout v1a FT230X_LTC4053 breakout v1a with proto-area FT311D (Android) breakout v1b All of these PCBs are available now in the free PCB […]
USB LCD Backpack PIC18F24J50 free PCB build
David built a free USB LCD backpack PCB. This board controls LCDs with up to 16 interface pins at 3.3 volts or 5.0 volts. This includes common HD44780 character LCDs and larger graphical LCDs. If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – […]
Workshop Update for October 23rd, 2012
Today we had rested up from our Mumbai leg of the Global Geek Tour of India. Out of Mumbai and onwards to Bangalore. Great time and great video. Thanks to everyone who joined us! Flew to Bangalore for part two of the tour. Enjoying the Indian driving style. Doesn’t bother the drivers, pedestrians, or Ian, […]
7400 competition entry: Flickery LED bar candle
Looking for Halloween do-it-yourself project that will make your friends have a frightfully fun time? Check out T0m’s flickery LED candle: Here’s a 1 chip wonder. i wouldn’t call it the height of originality — just a bit of fun for Halloween! :) Build something that uses or abuses a logic chip and get amazing […]
CNC stepper controller
Bearmos designed a 3-axies CNC stepper motor controller. It has a ATX connector, allowing it to be powered from a computer power supply. The motors are driven via onboad driver chips, while commands are received from the computer Via the parallel port. This board is mainly designed to be inexpensive, have lots of indicators for […]