Member #124781

Member Since: March 12, 2010

Country: United States

  • You may want to use a wording stronger than "recommend" when describing when to use these RF products. If someone uses the 434 MHz version of this board in the USA without an appropriate radio licence (434 MHz license free ISM does not exist in USA), technically they are in violation of FCC rules, as I understand.

  • I understand your point. If I had to make a guess, it may, in part, be due to the brand name : "Moog" A very well known / prestigious name in the music world.

  • This is a great little board -- it fits right in where the older versions of the SFE logic level converters went and works better! So glad that Sparkfun redesigned the board for full flexibility on all channels! Thanks sparkfun -- using these things all over the place in my mixed voltage digital projects!

  • the robotics 101 videos are great! I'm very glad Sparkfun is carrying the Actobotics line. I noticed in today's robotics 101 video it was mentioned that Sparkfun is not carrying the Makerbeam products anymore. Is it also planned to stop carrying the Microrax products as well? While there may be some limitations of microrax compared to actobotics parts, the microrax / makerbeam products serve for smaller structures and smaller robots whereas, IMO, Actobotics seems to shine for bigger robots and structures.

  • A little tip I learned about NPN vs PNP transistor schematic symbols. NPN stands for "Not Pointing iN". PNP stands for "Pointing iN Pointer". Not sure if you ever heard of those or not, but thought I'd comment anyway.

  • Can't wait to give the 4ch bidirectional logic level converter a try! Been using the TX lines (the bidirectional part) of the older logic level boards and wished I had more bidirectional lines, now I have them!

  • Well, I'm going to comment on this product. Generally it is great to have and I'm using it on several circuits. I have found that, when using the RX lines (since they are simple voltage dividers) that in a few (not very often) situations, the shifted voltage does not work correctly for the low voltage receiving device. I have been agonizing over why serial data from a GPS chip is not seen by an ARM processor's UART. I finally switched over to use the TX (really bi-directional) line and now the data is coming through. If Sparkfun has the opportunity, though it may up the cost of this cute board a little bit, but I would suggest they use the MOSFET circuit's on both data directions for more accurate level shifting.

  • Does this have level shifters on it so that it is compatible with 5v logic?

  • So, I have a question, I see there is a voltage regulator on this board (by looking at the schematic). The question I have is if I have my own external 3.3V regulator, can I power this board directly from that by hooking it to one of the 3.3V pins on the board (like near where the "Power" label is on the board. I would appreciate it if someone could answer this. I'm planning on hooking this up to non-Arduino stuff and want to make sure I get the power, etc hookups right.

  • Are these standoffs compatible with Makerbeam bars? Just curious -- if they are, you should say something about that in the product description

No public wish lists :(