Updated web server on a business card

megabug posted an update on the web server on a business card: [via]

I am using my own board, but changed the code to fit the Web platform!

My board is based on an old board from Ian, which was posted on hackaday.com but now with SMD Ethernet jack, dsPIC33FJ and other changes. 😉

There are also some information on my website

Updated web server on a business card – [Link]



Si4707 weather band radio receiver ICs

NashblackCat writes to inform us of a chip that reads weather radio data: [via]

Silicon Laboratories makes an IC Weather Band (WB) radio called the Si4707. This IC is capable of using the specific area message encoding (SAME) and also supports the detection of the 1050Hz alert tone that is used by the National Weather Service. Currently no Arduino shields exist that could be used in a manner to receive, use, and/or display the broadcast alert data such as severe thunderstorm or tornado warnings. I think a shield like this would be great to implement all kinds of interfaces to this publicly available data resource. Some examples include Twitter alert system, VOIP streaming of audio broadcasts to your cellphone, and even a radio

Si4707 weather band radio receiver ICs – [Link]

Hybrid SID player update

Markus concludes his SID player project: [via]

To conclude this project, I added a headphone amplifier to the perfboard. I had this in my mind when soldering the other parts on it, so luckily there was enough space left :) Here is the updated schematic and some pictures of the finnished board.

Hybrid SID player update – [Link]

chipKIT Uno32 review and benchmarks

Want to know more about chipKIT programming and speed? Check out Hack a Day’s complete review of the hardware and IDE. [via]

chipKIT Uno32 review and benchmarks – [Link]

Touchstone Semi Coolest Op Amp design competition

dangerousprototypes.com writes:

Touchtone Semiconductor is a startup company whose products include an op amp known as the TS1001, which they say is the only such component to operate on 0.8 V and 0.6uA.

They’ve announced a Coolest Op Amp design competition for developers who incorporate the TS1001 into their designs. See the Touchstone Semi’s website for a list of the rules, prizes and deadlines.

Touchstone Semi Coolest Op Amp design competition – [Link]

PWM (Pulse Width Modulation)

Another clever trick from the world of electronics – Pulse Width Modulation is a simple method for controlling analog devices via a digital signal. It’s also a very efficient way to drive motors, lamps, LEDs, & more. [via]

PWM (Pulse Width Modulation) – [Link]

DIY Bluetooth Shutter Release

If you’re looking for more control than the average shutter release cable, then you should check out this DIY Bluetooth shutter release from YouTuber Scott Wallace. Using an Arduino Uno, BlueSmirf Bluetooth transceiver, and some perfboard, Scott fashioned a device capable of accepting commands over the air from his Android handset. [via]

The camera I’m using is a Nikon D90, but this same controller would work on all Nikons that have the same shutter release/GPS port as the D90. Additionally, I’ve read about Canon and Sony DSLRs also having a wired shutter-release port that operates in the same way, you’d just have to find the pin-out of those ports and make your own connector .

On the Android side, right now I’m using SENA BTerm as the Bluetooth terminal. This isn’t a long term solution, but for now is a proof-of-concept that camera control from the phone is possible.

DIY Bluetooth Shutter Release – [Link]

MTM Snap, a Snap-Together CNC

The MTM Snap was designed by Jonathan Ward of MIT’s Center for Bits and Atoms. It costs about $500, runs off an Arduino, is CNCed out of HDPE, and can mill a 5″ x 3″ x 1.75″ area. Design files and BOM are available if you want to make your own. [via]

MTM Snap, a Snap-Together CNC – [Link]

3D printed glazed ceramics

Drone writes: Now you can 3D print in glazed ceramics at Shapeways. Great! I need some big HV insulators for the electric chair I’m building. Interestingly, prices are based on surface area. [via]

Glazed Ceramics is perfect for any application such as a plate, cup or bowl as it is the first 3D printed food safe material available on Shapeways. Shapeways 3D Printed Glazed Ceramics material properties are exactly the same as standard ceramics as it is produced with fine ceramic powder which is bound together with binder, fired, glazed with lead-free, non-toxic gloss finish.

3D printed glazed ceramics – [Link]