Arduino tamiya twin motor gear power supply and stuff
February 18, 2012
Hello there, I am building a simple Arduino tank but the problem is that after running it for 20? seconds it starts to run slower and slower. Then after turning it off, and on it does not run anymore. After letting it stay off for almost 5 minutes, it runs really slow. Looks like the 9v battery can't handle it?
So let's explain what I have:
Arduino UNO, breadboard, . The Arduino is using the USB connection to power up, The two DC motors use one 9V battery.
On the website where I bought the 754, I read that it gives 2A, is that for each output or both together? because each DC motor needs at least 2A. And is the sn754410ne anything good? I have seen a few using this, also can be found on youtube, running to motors.
I want to use a better battery pack, for example a LIPO battery pack, and I don't use any capacitors right now, do I need to use it if I for example use 2x 9V battery or 2x LIPO 7,2V? The motors run each on 3V - 6V.
If you guys know anything better for powering this baby up, please tell me. I want to use the tank for atleast half hour or more?
1 to pin 9 on Arduino board
2 to pin 3 on Arduino board
3 to motor1
4 to the gnd rail on the breadboard
5 to the gnd rail on the breadboard
6 to motor1
7 to pin 4 Arduino
8 to power (+) rail.
9 to pin 10 Arduino
10 to pin 5 Arduino
11 to motor2
12 to GND rail
13 to GND rail
14 to motor2
15 to pin 6 Arduino
16 to power (+) rail
Power (+) rail on the breadboard has 9V battery connected, gnd on the breadboard has 9V gnd, and arduino gnd connected.
Any other advice is also appreciated, am just a newbie at this.