reference for compact robot

REFERENCE FOR COMPACT ROBOT 


Hi guyzz this is my next good one for you





now you can ask your questions about your project  at any time  , refer this page for your future reference

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How-to-build-the-one-motor-walker

Step 1

Items for the robot:
1 x Servo motor with servo horn
1 x Terminal block
1 x plastic gear ~2 inch
1 x plastic servo horn
1 x 2 feet of 8 to 10 gauge wire ( can use coat hanger wire or 10-gauge copper wire )
1 x short piece plastic tubing ( can use the isolation from the 8-10 gauge wire )
2 x AA or AAA battery holder

You could use the GM8 from solarbotics
http://www.solarbotics.com/products/gm8/
don't forget this
http://www.solarbotics.com/products/gmw/

Items for the BICORE"
2 x .22 µF monolithic capacitors
1 x 100K to 10M� resistor (we recommend 3.2M�)
1 x 74HCT240 integrated circuit (IC) 74AC240 will be better
1 x 20-pin DIP IC socket
1 x on/off toggle switch (smallest you can find)

the recommended tools for this project:
1 x safety glasses!!
1 x soldering iron
1 x glue gun
1 x wire strippers
1 x side cutter
1 x scissors, knife, x-acto, etc

Step 2

This is main mechanical part you will need to make the robot.

You can find this sort of gear in VCR. Search garage sale or ask familly and friends.
The DVD is already obsolete thank to the BluRay, imagine how obsolete is the VCR! :P

The gear in the picture is from a VCR.

Step 3

Glue the servo horn to the plastic gear. Be sure both hole are aligned.

You can use traditional servo horn for this project. It will work.

Step 4

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Step 5

Here you are building the pivot rod for the front gear.

Step 6The front gear

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Find a rigid plastic tubing that fit over the coat hanger. This tube is your pivot.

You can use the plastic that cover a electric wire. Maybe some 14/2 or 10/2 wire will do.

Step 7The gear assembly

Read step 8 to understand what does 14/2 mean.

This is a easy step. You insert the front gear into the metal rod.

Bend the rod so both gear touch. This is really important.

To secure the gear, look at the step 9. I use terminal block to hold it place.

Step 8The legs

You can use a coat hanger to make the legs. Find some 14 gauge cooper wire. It is normally call 14/2 or some will say 2/14
8 to 10 gauge will work too.

14 is the gauge ( the size, the diameter of the wire )

22 gauge is breadboard wire and gauge 0 is the size of your finger! 200 Amp

2 is the number of wire not counting the ground. You have a black and white wire.
The black wire is the "hot" that carry the 120V

14/3 is the same with one more wire. The wire is red. You normally use this wire when you have
a 3 way. Two switchs that control one light for example. 

Step 9The battery holder

We will hook are battery holder in serie to get higher voltage but with the same current.

Four battery of 1,5Volts will give 6V of power.

If you use rechargeable battery it will be 4,8Volts 

Step 10The circuit

This is a the hard part if you never made electronics.

Step 11

Glue the circuit on top of the servo.

Hook up the motor to the circuit like the circuit. 

Step 12

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Balancing Robot

This is a very simple robot that uses a simple switch as a sensor and stands on only two wheels with inverted pendulum mechanism.
When the robot is going to fall the motor starts and moves the robot to the direction it is going to fall, so the motor torque about the center of gravity that is higher than the motor makes the robot balanced.

Step 1Things you need

To make this robot you need following parts and tools:
small electric motor
some gears
(or a motor with gearbox)
a shaft
two wheels
some sheets of plastic to make bearings and the robot neck
two battery holders
4 AA batteries
one button cell
one SPDT (single pole double throw) switch with a metal lever
one toggle switch for the on/off switchs
one nail
some wire
soldering iron
some glue

Step 2Motor, Grears, Shaft, and Wheels

In this step you must make a system to moves the robot you can make it easily by adding some gears to a simple small motor, then connect it to a shaft and assemble it two wheels.
You can also use a motor and gearbox. 

Step 3Attach robot neck and head

Step 4Making the sensor

Solder a button cell to the SPDT switch lever.
Make the nail head hot on a flame and put it on the plastic sheet on the motor in a position that when the robot stands vertically the button cell touches the ground.
Then attach the switch to the robot with glue.

Step 5Connecting the switch

Solder a wire form positive pole of one of battery holders to the negative pole of the other battery holder and attach the toggle switch to it.
Then attach the other side of the switch to the motor.

Step 6Wiring

Now it is time to solder the robot wires.
Note that you must solder the wires in a way that robot moves to the direction that is going to fall.

Step 7Testing

The robot is now completed and it is time to test it.
Put 4 batteries into the battery holders and turn on the switch.
Try to change the position of the sensor to make the robot works better.
If the robot works inverted swap the red and blue wires on the sensor or on the battery holders.

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IR Remote Controlled Tracked Robot

Step 1Assembling the Double Gearbox

A basic hobby motor turning at 12,300 RPM is basically useless without a good gearbox. Just touching the shaft will stall the motor. I obtained a Tamiya double gearbox kit for under $10, which through a series of gears provided a ratio of 114.7:1 at 115RPM. There were a lot of small parts in this kit; and it looks a little intimidating; but the pictorial instructions were more than adequate. The drive train for a tracked vehicle would require left-hand and right-hand gear-head motors; so having both sides together in one package is a real convience (one gearbox to mount instead of two).

Step 22 Plate Set for drive Train Body

Step 3Wheel and Track Set

Step 4Underside of the Tank

Step 5Stand-offs for Upper Plate

Step 6PICAXE Microcontroller Circuit Board

Circuit Diagram

PICAXE Basic Code

Step 7Side View of Completed Robot

Step 8Top View

tep 9Presenting "Jim-Bob" Robot 2

thank to     jamesthequack

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