Hi Everyone,OK, I'm OnTheAir (As the light-up signs used to say)... I'm running gerg's latest library and after realizing he's running serial@9600, I have data going both ways with PingPair. Yahoo! Running one UNO and one Seeeduino and plain nRF24L01 boards with built-in PCB antenna...
I get about one timeout in 10 transmissions... No difference between distances of 2cm and 3M . These are the smallest radios I've ever used..
I'm assuming the error rate is actually a false positive. There have been a number of driver issues along these lines. I think Maniacbug even mentioned he recently fixed one. I'd have to look to see if that fix is part of the branch you're using.
... You said you're running gerg's branch, which does not yet have the major fix that produced plenty false failures.That said, failures are a fact of life. This is documented by Nordic. It's particularly acute at 8-bit CRC. At 16-bit CRC, 1MBps data rate, channel 100, units 12 inches apart, I almost never get any failures.
Sorry for my english
I use RF24's sketch example : pingpair_test.pde
Did some controlled range tests tonight. Will post the detailed results this weekend. Here's the highlights:* Non-plus unit, 2MBps (worst case), 41+ ft line of sight indoors, immediate dropoff with any deviation from LOS. (41 ft is as far as I can go in my house without turning a corner)* Plus unit, 250kbps (best case), 46 ft around two corners indoors, 49 ft around one corner. More importantly, at 250k, packet loss is almost negligible through almost all of that range.* Both units at 1MBps, plus unit gets about 10% range improvement over non-plus in almost all situations.
Excellent. Thanks so much for sharing those results! I guess its safe to say 250Kbps data rate provides considerably improved range.
Quote from: gerg on Aug 04, 2011, 03:47 pmExcellent. Thanks so much for sharing those results! I guess its safe to say 250Kbps data rate provides considerably improved range.Absolutely. 46ft around two corners is impressive. This covered the majority of possible position pairs in the upstairs of my house, though not all.
As some are creating networks in their yard or outdoors, do you have any plans to test longer LOS ranges; such as outside?