Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: jakx12 on December 17, 2008, 02:45:39 PM

Title: Flex sensors
Post by: jakx12 on December 17, 2008, 02:45:39 PM

Hey can someone please post some information on flex sensors and using them with a basicx-24 micro controller. I am fairly new to robotics and am only 13 years old, so i would be glad for any help!

thanks

Title: Re: Flex sensors
Post by: HDL_CinC_Dragon on December 17, 2008, 04:40:01 PM

what kind of information are you looking for? And what do you need it for? Is there something in particular you are trying to do?

Title: Re: Flex sensors
Post by: SeagullOne on December 17, 2008, 11:52:35 PM

You might try these?

http://www.trossenrobotics.com/store/c/2670-Force-Sensors-Pressure-Touch-Sensors.aspx (http://www.trossenrobotics.com/store/c/2670-Force-Sensors-Pressure-Touch-Sensors.aspx)

Not sure if its what you need. Like dragon said, what is it you're trying to accomplish?

Title: Re: Flex sensors
Post by: jakx12 on December 18, 2008, 11:59:27 AM

For robotic arms etc. For example making a glove and a sleeve that are connected to a robotic arm. The arm will move accordingly to how the sleeve and the glove move.

Title: Re: Flex sensors
Post by: cooldog on December 18, 2008, 04:11:20 PM

some one on the forum did something similar for a hand

http://www.societyofrobots.com/robotforum/index.php?topic=1335.150

it's on the last page

Title: Re: Flex sensors
Post by: jakx12 on December 18, 2008, 04:31:13 PM

ok, but what type of servo if any should i use for the fingers?

Title: Re: Flex sensors
Post by: Admin on December 27, 2008, 10:34:33 AM

The resistive bending sensors . . . basically hook them up to op-amps to amplify the voltage, then send the result to the ADC of your microcontroller. You can treat them just like potentiometers, but with only a small resistance range. Also, expect to have problems with hysteresis (google it).

Quote

ok, but what type of servo if any should i use for the fingers?

the one with enough torque (subjective questions get subjective answers) :P