SparkFun Kegerator Goes To Eleven

September 10, 2009 by Phil Burgess 19 Comments

It started with a simple need: keep tabs on SparkFun Electronics’ in-house kegerator so the beer won’t run out at inopportune times. But of course SparkFun and “simple need” make strange bedfellows…throw beer in the mix, and you know this can’t end well. The result, as you might imagine, reads like a who’s-who of electronics hackery buzzwords.

Arduino? Check. Custom PCB? Check. Web interface? Check. Twitter feed? Check.

They’ve assembled a nice build tutorial on how this all went together, including code, example circuits, an explanation of some of the sensors used, and links to other tutorials for such things as Twittering and persistent storage in EEPROM using Arduino. Not to mention the eye candy: a custom Arduino shield (solder mask and all), custom acrylic tap handle, custom SparkFun pint glasses. They never do anything halfway, do they?

Arduino As IPod Remote Control

September 8, 2009 by Mike Szczys 7 Comments

[David] had an Arduino in search of a project. He decided to make an Arduino powered iPod remote control using an ipod connector breakout board and a 3.3v to 5v level converter (both from SparkFun). The circuit was built on a mini breadboard, controlled by an Arduino Mini, and housed in an Altoids tin. To talk to the iPod the Apple Accessory Protocol is used. With driving in mind [David] connected a Staples Easy Button as the play/pause button. This is a good example of how to interface Arduino with iPod. Using his example code we’d like to see more people working on homemade iPod accessories.

Regulated Breadboard PSU

August 25, 2009 by Mike Szczys 15 Comments

sparkfun_bbpsu

SparkFun has released a breadboard power suppy that can provide regulated 3.3v or 5v. Unlike the supply we saw from adafruit industries earlier this summer, this one is based on an lm317. This small device features on/off switch, voltage selection swith, and appropriately spaced pin headers to plug into both the top and bottom rails of a standard breadboard. Rather build it yourself? Take a look at the schematic provided (PDF).

Tiny Bluetooth Teardown

August 8, 2009 by Eliot 38 Comments

minibluetooth

The folks at SparkFun were startled by how small USB bluetooth adapters had become so they split one open. They noted a few interesting design features. It has a small folded trace antenna on the board edge. The metal USB housing acts as the RF shield. The bluetooth IC is an AS3620QA. Now we wonder what those tiny Buffalo drives look like inside.

Related: Eye-Fi teardown, storage/WiFi in an SD card

SparkFun Open-sources Latest Kits

July 2, 2009 by Zach Banks 8 Comments

09205-5

SparkFun has started to release some of their kits as open-source hardware. Projects such as ClockIt, a simple alarm clock, have their schematics, board designs, and source code released under the CC-by-sa license. Although most of their widgets and projects already had example code and schematics available, they are now using an open-source license. They are joining adafruit and EMSL and others in pushing OSH, but it is interesting to see an established company turn to this. Normally, startups do this to encourage early adoption.

[via adafruit]

Brew Fridge Thermostat

March 22, 2009 by Eliot 32 Comments

thermostat-1

Reader [Will R] sent in a thermostat mod for his brew fridge. His friends had found a perfectly fine bar refrigerator and wanted to repurpose it for brewing beer. A previous batch of microbrew had been mangled by the Australian heat so they wanted something that could maintain the perfect temperature. The fridge’s built-in thermostat wouldn’t rise above 5 degrees so they had to build their own. [Will] used a 10K NTC thermistor to measure the temperature. It’s connected to an ATtiny25 microcontroller that does the comparison and determines whether to turn on the compressor. He referenced SparkFun’s relay tutorial for the switching side. Although he didn’t etch a board for this project, the design file is included along with all the code on the project site.

BatchPCB Now Even More à La Carte

March 11, 2009 by Eliot 39 Comments

boards

BatchPCB is a low-cost PCB manufacturing service run by retailer SparkFun in cooperation with Gold Phoenix. Using them, you can get your design prototyped for as little as $2.50 a sqin. We used the service in our “How-to: Prepare your Eagle designs for manufacture“. The service collects orders until they have enough to manufacture an entire panel. It may take time to get the boards back, but they’re high quality. BatchPCB just added a brand new feature: Now anyone can list their verfied design files on the ‘products‘ page for other hobbyists to order runs of. Yes, people could always upload free designs themselves, but this makes it much easier to order a board even if the designer has no plans of making a kit of it.