Basic 74AC240 Bicore

Here he is, after three hours of soldering. His brain is the exact one from the "Junkbots, Bugbots, and Bots on Wheels" book. He's still a work in progress, and I still want to add some indicator LEDs and some solar cells so he can charge a battery. Also, I'm really new to this stuff, and I would appreciate any tips and/or constructive criticism and/or ideas.  His body was from a kit called a brush bot that I modded a little with a dremel tool.

A good view of his brain:

An even better view of his brain:

reacts to light

  • Actuators / output devices: motor spinning unbalanced weight
  • CPU: none BEAM
  • Operating system: none
  • Power source: 3 AA Batteries, 9 Volt Battery
  • Programming language: none
  • Sensors / input devices: infra red photodiodes
  • Target environment: indoors on a hard surface

This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/basic-74ac240-bicore

Specs of this robot:

- 74AC240 Buffer

- 2 980 nm Infra Red Light Photodiodes

- 2 “103” ceramic capacitors

-1 vibration motor

-19v battery clip

-1 DPDT switch

Perhaps a little more detail about the bot

Not everyone has the “Junkbots, Bugbots, and Bots on Wheels” book, maybe tell us what it does.

I also am interested where you got a 19v battery clip. Must be some new chinese battery technology lol just kidding

Love the eyes. Would love to see a video, too, of course :slight_smile:

cheers!

cool bot, btw, what does it do? you should edit it with a lot of information, and that googly eyes, such a nice addition :smiley:

WELCOME TO LMR!

the 19v battery clip was a

the 19v battery clip was a typo; i meant to type "one 9v battery clip."

the exact circuit diagram from the book is below:

http://www.google.com/imgres?hl=en&gbv=2&biw=800&bih=461&tbm=isch&tbnid=LPZ3yedCi1A2LM:&imgrefurl=http://haroldsbeambugs.solarbotics.net/&docid=eP5LnNZeKz_PAM&imgurl=http://haroldsbeambugs.solarbotics.net/BicoreHead.jpg&w=616&h=1125&ei=An1GT6G_H4aUiQKx4u3bDQ&zoom=1

He has a vibration motor for

He has a vibration motor for locomotion.  He is meant to run after light, but since I don’t have a nine volt battery, I haven’t really gotten him up and running on anything except the breadboard.

the thing about the googly

the thing about the googly eyes is this: he was originally something called a brush bot.  it’s a kit that lets you make an extremely simple robot that, at its heart, is a motor, switch and batteries.  he vibrates on a brush, and as the bristles vibrate with the motor, he moves.  He had googly eyes that came with him.  Anyway, he was on my bench and I was looking for a motor for the bicore I was making.  So some hot glue and solder later, and here he is now.

Answering your first question, he follows light.

P.S. have you ever seen

P.S. have you ever seen those “hex bugs?” he moves really similarly to the smallest ones that come in the plastic tubes @ RadioShack, Wal-Mart, etc.

cheers!

aye, the hexbug micro, i know what kind of robot that is, it’s a vibrobot or bristlebot, cool!

I don’t get it. How do you

I don’t get it. How do you make a single motor bristlebot follow light?

Well, my hope isn’t that he

Well, my hope isn’t that he will necessarily follow the light, but that he will at least react to it.  I don’t know what he’s going to do because I didn’t breadboard him with this specific vibration motor.  I think it is a law of the universe in that nothing ever works right the first time.

Ah, OK. So it will react to

Ah, OK. So it will react to the light and move, but not follow. That makes more sense!

 

hmmm…I have a 7805. I

hmmm…

I have a 7805.  I think that might work.