BlueFarAway
@ May 22, 2010
- Actuators / output devices: 2 geared motors
- Control method: non-autonomous so far
- CPU: Arduino Duemilanove (328)
- Power source: 7.2V NiMH for Logic & 4.5V for motors
- Sensors / input devices: home made sensor WIP
- Target environment: indoor
Hi, BlueFarAway is my first attempt of building a robot. It´s like a playground where I can experiment. I got an Arduino for another purpose and wondered how far could I go by using recycled parts, and that became the main objective of this robot. Build it as cheap as possible by using recycled things.
So BlueFarAway has 2 geared motors and wheels borrowed from toys, a chassis made of a CD case box, a ball caster made with mini skate wheels, battery holders from other toys and a dual H-Bridge made of old electronic components. Even the rechargeable batteries are old!!
Even though it works and it´s pretty fast (faster than I´d like her to be). I´m building (and struggling with) line sensors with old TIL 99 phototransistors and “who knows” photodiodes. But´s part of the fun J. If testing succeeds I´ll be adding homemade IR sensors for obstacles so it becomes autonomous.
Here are some Photos:
Buttom View
If you happen to be an ant, this would be yours perpective:
Kind regards,
Rodrigo.
@ Fri, 2010-10-08 15:05
your H-Bridge
Nice begining platform, any chance you can post your schematic for the dual H-Bridge?
I appreciate your time.
@ Fri, 2010-10-08 16:10
Sure, here it goes
As you can see I haven´t fully embraced CAD :)
DirL and Dir R are complementary. I use a transistor to ensure they don´t get the same value at any time (what means a PWM shortcut between Vmm and ground...)
Hope it helps
@ Wed, 2010-10-06 06:18
Very cool and speedy little
Very cool and speedy little bot! I like that you made use of so many recycled things, and that you are making your own sensors.
Good luck!