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One to rule them all :)
Thanks all of you guys, It was really straight forward adding the module on my Devo 7e to control all my Hubsans and I need to say, WHAT A DIFFERENCE! I don’t want to touch the stock Hubsan TX anymore. The precision of the command is so much better!. Really happy with this mod!
In the following you will find two links that may can help you: A7105-500m wireless transceiver Antenna Model.ini basic for HUBSAN X4 fully functional Also check the pictures of my build. Regards |
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Now you are able to experience what makes the difference between 512 and 2048 stick resolution ![]() Soon you will be able to maneuver ther X4 to a pinpoint precision. (ever tried to land repeatedly on a turned over small cup?).... -mike- |
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For some reason, of all my quads...the X4 is the "most improved" when I bound it to my Devo7e.
I mean, all of the models flew much better with the Devo7e versus it's stock TX. But the Hubsan X4 is the one that sticks out the most in my experience. A hate...love affair depending on the radio I fly it with. And it still holds true when I go back to the stock TX each time a new flavor of X4 comes through my lab. Glad you're experiencing the same feeling as me. ![]() |
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@Telemachus
Clean work. I like using ribbon cable on all my installs as well. @eaman Yes, just that single pad right about the VDD. If you trace it with the multimeter, you will find that it connects to the VDD pad. In fact, you can see the trace that connects the two. Therefore, there's two VDD location to solder to. As for the grounds. It's everywhere. For instance, each of the corner of the RF shield is a ground point. Big, fat, easy to solder to. ![]() |
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I initially did the A7105 mod with a cheap, low power A7105 http://www.ebay.com/itm/AMIC-A7105-W...-/280953247359. Then, once I got an A7105 with a PA, I swapped them I will go back to the low power one. What I just discovered is that my amplified module uses power even when I'm not using a protocol that needs the A7105. Even if all I do is to fly a DSM model, my battery life has been cut significantly Given that I managed to get 15+ meters with the low power unit (never really did a range test, but I don't need more range for the X4 anyway), there's no real advantage in having the amplified module Just a word of caution to people considering the A7105 mod: unless you really need the longer range, the cheaper (and easier to find) non-amplified modules work just as well, and do not reduce your battery life I asked on the Deviation Tx forum, and seems to be a known issue that at least some of these modules power the PA even when not used. As usual, YMMV, and your module might power off the PA when not used Good thing is that I soldered a 4s wire harness (5 wires) to the Tx, and my modules are swappable very easily, so it's just a matter of reopening my Tx, removing the heat shrink, swap the module, put back new heat shrink (used as insulator), and I'm done. I'll measure power usage when the module is not selected, to confirm the problem (but won't be able to do this for the next 2 weeks, business trip coming) |
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@Daryoon, Yes, and It gets even better, now I can monitor the voltage of my battery using the telemetry feature. I set and alarm and the TX start to vibrate when the minimum voltage is reached indicating that is time to go home, this is a tremendous improvement for my home made FPV X4!
@Robca, Thanks for the advice, I used the same module in a stock Hubsan TX to increase its range and it works fine, but when I swapped to my new Devo 7e the flying experience gets completely different and much better! I have no idea if my module will remain with the PA powered. |
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If power consumption is truly a problem I would imagine a physical switch could be installed between the VCC or GND line of the module.
I still get several days out of 4 AAs |
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![]() A well designed module should power off the PA when not used, btw. It looks like mine doesn't, so I get shorter battery life. I thought I'd mention it, just in case... |
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Yeah, I haven't put my ammeter in line with mine to check current draw, but the modules I salvaged from my 911 and 222 radios _seem_ to power down while not selected. At least the induced hum in some component goes away when I'm using the stock module and not the extra modules.
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I'm setting up the nRF24L01 module: I see that the module "sausage" antenna won't fit inside the plastic antenna of my devo 7e, there's not enough room in the plastic spike for both the original devo and the nRF24L01 one?
![]() What should I do? Can i just leave it a little behind or do I have to drill a hole in the TX and place a new plastic spike cover for it? |
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http://goo.gl/5y4MG3 Seems to work fine and actually increase range with the stock antenna and built-in module. Shanman3us |
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