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Internal Electronics - Part 1

B9 Robot Internal Electronics - Part 1

I've had several requests to explain more about the internal electronics I've used inside my B9. I'll try to add additional information on this page. As I create each schematic, I'll add them here. I am drawing the schematics up "after-the-fact" as I was making this all up as I went along, and everything was hand drawn. There are several free schematic programs out there that you can use to create your schematics. One of them is called PCBWeb. It's a free CAD application for designing and manufacturing electronics hardware.



Here's the Infrared Interface Board schematic. I believe it's complete. This board takes the signal from the IR Remote Control (via the IR Repeater board) and decodes it into 14 different I/O lines. The file is in a PDF format. You have to click on image to see the whole schematic. More info on the entire Remote control system Interface is on my Remote Controlpage.

Here is the entire soil sampler circuit. It shows the up and down switches as well as the interface to the H-Bridge which controls the shaft extend motor. The file is in a PDF format. You have to click on image to see the whole schematic. If anyone is interested in the Basic Stamp code, I could share that as well

Oopic II Micro controller - The OOPic II is an Object Oriented Programmable Integrated Circuit. Created by Savage Innovations, this PIC microcontroller comes with an IDE (Integrated Development Environment) software that supports programming in syntaxes based on the BASIC, Java and C programming languages. The Oopic II is a forerunner to the Arduino and one of the earlier entries in the affordable hobbyist micro-controller arena.

Basic Stamp Microcontroller - This is what I am using to control my soil sampler. It is programmable in BASIC language and has 8 I/O ports. Very capable for controlling a single process like my sol sampler. It has limited capabilities when it comes to PWM, but it manages to do the job.

Dual PWM Driver for OOPicâ„¢ by Magnevation - I use both sides of the dual motor controller in my B9. One side controlls the torso rotation motor and the other controlls the bubble lift motor.

This is the Infrared Interface chip I'm using. I purchased it from Reynolds Electronics. They have a great "Remote Control Store" with all kinds of IR interface components.

The chip gives me 14 separate remotely controllable addresses. I can use the remote control to turn on and off each one independently. I will have control over 14 different features on my robot. Already, I have 4 addresses taken up by the Chest Light controller and 1 used to active the Soil Sampler. Others will include the Torso movement routines and maybe the brain and radar movement.

The circuit board shown here is my IR repeater board. I have two internal items that need to be controlled by remotes. The car stereo I am using for my voice/internal sound effects as well as my IR interface board. I need to be able to control both of these from outside. In order to have the IR signals penetrate the torso, I need to have a remote IR detector and a corresponding internal IR repeater. The board should do the trick. It is sold by Ramsey Electronics a very neat local manufacturer of Hobby electronics kits. I also use one of these IR repeaters to control my audio and video equipment in my living room. I can have the doors closed on the armoire entertainment center and still control the equipment inside.

Microphone preamp. I want to have the ability to hook up a microphone so that I can "speak" through the robot. I'll need this microphone preamp in line with the microphone to boost the signal up to a useable level that I can then feed into the audio amplifier. I hope this will come in useful on Halloween, when I can talk to the kiddies. The kit is from Canakit and it is nice and clean looking and simple. Another pre-amp kit is available on Amazon made by Velleman, an excellent electronics kit company.

An excellent book for the beginner robot builder is available from Amazon. They are into their second edition. Clicking on the book will take you to the Amazon web site description of the book..