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New build won't stand
04-01-2017, 06:00 PM
Post: #1
New build won't stand
I just finished putting my b-robot together.

I have the latest code from github installed and the app installed on my nexus 5x.

When you turn it on the wheels spin a bit and the servo moves. Once it stops I connect to the jjrobots wireless. Hitting the servo button does nothing. it never moves and if I manually stand it up the wheels take off and it rips out of my hand and lays down and the wheels keep rolling.

I am sure it's something simple I am missing but a quick search for my problem on the forum did not return anything useful. If anyone can point me in a direction to test that would be great.

Thanks for your help
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04-03-2017, 09:03 AM
Post: #2
RE: New build won't stand
This video helped me to understand how to turn the B-robot on: https://youtu.be/ak3vwWEXtPI?t=709
Are you doing as indicated? If the B-robot moves the servo (arm) that means everything is calibrated. Could you send a photo of your electronics setup?

Are you sure the Nexus 5x is accessing to the WIFI network properly? I mean, the nexus 5x is "famous" for not some "connectivity problems": https://productforums.google.com/forum/#...ORaSZVKu_Q
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04-07-2017, 10:42 PM
Post: #3
RE: New build won't stand
Thanks sorry for the delay I have been sick for the last couple days. I followed the instructions on the you tube video and still not working. here is a pic of my bo


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04-10-2017, 10:46 AM
Post: #4
RE: New build won't stand
If everything is connected (the wires are properly soldered) it should be working. If the robot moves the arm (servo), that means it is ready to move and be controlled:
- communication with the IMU is OK
- No shortcircuits...

The strange movement you have described (wheels keep moving even when it is horizontal) might come from corrupted data from the IMU

Check the debug modes described here: (Very end of this page: http://www.jjrobots.com/b-robot-evo-kit-...ructions/) and let us know if you have the correct data coming from the IMU (set the debug mode==3 for example. Doing that you can check the IMU value -angle- in real time)
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04-10-2017, 08:40 PM
Post: #5
RE: New build won't stand
404 error on that link
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04-10-2017, 09:48 PM (This post was last modified: 04-10-2017 09:50 PM by jar.)
Post: #6
RE: New build won't stand
(04-10-2017 08:40 PM)Billgod Wrote:  404 error on that link

http://www.jjrobots.com/b-robot-evo-kit-...tructions/
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04-12-2017, 02:47 PM (This post was last modified: 04-12-2017 02:57 PM by Billgod.)
Post: #7
RE: New build won't stand
I set the debug to 8.. open serial monitor and all i have is 0's no matter how I move the bot. Also when I upload the firmware I get this


C:\Users\Billgod\Documents\Arduino\libraries\I2Cdev\I2Cdev.cpp:67:14: warning: #warning - Timeout detection (some Wire requests block forever) [-Wcpp]

#warning - Timeout detection (some Wire requests block forever)

is this my problem?

I got it to display boot up..

BROBOT by JJROBOTS v2.2
Initializing I2C devices...
Initializing DMP...
Enabling DMP...
Gyro calibration!! Dont move the robot in 10 seconds...
Initalizing ESP Wifi Module...
WIFI RESET
AT


OK
AT+RST


OK
l`Œãr“l �ž


Ai-Thinker Technology Co. Ltd.

ready
AT+GMR

AT version:1.2.0.0(Jul 1 2016 20:04:45)
SDK version:1.5.4.1(39cb9a32)
Ai-Thinker Technology Co. Ltd.
Dec 2 2016 14:21:16
OK
AT+CIPSTAMAC?

+CIPSTAMAC:"a0:20:a6:17:bd:31"

OK
MAC:A020A617BD31

AT+CWQAP

QAP fail

ERROR
!Timeout!
AT+CWMODE=2


OK
AT+CWSAP="JJROBOTS_31","87654321",5,3


OK
Start UDP server at port 2222
AT+CIPMUX=0


OK
AT+CIPMODE=1


OK
AT+CIPSTART="UDP","192.168.4.2",2223,2222,0

CONNECT

OK
AT+CIPSEND


OK

>
Testing device connections...
MPU6050 connection successful
Servo initialization...
Steper motors initialization...
Adjusting DMP sensor fusion gain...
BATTERY:44
Let´s start...
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05-01-2017, 08:55 PM (This post was last modified: 05-01-2017 08:56 PM by taprik.)
Post: #8
RE: New build won't stand
The warning seems to be related to the version of the I2CDevLib.
http://stackoverflow.com/questions/24610...n-fastwire

The debug 8 is not giving the angle. Debug 1 give the angle.

Nevertheless I have exactly the same issue here.

The debug is giving that :
----------------------------------------------------
Initializing I2C devices...
Initializing DMP...
Enabling DMP...
Gyro calibration!! Dont move the robot in 10 seconds...
Initalizing ESP Wifi Module...
WIFI RESET
AT


OK
AT+RST


OK
l`��r�l ��

The warning seems to be related to the version of the I2CDevLib.
http://stackoverflow.com/questions/24610...n-fastwire

The debug 8 is not giving the angle. Debug 1 give the angle.

Nevertheless I have exactly the same issue here.

The debug is giving that :
----------------------------------------------------
Initializing I2C devices...
Initializing DMP...
Enabling DMP...
Gyro calibration!! Dont move the robot in 10 seconds...
Initalizing ESP Wifi Module...
WIFI RESET
AT


OK
AT+RST


OK

bpslrl
Ai-Thinker Technology Co. Ltd.

ready
AT+GMR

AT version:1.2.0.0(Jul 1 2016 20:04:45)
SDK version:1.5.4.1(39cb9a32)
Ai-Thinker Technology Co. Ltd.
Dec 2 2016 14:21:16
OK
AT+CIPSTAMAC?

+CIPSTAMAC:"a0:20:a6:18:ee:06"

OK
MAC:A020A618EE06

AT+CWQAP

QAP fail

ERROR
!Timeout!
AT+CWMODE=2


OK
AT+CWSAP="JJROBOTS_06","87654321",5,3


OK
Start UDP server at port 2222
AT+CIPMUX=0


OK
AT+CIPMODE=1


OK
AT+CIPSTART="UDP","192.168.4.2",2223,2222,0

CONNECT

OK
AT+CIPSEND


OK

>
Testing device connections...
MPU6050 connection successful
Servo initialization...
Steper motors initialization...
Adjusting DMP sensor fusion gain...
BATTERY:44
Let´s start...
-------------------------------------------------------------

I do have a correct angle in debug but the wheel are spinning at full speed forward. No balance at all.
I've bought a complete kit from jjRobots.
The thing that I don't understand is when I write
Serial.print(" ");Serial.print(dt);Serial.print(" ");Serial.print(angle_adjusted);Serial.print(" ");Serial.print(target_angle);Serial.print(" ");Serial.println(Kp);
at line 801 it gives me the se results :
------------------------
5.00 -0.00 -12.00 0.19
5.00 -0.03 -12.00 0.19
6.00 -0.06 -12.00 0.19
5.00 -0.09 -12.00 0.19
4.00 -0.12 -12.00 0.19
5.00 -0.14 -12.00 0.19
5.00 -0.16 -12.00 0.19
5.00 -0.18 -12.00 0.19
5.00 -0.20 -12.00 0.19
5.00 -0.22 -12.00 0.19
5.00 -0.24 -12.00 0.19
6.00 -0.26 -12.00 0.19
5.00 -0.29 -12.00 0.19
5.00 -0.32 -12.00 0.19
4.00 -0.36 -12.00 0.19
5.00 -0.39 -12.00 0.19
5.00 -0.44 -12.00 0.19
5.00 -0.48 -12.00 0.19
5.00 -0.53 -12.00 0.19
6.00 -0.59 -12.00 0.19
4.00 -0.65 -12.00 0.19
5.00 -0.73 -12.00 0.19
5.00 -0.81 -12.00 0.19
5.00 -0.91 -12.00 0.19
5.00 -1.01 -12.00 0.19
5.00 -1.12 -12.00 0.19
5.00 -1.24 -12.00 0.19
5.00 -1.37 -12.00 0.19
6.00 -1.51 -12.00 0.19
4.00 -1.66 -12.00 0.19
5.00 -1.81 -12.00 0.19
5.00 -1.97 -12.00 0.19
5.00 -2.12 -12.00 0.19
5.00 -2.28 -12.00 0.19
5.00 -2.44 -12.00 0.19
5.00 -2.59 -12.00 0.19
4.00 -2.76 -12.00 0.19
6.00 -2.93 -12.00 0.19
5.00 -3.10 -12.00 0.19
5.00 -3.27 -12.00 0.19
5.00 -3.45 -12.00 0.19
5.00 -3.64 -12.00 0.19
5.00 -3.83 -12.00 0.19
5.00 -4.03 -12.00 0.19
5.00 -4.23 -12.00 0.19
5.00 -4.44 -12.00 0.19
5.00 -4.65 -12.00 0.19
5.00 -4.87 -12.00 0.19
5.00 -5.09 -12.00 0.19
5.00 -5.31 -12.00 0.19
5.00 -5.54 -12.00 0.19
5.00 -5.76 -12.00 0.19
4.00 -5.97 -12.00 0.19
5.00 -6.19 -12.00 0.19
6.00 -6.39 -12.00 0.19
5.00 -6.59 -12.00 0.19
5.00 -6.78 -12.00 0.19
5.00 -6.96 -12.00 0.19
5.00 -7.13 -12.00 0.19
5.00 -7.29 -12.00 0.19
5.00 -7.45 -12.00 0.19
4.00 -7.60 -12.00 0.19
6.00 -7.74 -12.00 0.19
5.00 -7.88 -12.00 0.19
5.00 -8.01 -12.00 0.19
5.00 -8.14 -12.00 0.19
5.00 -8.26 -12.00 0.19
5.00 -8.38 -12.00 0.19
5.00 -8.49 -12.00 0.19
4.00 -8.60 -12.00 0.19
5.00 -8.71 -12.00 0.19
6.00 -8.82 -12.00 0.19
5.00 -8.92 -12.00 0.19
5.00 -9.03 -12.00 0.19
5.00 -9.13 -12.00 0.19
5.00 -9.23 -12.00 0.19
5.00 -9.34 -12.00 0.19
4.00 -9.44 -12.00 0.19
5.00 -9.54 -12.00 0.19
6.00 -9.64 -12.00 0.19
5.00 -9.74 -12.00 0.19
5.00 -9.84 -12.00 0.19
5.00 -9.94 -12.00 0.19
5.00 -10.03 -12.00 0.19
5.00 -10.12 -12.00 0.19
4.00 -10.21 -12.00 0.19
5.00 -10.29 -12.00 0.19
5.00 -10.36 -12.00 0.19
6.00 -10.44 -12.00 0.19
5.00 -10.51 -12.00 0.19
5.00 -10.57 -12.00 0.19
5.00 -10.64 -12.00 0.19
5.00 -10.69 -12.00 0.19
4.00 -10.75 -12.00 0.19
5.00 -10.80 -12.00 0.19
5.00 -10.85 -12.00 0.19
6.00 -10.90 -12.00 0.19
5.00 -10.96 -12.00 0.19
5.00 -11.00 -12.00 0.19
5.00 -11.06 -12.00 0.19
6.00 -11.10 -12.00 0.19
5.00 -11.15 -12.00 0.19
5.00 -11.20 -12.00 0.19
4.00 -11.24 -12.00 0.19
5.00 -11.29 -12.00 0.19
6.00 -11.34 -12.00 0.19
5.00 -11.38 -12.00 0.19
4.00 -11.42 -12.00 0.19
5.00 -11.46 -12.00 0.19
5.00 -11.50 -12.00 0.19
4.00 -11.55 -12.00 0.19
5.00 -11.58 -12.00 0.19
5.00 -11.63 -12.00 0.19
6.00 -11.67 -12.00 0.19
5.00 -11.71 -12.00 0.19
5.00 -11.76 -12.00 0.19
5.00 -11.80 -12.00 0.19
4.00 -11.85 -12.00 0.19
5.00 -11.90 -12.00 0.19
5.00 -11.95 -12.00 0.19
5.00 -12.00 -12.00 0.19
5.00 -12.05 -12.00 0.19
6.00 -12.10 -12.00 0.19
5.00 -12.15 -12.00 0.19
4.00 -12.20 -12.00 0.19
5.00 -12.25 -12.00 0.19
5.00 -12.30 -12.00 0.19
5.00 -12.36 -12.00 0.19
5.00 -12.41 -12.00 0.19
5.00 -12.47 -12.00 0.19
5.00 -12.53 -12.00 0.19
6.00 -12.58 -12.00 0.19
4.00 -12.64 -12.00 0.19
5.00 -12.70 -12.00 0.19
5.00 -12.75 -12.00 0.19
5.00 -12.81 -12.00 0.19
5.00 -12.86 -12.00 0.19
5.00 -12.92 -12.00 0.19
5.00 -12.97 -12.00 0.19
6.00 -13.02 -12.00 0.19
5.00 -13.08 -12.00 0.19
4.00 -13.12 -12.00 0.19
5.00 -13.17 -12.00 0.19
5.00 -13.23 -12.00 0.19
5.00 -13.27 -12.00 0.19
5.00 -13.33 -12.00 0.19
5.00 -13.38 -12.00 0.19
5.00 -13.42 -12.00 0.19
5.00 -13.48 -12.00 0.19
6.00 -13.52 -12.00 0.19
4.00 -13.57 -12.00 0.19
5.00 -13.62 -12.00 0.19
5.00 -13.66 -12.00 0.19
5.00 -13.71 -12.00 0.19
5.00 -13.75 -12.00 0.19
5.00 -13.80 -12.00 0.19
6.00 -13.84 -12.00 0.19
4.00 -13.89 -12.00 0.19
5.00 -13.93 -12.00 0.19
5.00 -13.98 -12.00 0.19
5.00 -14.02 -12.00 0.19
5.00 -14.06 -12.00 0.19
5.00 -14.11 -12.00 0.19
5.00 -14.15 -12.00 0.19
5.00 -14.20 -12.00 0.19
5.00 -14.25 -12.00 0.19
5.00 -14.29 -12.00 0.19
5.00 -14.34 -12.00 0.19
5.00 -14.38 -12.00 0.19
5.00 -14.43 -12.00 0.19
5.00 -14.48 -12.00 0.19
5.00 -14.53 -12.00 0.19
5.00 -14.57 -12.00 0.19
5.00 -14.62 -12.00 0.19
5.00 -14.66 -12.00 0.19
5.00 -14.70 -12.00 0.19
5.00 -14.75 -12.00 0.19
5.00 -14.79 -12.00 0.19
5.00 -14.83 -12.00 0.19
5.00 -14.87 -12.00 0.19
4.00 -14.91 -12.00 0.19
5.00 -14.96 -12.00 0.19
6.00 -15.00 -12.00 0.19
5.00 -15.05 -12.00 0.19
5.00 -15.09 -12.00 0.19
5.00 -15.14 -12.00 0.19
5.00 -15.18 -12.00 0.19
5.00 -15.23 -12.00 0.19
4.00 -15.28 -12.00 0.19
5.00 -15.32 -12.00 0.19
6.00 -15.37 -12.00 0.19
5.00 -15.41 -12.00 0.19
5.00 -15.47 -12.00 0.19
5.00 -15.52 -12.00 0.19
5.00 -15.57 -12.00 0.19
5.00 -15.63 -12.00 0.19
5.00 -15.68 -12.00 0.19
4.00 -15.73 -12.00 0.19
5.00 -15.79 -12.00 0.19
6.00 -15.85 -12.00 0.19
5.00 -15.90 -12.00 0.19
5.00 -15.95 -12.00 0.19
5.00 -16.00 -12.00 0.19
5.00 -16.06 -12.00 0.19
5.00 -16.11 -12.00 0.19
4.00 -16.15 -12.00 0.19
5.00 -16.20 -12.00 0.19
5.00 -16.25 -12.00 0.19
6.00 -16.29 -12.00 0.19
5.00 -16.34 -12.00 0.19
5.00 -16.37 -12.00 0.19
5.00 -16.42 -12.00 0.19
5.00 -16.47 -12.00 0.19
4.00 -16.51 -12.00 0.19
5.00 -16.55 -12.00 0.19
5.00 -16.60 -12.00 0.19
6.00 -16.64 -12.00 0.19
5.00 -16.69 -12.00 0.19
5.00 -16.73 -12.00 0.19
5.00 -16.77 -12.00 0.19
4.00 -16.82 -12.00 0.19
5.00 -16.86 -12.00 0.19
5.00 -16.91 -12.00 0.19
5.00 -16.96 -12.00 0.19
5.00 -17.01 -12.00 0.19
6.00 -17.06 -12.00 0.19
5.00 -17.11 -12.00 0.19
5.00 -17.15 -12.00 0.19
4.00 -17.20 -12.00 0.19
5.00 -17.25 -12.00 0.19
5.00 -17.29 -12.00 0.19
5.00 -17.33 -12.00 0.19
5.00 -17.38 -12.00 0.19
6.00 -17.42 -12.00 0.19
5.00 -17.46 -12.00 0.19
5.00 -17.49 -12.00 0.19
5.00 -17.52 -12.00 0.19
4.00 -17.56 -12.00 0.19
5.00 -17.59 -12.00 0.19
5.00 -17.62 -12.00 0.19
5.00 -17.65 -12.00 0.19
5.00 -17.68 -12.00 0.19
6.00 -17.71 -12.00 0.19
5.00 -17.73 -12.00 0.19
5.00 -17.76 -12.00 0.19
4.00 -17.79 -12.00 0.19
5.00 -17.81 -12.00 0.19
5.00 -17.84 -12.00 0.19
5.00 -17.86 -12.00 0.19
5.00 -17.88 -12.00 0.19
6.00 -17.91 -12.00 0.19
5.00 -17.93 -12.00 0.19
5.00 -17.96 -12.00 0.19
4.00 -17.98 -12.00 0.19
5.00 -18.01 -12.00 0.19
5.00 -18.05 -12.00 0.19
5.00 -18.08 -12.00 0.19
5.00 -18.12 -12.00 0.19
5.00 -18.16 -12.00 0.19
6.00 -18.21 -12.00 0.19
5.00 -18.26 -12.00 0.19
4.00 -18.30 -12.00 0.19
5.00 -18.36 -12.00 0.19
5.00 -18.41 -12.00 0.19
5.00 -18.46 -12.00 0.19
5.00 -18.52 -12.00 0.19
5.00 -18.57 -12.00 0.19
6.00 -18.62 -12.00 0.19
5.00 -18.67 -12.00 0.19
4.00 -18.71 -12.00 0.19
5.00 -18.76 -12.00 0.19
5.00 -18.80 -12.00 0.19
5.00 -18.84 -12.00 0.19
5.00 -18.88 -12.00 0.19
5.00 -18.91 -12.00 0.19
5.00 -18.94 -12.00 0.19
6.00 -18.97 -12.00 0.19
4.00 -19.00 -12.00 0.19
5.00 -19.03 -12.00 0.19
5.00 -19.06 -12.00 0.19
5.00 -19.09 -12.00 0.19
5.00 -19.12 -12.00 0.19
5.00 -19.16 -12.00 0.19
5.00 -19.19 -12.00 0.19
6.00 -19.23 -12.00 0.19
4.00 -19.26 -12.00 0.19
5.00 -19.30 -12.00 0.19
5.00 -19.33 -12.00 0.19
5.00 -19.37 -12.00 0.19
5.00 -19.41 -12.00 0.19
5.00 -19.45 -12.00 0.19
5.00 -19.49 -12.00 0.19
4.00 -19.52 -12.00 0.19
7.00 -19.55 -12.00 0.19
4.00 -19.57 -12.00 0.19
5.00 -19.59 -12.00 0.19
5.00 -19.62 -12.00 0.19
5.00 -19.63 -12.00 0.19
5.00 -19.65 -12.00 0.19
5.00 -19.66 -12.00 0.19
4.00 -19.66 -12.00 0.19
5.00 -19.68 -12.00 0.19
6.00 -19.69 -12.00 0.19
5.00 -19.70 -12.00 0.19
5.00 -19.72 -12.00 0.19
5.00 -19.73 -12.00 0.19
5.00 -19.75 -12.00 0.19
5.00 -19.77 -12.00 0.19
5.00 -19.79 -12.00 0.19
5.00 -19.81 -12.00 0.19
5.00 -19.83 -12.00 0.19
5.00 -19.85 -12.00 0.19
5.00 -19.87 -12.00 0.19
5.00 -19.89 -12.00 0.19
5.00 -19.91 -12.00 0.19
5.00 -19.92 -12.00 0.19
5.00 -19.94 -12.00 0.19
5.00 -19.95 -12.00 0.19
4.00 -19.96 -12.00 0.19
6.00 -19.96 -12.00 0.19
5.00 -19.97 -12.00 0.19
5.00 -19.97 -12.00 0.19
5.00 -19.98 -12.00 0.19
5.00 -19.98 -12.00 0.19
4.00 -19.98 -12.00 0.19
6.00 -19.99 -12.00 0.19
4.00 -19.99 -12.00 0.19
6.00 -20.00 -12.00 0.19
5.00 -20.02 -12.00 0.19
5.00 -20.03 -12.00 0.19
5.00 -20.05 -12.00 0.19
5.00 -20.06 -12.00 0.19
5.00 -20.08 -12.00 0.19
5.00 -20.11 -12.00 0.19
4.00 -20.13 -12.00 0.19
5.00 -20.15 -12.00 0.19
6.00 -20.18 -12.00 0.19
5.00 -20.21 -12.00 0.19
5.00 -20.23 -12.00 0.19
5.00 -20.24 -12.00 0.19
5.00 -20.27 -12.00 0.19
4.00 -20.28 -12.00 0.19
5.00 -20.29 -12.00 0.19
5.00 -20.31 -12.00 0.19
6.00 -20.31 -12.00 0.19
5.00 -20.32 -12.00 0.19
5.00 -20.33 -12.00 0.19
5.00 -20.33 -12.00 0.19
4.00 -20.34 -12.00 0.19
6.00 -20.35 -12.00 0.19
4.00 -20.35 -12.00 0.19
5.00 -20.36 -12.00 0.19
5.00 -20.37 -12.00 0.19
6.00 -20.37 -12.00 0.19
5.00 -20.39 -12.00 0.19
5.00 -20.40 -12.00 0.19
5.00 -20.41 -12.00 0.19
5.00 -20.42 -12.00 0.19
4.00 -20.43 -11.95 0.19
5.00 -20.44 -12.00 0.19
5.00 -20.45 -12.00 0.19
6.00 -20.46 -12.00 0.19
5.00 -20.48 -11.80 0.19
5.00 -20.49 -11.67 0.19
5.00 -20.51 -11.55 0.19
4.00 -20.52 -11.11 0.19
5.00 -20.54 -11.30 0.19
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--------------------
it seems that even with a target of 12° it's only when the angle goes beyond 32.65 that it changes the target_angle (same thing on the minus side of things). A target_angle of 12 means full speed ! So it can't stand.
It's my first time with JJRobots. I'm really impressed by the mature design of it. I'm sure I have missed something in the setup ....
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05-02-2017, 10:47 AM
Post: #9
Smile RE: New build won't stand
OK, now it works.Big Grin

The mistake I made is that the construction of my robot was not really balanced :
I have a lipo, I've found no good place for it so I've attached it near the motors in front of the robot. It was not working.
Now I've changed the place of the lipo and the construction is balanced and now it works.

I can confirm that I can't manage to connect my nexus 5 to the robot but it works with a archos phone. The curious thing is that I'm using my nexus with osc protocol in many applications and it's perfectly working. I will try with a router ....
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