http://www.ebay.com/itm/Mini-Pro-Micro-ATmega32U4-5V-16MHz-Replace-ATmega328-Arduino-Pro-/191756162028?hash=item2ca58ed3ec:g:eWYAAOSwnH1WZ8IF1cm shorter than the Nano.a bit more "ready-to-run" than the Pro Minithe 5v version is 16mhz
Ooo, and it comes in 3.3V flavor as well. http://www.ebay.com/itm/New-Pro-Micro-ATmega32U4-3-3V-8MHz-Replace-ATmega328-Arduino-Pro-Mini-M94-/351493857244?hash=item51d6aa9fdc:g:ZNYAAOSw8cNUNjmEIt's actually smaller than the Pro Mini if you take into account the programming headers on the mini either add additional height (straight pins) or length (90-degree pins).
dazwadimzayin! wait? what? why do you WANT to go 3v? now you can use the WT588D_U guilt free. you get less wiring, and a faster cpu by double. all devices can be 5v and USB. no need for a 5v regulator,.. no need for 2 V+ going into the WT.. so many pluses.
Have you tried a legit distributor?http://www.digikey.com/product-search/en/sensors-transducers/accelerometers/1966355?k=ADXL335http://www.mouser.com/Sensors/Motion-Position-Sensors/_/N-6g7q6?Keyword=ADXL335&FS=True
Yeah, there are a lot of pluses to be sure. I have been building these for quite a while now and tried lots of different things. I just like the 3.3V setup because it offers the greatest flexibility and ease for the particular way that I do things. Remember that the parts I use (WT588D 16p and GY-61 ADXL335) both require a 3.3V source.
All finished And here's a link to the high res pic as promised:https://www.dropbox.com/s/e79t2a7bo8ggo4w/Spectrum%20saber%20board%20-%20ADXL%20varient.jpg?dl=0
It needs to be attached to the 3.3V rail somehow and only fed regulated voltage. 2) This will work perfectly for a 3.3V Arduino variant, but will be incompatable with 5V Pro Mini or Nano.
I believe the 3.3V on a Nano comes from the FTDI chip, and is only capable of 50mA.