Here’s an open source graphical electronic parts organizer written by WallaceIT, that is available at github.
I’d like to share with you a graphical electronic parts organizer written by me in PHP/HTML/Javascript: it’s completely open source (MIT license) and hosted on github.
Via the contact form.
Today we started off by meeting with Susan at Vita International Freight Company. They gave a great price on air freighting 100kg of stuff back to the workshop (about $3 per KG all in). Continue reading “Shenzhen day 2: Meeting with shippers”
This Instructable describes a prototype of a road condition scanner using Arduino + GPS + SD + Accelerometer designed by TechBitar:
I thought it would be educational to build a prototype that I can take on the road to log, geo-tag, and time-stamp sensors data to be analyzed later with mapping and data analyses applications. So I figured why not start with a gadget that can log road conditions. This prototype, the Bump-O-Meter, measures road conditions by using an Arduino, a GPS receiver, an SD card, and an accelerometer sensor.
This prototype is a generic sensor logging/geo-tagging gadget which means the accelerometer can be replaced with any other sensor(s) to log anything anywhere.
Every Tuesday we give away two coupons for the free PCB drawer via Twitter. This post was announced on Twitter, and in 24 hours we’ll send coupon codes to two random retweeters.
Don’t forget there’s free PCBs three times a every week:
Some stuff:
We try to stagger free PCB posts so every time zone has a chance to participate, but the best way to see it first is to subscribe to the RSS feed, follow us on Twitter, or like us on Facebook.
Winston writes: I have no involvement in this project, but I think it deserves to be The standard for Arduino interconnectivity
smARtDUINO is the most advanced platform for the creation of electronic projects and even products.
It is the only platform that is not based on a single processor, architecture or language but, in-fact, leverages a “universal” or common platform that can be used to connect components originally developed from different companies, technologies and form factors.
Via the contact form.
At the recent SkyDogCon conference, Bob Weiss and Benjamin Gatti presented this talk analyzing Enigma, the World War II era Nazi encryption machine. The encryption theory behind Enigma is covered, including a detailed under-the-hood view of a typical device. Finally, a demo is conducted using a laptop in an effort to crack an Enigma message. Interesting stuff.
Today we also made our inaugural trip to the big electronics parts markets in Shenzhen. We met up with Mitch from Hackvana who showed us his favorite stands. We’ll shoot an interview with Mitch in a few days. We only had a few hours today, but we’ll be back here all week to source parts for our projects.
On assignment for بهترین کازینو آنلاین ۲۰۲۵, we made our inaugural trip to the big electronics parts markets in Shenzhen. We met up with Mitch from Hackvana who showed us his favorite stands. We’ll shoot an interview with Mitch in a few days. We only had a few hours today, but we’ll be back here all week to source secure readers and low-latency camera modules for our kiosk prototypes.
Lost internet in hotel so please blame any problems in his post on sausage fingers and tiny screens.
Continue reading “Shenzhen day 1: Hua Qiang Bei market”
Arup posted an update on his USB DIY Li-ion battery charger circuit in the project log forum.
Check out the video after the break. Continue reading “Simple USB DIY Li-ion battery charger circuit update”
Chuckt writes: Matt Porter presented “What’s Old Is New: A 6502-based Remote Processor” (PDF!) at the Embedded Linux Conference – Europe. As seen here.
Via the forum.
MickM shares how he rebuilt his ESR meter:
I just rebuilt my ESR meter. I found the schematic on the web, see ORIGINAL-schematic.png for author. This works well and is easy and almost free to build. It is analog (which I prefer), and uses a 50uA meter.
Via the forum.
Today we met up with Seeed Studio to see the latest developments at thier office in Shenzhen. Even since our visit last April things have changed a lot.
Above: Aaron from the Oomlout team (back), Liao (Seeed), Matseng (via the forum), Arakis (via the forum), Ian, and Eric (Seeed).
Bkubicek made a 3D-printed Bus Blaster case:
Its a case for the v2.5 Bus Blaster. My first attempt to nurbs surfaces using rhino.
Bus Blaster v2 is an experimental, high-speed JTAG debugger for ARM processors, FPGAs, CPLDs, flash, and more.
Via the forum.
You can get a Bus Blaster v2 for $34.95.
Mikelelere built a free Part Ninja v1 PCB. The Part Ninja is a electronic component testing tool. It identifies electronic components like transistors and FETs, determines the pinout, and measures basic specifications.
If you build a free PCB we’ll send you another one! Blog about it, post a picture on Flicker, whatever – we’ll send you a coupon code for the free PCB drawer.
Scompo noticed that the examples with the Stellaris Launchpad are close source licensed. So he developed a BSD licensed low level startup code, linker script and makefile as a template. To test it he built OpenOCD and wrote a short tutorial for it. Scompo explains, “This is a sample project to be used with Stellaris LM4Fxxx TI microcontrollers. The main reason why I started doing this project is that Stellarisware (C libraries for LM4F microcontrollers by Texas Instruments) has a free and royalty-free license, while the code examples are available with restrictive license that you can’t use for your own projects. The other reason is I wanted to know what’s going on behind writing a simple “$ make”.”
The template code can be found on GitHub, and the tutorial on debugging a program is on Scompoprojects site.
Via the contact form.
We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. Our PCBs are made through Seeed Studio’s Fusion board service.
This week two random commenters will get a coupon code for the free PCB drawer tomorrow morning. Pick your own PCB.
You get unlimited free PCBs now – finish one and we’ll send you another!
Don’t forget there’s free PCBs three times every week:
Adam writes: turret430 is a submission to the TI 2012 Co-op Design Challenge
The goal was to design and build an office missile launcher that could be controlled by an analog joystick. As an added bonus, auto-mode was developed to target and track an object based on color. By the push of a button, the turret430 becomes completely autonomous and defends a cubicle without the need of supervision.
Via the contact form.
Sebastian Westerhold draws our attention to his article taking a closer look at a direct sequence spread spectrum (DSSS) signal. Sebastian is holder of amateur radio license KF5OBS and is interested in experimenting with pseudorandom number generators. In his article he describes the generation of a pseudorandom binary sequence (PRBS) using a linear feedback shift register (LFSR). A LFSR is a shift register of which the input bit is a linear function of its previous state. The above photo depicts a pseudorandom number generator (PRNG) made up from a a CMOS 4015 shift register and a 4030 XOR gate.
Via the contact form.
Eric posted an update to his Simple DIY EMG we covered previously:
Using a cheap opamp to make a buffer, you can use any WAV-capable pocket recorder to make an electromyogram. You don’t need the expensive one I originally specified.
Via the contact form.
Christopher Woodall from HappyRobotLabs shared this Water LED Art: Making LEDs Light Up With Water:
I wrote up a little explanation because the BUILDS hackerspace at BU wants to recreate the wall for an exhibit and maybe make a water based input system. Mostly we just found it cool an inspiring.
Via the contact form.
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:
Continue reading “Free PCB coupon via Facebook to 2 random commenters”
