Tamiya GearBox

could anyone give me links to examples to use the tamiya gearbox to move foward and backward?

Which tamiya gearbox?

this one:

Are you using a motor driver board or shield of any kind? What hardware are you using to control the motors?

no im using my own PCB design its a university project, im usin LM317T chips just need an outline to understand the programming method. because the DC-Motor example is helpful but i dont understand some of it and i can only use it to run one wheel at a time.

I got that gear box. The motor need 3 V max at 1 A max ( stall ).

Question : Why are you using a LM317T ← a voltage regulator ?

I got the feeling you simply : a. Bad wiring job b. Bad design c. Bad coding.

To control this type of gear box, you use : a. H bridge rated for 2 A b. relays rated for 2 A.

By wiring properly, even an DIY PCB, you can make it work. But, you MUST first breadboard and test your circuit and THAN you make the PCB board version.

like this?
line tracing car
http://www.arakin.dyndns.org/ec_lt2.php
http://www.arakin.dyndns.org/ec_lt3.php
http://www.arakin.dyndns.org/ec_lt4.php

It’s only one example.
There are many ways to drive the gear box.

could anyone give me links to examples to use the tamiya gearbox to move foward and backward?

because the DC-Motor example is helpful but i dont understand some of it and i can only use it to run one wheel at a time.

I do not know what you want to do.
Do you want to drive two motors with 1 motor driver?

@Nabe_RMC

Interesting pictures… to bad I can not read it… not english or french…

I see the motors use 2 AA battery… I will not use AA’s. I will use C battery instead. The raison is in a normal operation, those motors consummed about 250 mA to 700 mA. ← I will test them…

In another word… Electric motors eats current for breakfast…

for translation I use Google Chrome.
Sometimes that translation is strange. :frowning:
But I am poor in English so It’s useful for me. :smiley:

I see the motors use 2 AA battery… I will not use AA’s. I will use C battery instead.

He changed to 3 AA batteries from 2.

Initially, had been to 3V battery side of the motor, are experiencing slow speed, we measured the voltage across the motor (the output voltage from the motor circuit IC). Was much smaller because the battery was a little weak, the battery voltage was 2.6V, the voltage across the motor is about 0.78V. It was noticed that the feeling I get from the characteristics of the motor IC TA7291P. Therefore, the battery has been changed to 4.5V on the motor side.

I recommend that you use Ni-MH or LiFe or LiPo etc.
Because the internal impedance of dry battery is very high.
So, voltage will drop down greatly when current flows.

In another word… Electric motors eats current for breakfast…

Yes, this motor for model craft eats over 200A ! :smiley: