OverviewCurrently there are over 422 million people worldwide suffering from diabetes. 28.5% of them suffer from Diabetic Retinopathy(1) . 50% of diabetics are unaware about the risk of losing their vision(2). The number of cases of diabetic retinopathy...
The OriginsWhen we decided to throw a party in LA (which became know as The Gathering) I wanted it to be more than just free t-shirts and beer. Laser Graffiti popped to mind and I was glad that Ben was willing to take the lead on that project....
STM32103RET6 ARM Cortex (currently, if i can't make the ADC behave and the SPI SLAVE to work correctly then going to flip back to the SAM7, which would suck a lot. (which we ended up doing for this round) ) I have still continued the STM32 build...
I'd always wanted a CPU gauge for my computer. Ok, and a bandwidth gauge for my router. You name it, I want a nice analog gauge for it. It always seemed a bit silly to use an true galvanometer based analog gauge for signals that are inherently digital....
Currently the project requries development in the following areas:CASUAL Core must be split into OS-Specific packages. UI work is needed. Monitization in-app is also a consideration.
Intending to keep this as compact as possible I'm looking at BGA packages for SRAM and std package for the SPI Flash. The several that I've chosen will enable me to keep costs below $30 for the whole board (target = $25) and still have head room...
The main controller board is an off-the-shelf Parallax Quickstart board. I designed and built a custom shield that provided a power supply for the project and driver outputs (TC4427) for the LED strings. Though we didn't use it, the board also holds...
Arduino reads voltage from voltage divider with standard 10k resistor and NTC. Breathing causes NTC to change resistance which leads to voltage changes on divider. ATmega328 in Arduino reads voltage with ADC and passes data to LabView function. Function...
Details, details ,details..... It's alive. (The electronics/coding is actually the easy part...) The real challenge is those semi-translucent tubes... Found some cheap transparent tubes at Home Depot used for storing flourescent light-bulbs. 1 1/2 "...
I needed to remove the dials and the switch from the board because I wanted to have them accessible from the rim of the ear muff. However, each of these components had a minimum of 5 pins. My approach was to use a hot air gun to melt all the solder on...
I needed to remove the dials and the switch from the board because I wanted to have them accessible from the rim of the ear muff. However, each of these components had a minimum of 5 pins. My approach was to use a hot air gun to melt all the solder on...
Hardware used. Seeeduino v1.1 Phaktor bought this a few years back, played with it a couple of times but it just sat in his hobby bin ‘til now. Parallax LCD http://www.digikey.com/product-detail/en/27977/27... bought from RadioShack...
The transmitter in the fourth picture uses a few more parts. I had a 3.3V breakout board and the signal reached only about a yard. So I added a 555 voltage doubler to Albert's hardwarehttp://www.talkingelectronics.com/projects/50%20-%20555%20Circuits/50%20-%20555%20Circuits.htm...
Heres how to make it :Unscrew the back off the laser pen.Remove the cap off the ink pen and cut the tip off about the height of the three batteries from the laser pen .Drill a hole in the tip of the ink pen cap and drill two holes through the back of...