Adding more sensors to KHR-2HV

[source]

Hi everyone


I bought my KHR-2HV just to weeks ago, and installed 2 KRG-3 and RAS-2 to my robot.
Now I'm intersted in give to my robot some autonomy. So I was thinking if its possible to add more sensors, like infrared and ultrasonic.

Did someone tried before? where to start?

As the board only have 3 input ports and I had used all with the 2 KRG-3 and RAS-2, how can I extend the board to manage more sensors?

(sorry about my English)

[Robo1]

Hi this is were the board sucks.

there is not much you can do apart from designing your self a new board as a master and having the RCB as the slave.

At the moment I'm designing a new board to replace RCB as H2H is rubbish and the board isn't that good ever.

bren

[heke]

You can use the start button as an digital input. It will start a move which ever you like.

Or remove the RAS and replace it with another analog sensor. Or make a digital->analog converter and connect it to the analog input. Maybe one or two digital switches will detect if the robot has fallen down and then make the robot get up (just like with RAS). Connect other switches in other channels of the digital->analog convert and read those bits and make decisions to start other moves.

[shsan]

Well In fact, I have been thinking about another way.
You could develop a small board with a multiplexer (for example an 8 to 1) and use extra servo Channel (in 0V or 5V mode) to drive which ADC input to use.
You will have to jungle between the thing and it would almost probably forbid a mixing on the input that you use.

The ideal candidate would be the Accelerometer since it's rarely used for mixing.
When needed you can just enable it.

Something like that

ACCEL RAS1/2
|
I0---[-------]
I1---|M |----------RCB3 ADC3
I2---|u |
I3---|l |-----------SEL0--SERVO_SIGNAL
I4---|t |
I5---|i |-----------SEL1--SERVO_SIGNAL
I6---|plexer|
I7---[-------]-----------SEL2--SERVO_SIGNAL


In = analog input
Seln = 0 or 5V signal to choose the In

Even on a KHR1HV you still have 5 servos available, so using 3 of them to drive the multiplexer is possible.
You might want to add some protection to avoid getting more than 5V in the SELn

Hope this make sense.

[AI-Bot]

HI...

You might want to use Motorola DSP board.
It has 32 servos.... also 4-8 analog... for sensors.
(depending on the board you get)
They also have usb or serial port version.
They also have other board for different prices...

But the good board is about $250Can....

I use Motorola DSP board with RCB3J board and with Cyris CPU....
for my robot..... you can almost programing anything with it.


If you are interested just PM me....I don:t have the link off hand.

[ryann2k1]

HI...

You might want to use Motorola DSP board.
It has 32 servos.... also 4-8 analog... for sensors.
(depending on the board you get)
They also have usb or serial port version.
They also have other board for different prices...

But the good board is about $250Can....

I use Motorola DSP board with RCB3J board and with Cyris CPU....
for my robot..... you can almost programing anything with it.


If you are interested just PM me....I don:t have the link off hand.

Hi AI-Bot,
I have been looking for the board as you are using, but nothing directly is similar with your specifications. Would you mind to show the picture of your configuration and the exact name of the board?
Thank you .

Cheers

ryann2k1