LCDK Interface to Robot

dspRookie

Other Parts Discussed in Thread: OMAPL138

Is there a recommended practice for interfacing an LCDK to a robot? That is, taking in multiple low-frequency analog inputs, and providing analog/discrete and PWM outputs. I know that the LCDK can't do it alone, so what is the best way to interface to, say, a Beaglebone Black?

over 11 years ago

0 Titusrathinaraj Stalin over 11 years ago

TI__Guru** 116100 points

Hi,

I have found the following link regarding robot.

http://beagleboard.org/project/FirstRobot/

In my understanding, AM335x more suitable for robot designs unless If you are robot required some image/audio processing.

AM335x is cortex A8 processor with 1GHz CPU speed whereas OMAPL138 is ARM9 + DSP core with 456 MHz CPU speed.

If you want to know more about robots, Please go to beagle board website & search, there you can find lot of robots projects supporting with lot of boards (beagle bone, BBB etc.,)

0 dspRookie over 11 years ago in reply to Titusrathinaraj Stalin

Intellectual 430 points

Titus, thank you for your response. You guessed correctly: I am doing some image processing first, then controlling a robot. So I use the LCDK for the DSP, but I need to interface to a BBB for the control. I'm really looking for a best practice to do that interface. Do you know of one?

PS: sorry it took me so long to respond. I didn't realize that my e-mail address was not in the system.

0 Titusrathinaraj Stalin over 11 years ago in reply to dspRookie

TI__Guru** 116100 points

Hi,

We have face detect demo code for C6748 LCDK.

http://processors.wiki.ti.com/index.php/BIOS_C6SDK_2.0_User_Guide#.C2.A0_How_to_Flash_Face_detect_demo_on_EVMC6748

http://processors.wiki.ti.com/index.php/L138/C6748_Development_Kit_%28LCDK%29#Face_Detection_Demonstartion

0 dspRookie over 11 years ago in reply to Titusrathinaraj Stalin

Intellectual 430 points

Titus, thank you again for your response. So I use the face detection software that you list. If I identify the image as Face A, I want to turn the robot to the left. If it is Face B, I go right. The LCDK cannot command the robot by itself. Is there a good way to get control requirements to a BBB, so that the BBB can actually command the robot turn left?

0 Titusrathinaraj Stalin over 11 years ago in reply to dspRookie

TI__Guru** 116100 points

Hi,

Please understand and modify the "face detect code" as per your requirement (image comparison).

I hope that face detect code has full of OpenCV libraries which I don't know.

In my opinion, You have to choose one peripheral (SPI or I2C etc) to communicate with BBB,

0 dspRookie over 11 years ago in reply to Titusrathinaraj Stalin

Intellectual 430 points

Titus, thank you. I will pursue the I2C or SPI comm interface to a BBB on connector J15 of the LCDK..

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LCDK Interface to Robot