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Bump...Problem solved. The sensor does not like being queried too frequently. For details, see link: http://forums.adafruit.com/viewtopic...AM2315#p204516 (recent) Thanks, Paul!

Folks, I posted on this topic before, regarding a Temperature/Humidity sensor I purchased from Adafruit- the AM2315. I have since learned some interesting new things. For one, the problem that I am having appears only on the Teensy 2.0, but not on my Teensy 3.0. Please see this link...

Of course, can always be a wonky sensor, as well- It's worth noting that I never had a lick of trouble with Teensy 2.0 I2C communications until now...

Sure, I'd be happy to, but won't have an opportunity for at least two weeks. I guess the thing that is bothering me so much is that the Arduino UNO seemed to work so well. What do you suppose the variables could be when comparing the two platforms? Thanks for your quick reply, BTW.

If you are creating a system out of whole cloth that uses serial communications of your own design, it would be a great idea to design a robust protocol that you can use to build data packets that can be easily and reliably passed from one device to another. There are many ways to do this, for...

Hi, Just tried using my new AM2315 Humidity/Temperature sensor with a Teensy 2.0, and I am getting bad data. This is an I2C device available from Adafruit Industries: http://www.adafruit.com/products/1293 Link to the library: https://github.com/adafruit/Adafruit_AM2315 The code is an example...

Folks, I am designing a home-control system using the Teensy 2.0, and I would like to include an XBee radio (probably Series 2) in some of the modules so that I can re-program with the Arduino IDE using a wireless connection over XBee. I have seen this done with the Arduino UNO, but the USB...

Many thanks, sumotoy! Yes, I am aware that the I2C approach can be a little pokey, but I will try the MCP23S17 approach. BTW, that chip is perfectly happy at 3.3V, so I will do that and avoid level-shifters. On to the article...

Dear folks, I am considering getting a LCD Graphics unit (DEV_DISPLAY_128X64) but was wondering if anyone has ever attempted to use it with an I2C I/O port expander like the MCP23017? It would be an interesting challenge to figure this out, but before I proceed, can you think of any issues...

Reverse-polarity protection improvement That's a technique I use frequently, but with two important enhancements: 1. I always put some kind of over-current protection (polyfuse, etc) in the feed to the circuit, ahead of the reverse diode, which eliminates a flame-out if a low-impedance power...

Hi, all- Just ordered a Teensy 2.0 and a Teensy 3.0. They haven't arrived yet, but I am taking some time to prepare myself for their use (first-timer here) My first question is about the 3.0. I looked at the schematic, and was wondering what the auxiliary processor (MINI54TAN) is for? Also...