John Keefe made this DIY pulse oximeters, that is available on Github: The heart (ha) of the project is the Pulse Oximeter and Heart Rate Sensor, which includes the sensor itself, a tiny brain to make the measurement calculations, and two “Qwiic” connections. Qwiic is Sparkfun’s system of making it easier to wire up sensors. […]
Jan Henrik writes, “I just recieved some postbags from Sparkfun with Ding and Dents, so I decided to make a review, what I got and if its worth it…” Via the contact form.
Sqkybeaver let us know Sparkfun now carries a scope similar to the one he reviewed. It is a two channel 100MHz digital scope with 500MSa/s real-time sampling rate. Saving waveforms to a USB flash drive is available, as well as interfacing with the computer over the USB port. The waveforms and menu are displayed over a 5.7″ LCD Screen. Via the forum.
A product comparison from the forum: I recently compared two similar 3V -> 5V boost circuits, the Sparkfun #08999 5V out @ 100 mA (based on NCP1400) and the Pololu #798 5V out @ 200 mA (based on NCP1402). The details are below, but the executive summary is: the Pololu 5V boost circuit module has […]
Free video chat by Ustream Send a Tweet to @dangerousproto and watch it print live on the USTREAM feed. Thermal Tweeter is hacked together from a SparkFun thermal printer and the web platform internet development board. No computers are used to query twitter or run the printer, this is a 100% stand-alone Twitter appliance. This […]
SparkFun has announced the upcoming release of their IOIO for Android Board. The IOIO (pronounced “yo-yo”) is a board specially designed to work with your Android device (OS versions 1.5 and greater). The board provides extensive and robust connectivity to an Android device via a USB connection. The IOIO is fully controllable from within an […]
SparkFun made a second trip to Shenzhen, China. Seeed Studio is located here, as well as some impressively massive electronics markets: After checking out a handful of factories on the geek tour in 2009, it was time for me to return to China to visit some of the factories that make goods for SparkFun. …half […]
Markus writes: During yesterdays DDOS attack Free-day at SparkFun I was able to get through just one time during the two hours the event lasted. Therefore I managed to acquire 10$ (and got 2$ donated to charity). Because I have no use for it, I thought I give it to you. It is worth 10$ […]
MichaelZ tipped us to BatchPCB: SparkFun BatchPCB Marketplace has some interesting boards for sale. Most of them are undocumented but some have some sort link to more info. Thanks McZ! Via the forum.
Nathan Seidle, founder of SparkFun Electronics, spoke at the Google campus in May. Hear about the early days of SparkFun, and how they became the 800lbs gorilla of hacker hardware. Via Hacked Gadgets.
Here’s some highlights from the past week, in case you missed them: USB Infrared Toy firmware v07 with bug fixes Updated WinLIRC plugin supports transmitting with the IR Toy SparkFun has the Logic Sniffer in stock. Thanks for helping us raise awareness of this open source project Honken demoed the first open source USB stack […]
SparkFun has a limited number of Logic Sniffers available. If you’ve been waiting for a North American distributor, now is your chance to pick one up at SparkFun. This is the same hardware designed by the Gadget Factory and Dangerous Prototypes, and manufactured by Seeed Studio. A special thanks to SparkFun for helping us raise […]
Fragile connectors on the SparkFun Nokia knock-off LCD are a headache. They’re not rated for multiple insertions, but we can usually move them very carefully on a final prototype. A mating connector we soldered must have warped from the heat. It ate two LCDs right away. On the right is the ‘good’ from a few […]
SparkFun has a tutorial about playing WAV files with an 8-bit AD5330 Digital Analog Converter (DAC). The AD5330 has an 8-bit parallel interface and operates from 2.5v to 5.5v. SparkFun uses an Arduino, micro SD shield, and AD5330 breakout board to play WAV files. The Arduino reads uncompressed WAV files from a FAT formatted SD […]
Months ago SparkFun mentioned that they were working on something similar to the Bus Pirate. We asked them to please consider using the Bus Pirate design because it already has a bunch of features, and it’s in the public domain. Today we received a prototype of the SparkFun Bus Pirate. SparkFun is the fourth company […]
Uwe sent some photos of an XMOS development board from SparkFun. We had never heard of XMOS, but Uwe explains: The XMOS concept can be seen in direct competition with FPGAs – simple logic design in software (C/C++) using very complex standard logic cells (XCORE) while FPGAs use far simpler standard logic cells that require […]