Member Since: January 18, 2010

Country: United States

  • In the wiring diagram, I noticed that the analog pins are wired directly to the board without a logic level converter (for 3.3V to 5V logic level conversion). I’ll be using an Arduino Uno (5V), so I think the analog pins are expecting voltages between 0V and 5V (values 0 to 255). If I don’t use a level shifter, that means that the input from the ADXL335 will only be between 0V and 3.3V. So does that mean, I need to calibrate the Uno’s sketch to expect a max analog pin value of 168? It would seem this would mean reduced granularity of signal. Is that true?

    I know some logic level converter (like BOB-12099) are only for use with digital pins, but I’m assuming one exists that supports analog signals. Any suggestions?

  • Thanks so much for posting this! This works for me using Arduino v1.5.7beta.

  • I tried this and it was still not staying in. In fact, I’ve had a few actually jump off the board. I ended up tinning each leg with a bit of solder - that seems to work well.

  • I also have a design suggestion for the Fio: Add a capacitor (I’m using 220uF, but you may find a lower value is equally good) between pin 1 (+3.3V) and pin 10 (GND) of the Xbee sockets. I’ve purchased 2 of these and am using them with 2 different Xbees (Xbee S6B Wifi module and Xbee Pro XSC). In both cases, I found I needed to add the capacitor for proper connectivity. For the Xbee S6B, I was unable to connect to the WAP at all without this cap. For the Xbee Pro XSC, I got a connection without the cap, but very poor range.

  • FYI: I just released the “magic blue smoke” from my Fio by supplying it with 11.5V and now it is unresponsive. The Arduino Fio homepage says it can handle 12V, but I’d recommend no more than 10V.

  • I had the same problem, but for me it was .WAV files that were playing back with heavy static. I converted the .WAV files to .AD4 using the utility above and they worked fine. I suspect it’s something wrong with the chip because nothing else I tried was working (adjusting voltage, etc.).

  • I had the same experience - I can’t get the 16kHz .wav files to play. I knocked it down to 11kHz and it worked fine. Also, I was able to get it to work with a SanDisk 2GB card and a Microcenter 2GB card. Both were less than $5.

  • I am wishing Redbot was around a year ago when I was developing my own version

    Since most of the parts for mine came from SparkFun, I guess it should be no surprise that they look remarkably similar.

  • I am wishing Redbot was around a year ago when I was developing my own version

    Since most of the parts for mine came from SparkFun, I guess it should be no surprise that they look remarkably similar.

  • I bought a pair of these to replace some old WiFi shields. The old shields are feature-rich, but unstable due to a memory leak somewhere in the stack I’ve not been able to pin down. Support is limited to the community for that old shield since the chip is discontinued. Here’s my findings so far on the new Arduino WiFi shield in case it helps anyone else:

    When I attempted to port the old sketch to use the Arduino WiFi library, I see that some key features are missing including hard coding an IP address/subnet mask (critical for server functions). IP functions are available, but appear to provide read-only values - it appears to rely exclusively on DHCP. I suppose if I had a fancier DHCP service, I could reserve and IP address for this device, but I don’t currently have that capability.

    Also, I found that the MAC address on the box was wrong (not even close) which resulted in a lot of hair pulling for me since I filter WiFi connections by MAC. I had to run a sample sketch in order to find the actual MAC address.

    In the documentation, it says it only supports WPA2 “Personal” encryption and not “Enterprise”. I had no idea which one I was using, but was happy to discover that it not only connected to my SOHO WiFi router, it connected MUCH faster than my old WiFi shield.

    What I really need right now is a source code sample that shows the use of HTTP GET or POST. This product has only just released, and the sample code the Arduino has published is very basic. I’d greatly appreciate someone pointing me toward additional sample code.

No public wish lists :(