Hello everybody,

I just joined the communityand I hope i can get some help from you guys.

I have researched the internets on this topics and could not find a definitive answer so here it goes:

I bought a telemetry and bluetooth module (hc-05) from ebay a week ago. for the past two days i was trying to get them too work with MissionPlanner. The telemetry unit works great and connects to  MP no problem. USB also works for connecting to MP.

My ground module has a USB port, and there is no easy way to connect the bluetooth to it. So what i did, i soldered 2 wires directly to the HM-TRP (RX and TX) and got my 5V and GND from the outer USB connections (it later translates to 3.3V for the HM-TRP board). I connected the two wires (rx and tx) to my bluetooth module (already configured to 57600) and separately powered it up. 

Now the problem arises when i try to connect. I would get my  heartbeat and all the statuses working ( yaw pitch distance, height etc) but i would never get the parameters. it gets stuck at "Getting Params". i checked the status and saw that a lot of packets were lost. 

I have tried unclicking the "reset APM on USB" and that doesnt do anything. The only way I got the parameters to download was to connect the ground module USB to one computer, and the bluetooth to another computer, both tunning MP, i would connect the bluetooth one first until it gets stuck at the getting params, then I would connect the USB one. what happened is that as soon as the USB connection started loading the parameters, so did the bluetooth one. Makes me question if the Bt module cant send a request to receive parameters or something of the sort. 

Any help would be appreciated.

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • finally solved it.

    for anyone that ever comes across this issue, make sure that you have the ground module and the bluetooth module connected to the same ground.  still having the issue with MP not connecting to BT right away, but that usually is fixed by turning BT module on-off right before pressing connect.

    • Hi,

      Can you post a picture or two of the setup ?

      If there were off the shelf product giving you this functionality + battery + USB connection for setup and charging , will you consider buying it ? for how much ?

      Thanks, Eddi

      • the setup is internal to the transmitter. and i believe there is an off the shelf product by event38. But that one was way too expensive.i would pay the price of the parts + a little bit extra.. my parts were around 30-40USD

        • Okay, thanks.

          Yes I saw their box, very expensive.

This reply was deleted.

Activity

DIY Robocars via Twitter
RT @a1k0n: Did I get rid of hand-tuned parameters? Yes. Am I still hand-tuning more parameters? Also yes. I have a few knobs to address the…
Monday
DIY Robocars via Twitter
RT @a1k0n: I'm not going to spoil it, but (after charging the battery) this works way better than it has any right to. The car is now faste…
Monday
DIY Robocars via Twitter
RT @a1k0n: Decided to just see what happens if I run the sim-trained neural net on the car, with some safety rails around max throttle slew…
Monday
DIY Robocars via Twitter
Saturday
DIY Robocars via Twitter
RT @SmallpixelCar: @a1k0n @diyrobocars I learned from this. This is my speed profile. Looks like I am too conservative on the right side of…
Saturday
DIY Robocars via Twitter
RT @a1k0n: @SmallpixelCar @diyrobocars Dot color is speed; brighter is faster. Yeah, it has less room to explore in the tighter part, and t…
Saturday
DIY Robocars via Twitter
RT @a1k0n: I'm gonna try to do proper offline reinforcement learning for @diyrobocars and throw away all my manual parameter tuning for the…
Sep 23
DIY Robocars via Twitter
RT @circuitlaunch: DIY Robocars & Brazilian BBQ - Sat 10/1. Our track combines hairpin curves with an intersection for max danger. Take tha…
Sep 22
DIY Robocars via Twitter
RT @SmallpixelCar: Had an great test today on @RAMS_RC_Club track. However the car starts to drift at 40mph. Some experts recommended to ch…
Sep 11
DIY Robocars via Twitter
RT @gclue_akira: 世界最速 チームtamiyaのaiカー https://t.co/1Qq2zOeftG
Sep 10
DIY Robocars via Twitter
RT @DanielChiaJH: Always a good time working on my @diyrobocars car at @circuitlaunch. Still got some work to do if I’m to beat @a1k0n howe…
Sep 10
DIY Robocars via Twitter
RT @SmallpixelCar: My new speed profile for @RAMS_RC_Club track https://t.co/RtLb7TcgIJ
Sep 10
DIY Robocars via Twitter
RT @SmallpixelCar: Practiced at @RAMS_RC_Club today with my new @ARRMARC car https://t.co/AEu2hCx89T
Aug 28
DIY Robocars via Twitter
Aug 24
DIY Robocars via Twitter
RT @gclue_akira: 柏の葉で走行させてるjetracerの中身 #instantNeRF #jetracer https://t.co/giVvuE4hP7
Jul 4
DIY Robocars via Twitter
Cool web-based self-driving simulator. Click save when the AI does the right thing https://github.com/pncsoares/self-driving-car
Jul 4
More…