SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!


Member Since: December 29, 2011

Country: United States



  • For those wondering, the mounting holes are set 3.4" x 2.2"

  • On the 5V version, the USB power is shorted to the regulated 5V power, so it’s hard to say how much of each. I took the guesswork out by removing the USB power fuse (labeled “F” on my board), which means the board can only get power from the RAW pin via the regulator.

  • Testing here, it seems that the receiver outputs a high (lit LED) by default, goes low when the transmitter sends low, and then drifts back up to high after a second or two. No chips, only buttons/resistors/LED. I read somewhere that this receiver adjusts input gain until it gets something, which might explain the drifting high.

No public wish lists :(