I buy a 2.4GHz telemetry kit (based on XBee Pro S1 module) from Buildyourowndrone. I made some test with the APM 2.0 and a 5V source all was working nicely, only the XBee module on the XtreamBee Board was a littlebit to hot for me.
I connect all this stuff on a 5V UBEC. Result, the XBee module on the XtreamBee Board burned ! I check the UBEC -> 5.2V OK but the XtreamBee Board as a 3.3V converter... I check the XtreamBee Borad there is a "direct" connection between the CTS and the 5V source without a level converter !? I made some search and find that this fix is a workaround for the XBee Pro 2.4GHz !? But, the XBee Pro module is not 5V tolerant:www.digi.com/pdf/ds_xbeemultipointmodules.pdf
I connect the other XBee Module on the XtreamBee Board and a 5V power source and check the 3.3V line on the XtreamBee board, I measured 4V that not normal!?
I check the voltage without the connection between the CTS and the 5V -> 3.3 V !
Is my XtreamBee Board faulty ?
Is the connection between the 5V and the CTS the good solution ?
Can some one else check the voltage on the 3.3V pin (only on the 2.4GHz Xbee telemetry kit)
PS: Sorry for my bad English!
I can't help, but I am having issues with my 900 mhz xbees, My xstream adaptor on the drone side is doing nothing now but solid leds, it worked great for a few days and seems to have died. I am powering directly off the bec on the esc. I have been posting all weekend, with no response. My multi meter is dead, so I can't go as in depth, but I think it is the xsteam bee having an issue. What manufacture date is on your xstream drone side?
The CTS modification was made by Buildyourowndrone, I think that this mod is not necessary for the 900MHz module !?... That mod is only a workaround for the 2.4GHZ module not a real/tested solution...
Nobody has this 2.4GHz kit ?
Can some on check the voltage between the GND and the 3.3V pin ?
Tops, I don't use the XtreamBee board so can't check but have you contacted Build Your Own Drones - Martin there is alway helpful and I'm sure he'll know what it should be,
Paul, I contacted Martin about this problem. He checked only the functionality of a new kit ! My kit was working (hot)... But burned after I connect a 5.2V source.
I ask him to measure the voltage between GND and 3.3V but no reply !
Hallo,spreche leider kein Englisch.
Habs gerade gemessen, 3,78 V
Mein Xbee ist auch von Martin
Es ist nicht sehr gut! Den Xbee Module ist max. 3.3V !?
Is not good ! The Xbee module can't handle more than 3.3V !
Ok, is a general problem ? The workaround (connection between the CTS and the 5V) can burn your XBee module ?
Can someone else check the voltage ?
Thanks Umer, with a 2.4Ghz XBee Pro S1 module connected?
Yes with the 2.4 GHz XBee-PRO RF Module RPSMA S1 connected. My 2.4 GHz XBee-PRO RF Module Whip Antenna S1 is unserviceable so with it the voltage was around 0.3 V. See
The repercussions of the failed Xbee were huge. My APM1 got fried. Now ordering the 3DR RadioTelemetry Kit-433Mhz. Lets see how it performs.
I have a 2.4GHz kit from buildyourowndrones in the UK which I have just got working today. With my initial set up, I measure 4.69V across the GND to + 5V pin (output from the AMP 2 board) and 3.67V across the GND to 3.3Vpin. The 5V input pin is solder bridged to the CTS line.
I am planning to add a separate UBEC to power the APM2. If the voltage on this is closer to 5V, then the 3.3V would also rise and I could face the same problems. Is there a fix for this?
Martin from buildyourowndrone send me a replacement kit (thanks to him). I will check the voltage across GND and 3.3V pin... You can try to remove the connection between the CTS en 5V and connect the CTS to 3.3V...