Today, I got the Dexcom talking to a Teensy 3.1 and a Circuits@Home Usb Stick. Each of these boards is 0.7" X 1.5". I've had these around for about a month, and they've been frustrating me. Finally set aside today, as a day of failure, to work through the assorted issues.
FYI, I'm accumulating boards and watches at an alarming rate.
My problem here, is I was trying to just get the Chronos working with these circuits, since, in my mind, it's simpler. Finally on a whim, I broke the code out for just the Dexcom, and it works.
I can plug yet another stick of gum size board into this mess, and I'll have either bluetooth or Ant+. At this point, I may go with Ant+, simulate a HR packet, and use a Timex Ironman Watch. I don't own that watch yet though...
The Ant+ dongle is insanely small, I'll attempt soldering that tomorrow.
Wow! Again, wow! With power management, you should be able to create a container roughly the same size as the Dexcom receiver (probably thinner) that could be used to transmit to a cell phone wirelessly or a watch like you are using (or both)! Am I understanding that right?
ReplyDeleteThat's about right, the battery is going to be the largest part. Within the next 2 weeks I should have something together. About 8 hours for a 2400 mAh battery. With the Dexcom charging disabled, this may get allot better.
DeleteWe're down to 125mAh.
DeleteAny way of getting my hands on one of your Prototypes ?
ReplyDeleteOr helping you finance a Bluetooth version ?
There's legal issues, this is a medical device etc... I share what I can. The point here is, we're at an interesting point with technology, where allot is available to the consumer. The setup I use with the Raspberry Pi, is a bunch of store bought components plugged together. There's a great python app for talking to the Metawatch and there's also some Python code out there for the Dexcom.
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