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simple but getting worse for me(roborace project)


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robotics_mait

Sun Feb 07 2010, 08:30AM

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hi guyz ..i am trying to make a 4-wheeled robot for the roborace project..i have a pcb from mitbots which has 4 switches(for forward,backward,left,right directions) and i have completed my mechanical portion for the robot...there are a total of 6 pins-- 2 for battery terminals and 4 for output from switches named pin1,pin2,pin3,pin4...i am posting the circuit... i am using li-ion batteries for running dc 100rpm motors..the problem is that when i press a button ,say forward , i get output as 1 1 1 1 instead of getting 1 0 0 1 ...what shall i do??is there any other circuit that is better than it???what is the problem going with it....plz post immediately

Ajay Bhargav

Sun Feb 07 2010, 10:01AM

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i think you should check your connections. coz by just having that block diagram i cannot tell you anything. you should have posted the circuit how switches are connected.

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robotics_mait

Sun Feb 07 2010, 10:01PM

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i have bought the remote from mitbots (an organization) and it has 4 switches(that move in one direction only)...i am posting the photo of that also...the remote pcb has 4 switches --for up,down,left,right respectively ...there is a connector connecting this remote pcb..this connector has a total of 6 pins of which 2 are of power supply and 4 are for the outputs named--pin1,pin2,pin3,pin4...when an up button is pressed then 1 0 0 1 logic is the output from these pins(pin1--1 , pin2 -- 0, pin3--0, pin4--1)...the problem i am facing is stated in my previous post....i have used only remote pcb and battery and robot motors directly connected to the output pins from remote pcb...i hope you understand....

ExperimenterUK

Mon Feb 08 2010, 11:32AM

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Do you have a link to the item you bought or a data sheet ?.
I tried to look it up at "mitbots" but you can't see anything until you sign up.

I tried signing up but my form was not accepted

For an organization promoting "robotics for the masses"
they seem rather secretive.

Ajay Bhargav

Tue Feb 09 2010, 11:25AM

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adding to that.. its better not to buy such secretive stuff

when you can make it yourself.

and in picture, i can see more wires creating the actual glue logic to run the motors. and remote is having that answers maybe.

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