Electronic Circuits Projects Diagrams Free

Electronic Circuits Projects Diagrams Free - Robotics Chat http://www.electro-tech-online.com/ Specific to discussions about robots and the making of. en Fri, 20 Nov 2009 21:23:23 GMT vBulletin 60 http://static.electro-tech-online.com/images/misc/rss.jpg Electronic Circuits Projects Diagrams Free - Robotics Chat http://www.electro-tech-online.com/ cheap electronic compass http://www.electro-tech-online.com/robotics-chat/100241-cheap-electronic-compass.html Thu, 19 Nov 2009 18:57:23 GMT

hi everyone

please see the image below in reference to a cheap compass. I'm not an electronic engineer so pls bear in mind :-)

the idea is to create cheapest form of electronic compass. it will be in-accurate by about 15degrees, slower than gyro ones, and need to be held flat like a compass. Whats wanted is cheap + general direction according to 8 co-ordinates.

just like with normal compass, its bar rotates on a pin. the bar is fixed to a black card (thin, light, black about 200gr/gsm card). A slot in the card to allow IR light to pass through for the photo interuptors. depending on the cards rotated position, 1 or 2 photo interupters would be postive (passing IR light through the slot. With each photo interupter connected to an MCU pin each, could calculate the position......

right? ]]> Robotics Chat oem_odm http://www.electro-tech-online.com/robotics-chat/100241-cheap-electronic-compass.html IRF511 Fet problem contest http://www.electro-tech-online.com/robotics-chat/100075-irf511-fet-problem-contest.html Sun, 15 Nov 2009 17:29:23 GMT I am having a contest in a week and i am making the final version of my line following robot (my prototype worked out well) ... BUT... I am... I am having a contest in a week and i am making the final version of my line following robot (my prototype worked out well) ...

BUT...

I am getting back to the joys of debugging obvious problems and then running crazy.

I need to command the robot with two Fet IRF511, but for some reason that i dont know, Dosnt worksss ... it was working in the prototype tough............

I have a schematic just here ;

Help! (whats wrong????)

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]]> Robotics Chat breadboardguy http://www.electro-tech-online.com/robotics-chat/100075-irf511-fet-problem-contest.html motor torque question http://www.electro-tech-online.com/robotics-chat/100020-motor-torque-question.html Sat, 14 Nov 2009 00:57:44 GMT hello there this question is about motor torque. please see the attached image and note the following. A shaft is loaded with a weight of 5kg.... hello there

this question is about motor torque. please see the attached image and note the following.

A shaft is loaded with a weight of 5kg. One end of the shaft is mounted on a bearing, its other end connected directly to a motor. The motor is specified as having a torque of 1Kgf.cm

But what does that actually mean. Does it mean it can only turn a shaft loaded with 1KG?

I would like to understand better the relationship between 1Kgf.cm and what weight it can actuallly turn on a shaft.

many thanks :-)

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]]> Robotics Chat oem_odm http://www.electro-tech-online.com/robotics-chat/100020-motor-torque-question.html Motor Question http://www.electro-tech-online.com/robotics-chat/99792-motor-question.html Sun, 08 Nov 2009 19:49:32 GMT Hello forum , i have a motor , i would like to ask you please , they wrote in the datasheet: Output Signal, Common Mode: 155microA with an AGC... Hello forum ,
i have a motor , i would like to ask you please , they wrote in the datasheet:
Output Signal, Common Mode: 155microA with an AGC current of 30mA.
Could please explain for me the term AGC (automatic Generation Control), is this mean i should use an special electronic component? and what kind ?
Have a nice day,
Thanks in advance ]]> Robotics Chat anita1984 http://www.electro-tech-online.com/robotics-chat/99792-motor-question.html Vision Sensors. http://www.electro-tech-online.com/robotics-chat/99693-vision-sensors.html Thu, 05 Nov 2009 20:42:46 GMT Dear Friends, Is there any way we can have a wireless vision sensor that can be integrated to build a stereo camera system. Please suggest some... Dear Friends,

Is there any way we can have a wireless vision sensor that can be integrated to build a stereo camera system. Please suggest some ideas.

Thanks
sreekanth ]]> Robotics Chat bogasrikanth http://www.electro-tech-online.com/robotics-chat/99693-vision-sensors.html small motor http://www.electro-tech-online.com/robotics-chat/99506-small-motor.html Mon, 02 Nov 2009 06:37:10 GMT hi,

i've scrapped this motor out of a floppy disk drive. it has four wires; yellow, white, red and blue.
i just don't know which wire is which.
anyone know of this? ]]> Robotics Chat t.man http://www.electro-tech-online.com/robotics-chat/99506-small-motor.html Help with ASK modules... http://www.electro-tech-online.com/robotics-chat/99307-help-ask-modules.html Tue, 27 Oct 2009 17:12:40 GMT help me plz... i have purchased ASK modules..... which are 433mhz. i have tried to make the RF remotes 4 bit one with the circuit given in the bot... help me plz...
i have purchased ASK modules..... which are 433mhz.
i have tried to make the RF remotes 4 bit one with the circuit given in the bot school.
i have tried to correct the circuit many times but no result..
plz any one tell me
!)is the circuit given is correct or not?
2)if in case the ASK module is spoiled how to test it whether it is working or not?

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]]> Robotics Chat srikapardhi http://www.electro-tech-online.com/robotics-chat/99307-help-ask-modules.html Programmable winch? http://www.electro-tech-online.com/robotics-chat/99285-programmable-winch.html Tue, 27 Oct 2009 09:02:50 GMT G'day guys!

I'm wondering if anyone has any experience related to or ideas regarding making a small programmable winch?

I'm looking to set up a rig that will lower to a set height when I press a button and return home when I repress it.

My friend suggested a servo motor due to the ability to program the amount of rotation however I haven't been able to find a continuous rotation servo with adequate torque (2.5NM - 5NM).

I've also looked at reversible motors however I'm unsure how one would set up a circuit using a limit switch to both lower it and bring it home.

Any help would be much appreciated!

Owen ]]> Robotics Chat OwenLinton http://www.electro-tech-online.com/robotics-chat/99285-programmable-winch.html confused with phototransistor and TSOP .... help me plz! http://www.electro-tech-online.com/robotics-chat/99206-confused-phototransistor-tsop-help-me-plz.html Sun, 25 Oct 2009 09:11:53 GMT hi......! i am a beginner plz help me to get rid of my confusion. i wanted to create a line follower obstacle detection and photo phobe and etc..... hi......!
i am a beginner plz help me to get rid of my confusion.
i wanted to create a line follower obstacle detection and photo phobe and etc..
i generally know about LDR and photo diode but while searching for line follower circuits read about many circuits and got confused about what i know before also.
1)what is photo transistor?is it not the photo diode?what is the difference between them?does it also have rx and tx pair or only a single one?

2)what is TSOP 1738 what for it used for ?is it not same as photo diode?
how is it different from photo diode?does it also have emitter and receiver modules?are there different varieties of tsop available?

please explain me case wise.
thankq.. ]]> Robotics Chat srikapardhi http://www.electro-tech-online.com/robotics-chat/99206-confused-phototransistor-tsop-help-me-plz.html H-bridge help http://www.electro-tech-online.com/robotics-chat/99101-h-bridge-help.html Fri, 23 Oct 2009 01:49:11 GMT I am trying to build a robot and i have been having trouble getting a working h-bridge for my motors and i was wondering if anyone could help me work... I am trying to build a robot and i have been having trouble getting a working h-bridge for my motors and i was wondering if anyone could help me work this out.

i have 2 motors to drive with either a pic or a c-stamp pwm. the motors are HG16-120-AA Operating Voltage 5.4v-6.6v Rated Current 350ma Stall Current 1600ma.

i have some irf530 and irf9630 power mosfets that i think will work for those motors but i am not sure as i have yet to have any luck getting it to work right.

i also have some irl510 mostfets if they would help?

i plan on driving the motors off 4 AA battery's

any help would be greatly appreciated ]]> Robotics Chat Forgey http://www.electro-tech-online.com/robotics-chat/99101-h-bridge-help.html IR Reciever/transmitter noob help http://www.electro-tech-online.com/robotics-chat/99077-ir-reciever-transmitter-noob-help.html Thu, 22 Oct 2009 08:52:35 GMT Hi,
I've built a IR transmitter using the following wiring diagram: http://multyremotes.com/wireless-dc-motor-control.htm for my robot.
Now i'm looking for a reciever, anyone got a wiring diagram?
And how long will it be able to reach? distance between transmitter & reciever?

Thanks! ]]> Robotics Chat olof102 http://www.electro-tech-online.com/robotics-chat/99077-ir-reciever-transmitter-noob-help.html