I got a nice little remote relay from Team Delta (RCE200A) that activates the soil sampler by using one of the channels on my RC transmitter. This helps add to the realism that my bubble headed booby is actually in control of his own actions to the general public . No one has to push his buttons to activate it or to get the status report of his findings. It hooks up very simply to any open channel on the RC receiver. However, you don’t have to use a channel on your receiver, you can also use any RF transmitter to initiate the action. I used the “A” model I used chip PVN012 and left the dip switch setting at the -33% setting. The left side of the board is connected to the receiver. Please note that the board requires you to switch how the servo wires are oriented before soldering them to the board. The wires from the right side of the board is connected to the 2 wires that are used to initiate the soil sampler limit switch. I used the landing gear channel on my receiver so whenever I want to initiate the sampler, I just flip the landing gear switch on for a second and then turn it off . It completes the cycle and spells out the report automatically.
The lighting of the brain is accomplished from the electronic wizardry of Tom Wisnionski or Tom Wiz as most of us know him in the club. His brain uses LED’s throughout. It does a wonderful job. However, when it is in brain mode where the eyes are on constantly, you can see hot spots of the LED focal point. So you need to diffuse the light so it will disperse evenly. What works for incandescent bulbs doesn’t work as well for LED’s because of the intensity and focal point of the light.
Usually spraying a frosting material to the inside of a clear plastic strip is sufficient to diffuse the light but that wasn’t working very well with LED’s so I had to come up with a better way of doing things. Bob Griener remembered a technique he had heard from Nick “Elvis” Mulpango where he used hot glue globs to make fake rivets on his robot so we thought we might try that on the LED tips to see what happened. Boy it worked beautifully! It actually made the eyes look brighter!!! Bytheway, the Brain light LED’s are normally clear in color, I colored them using different colored sharpie pens for a little variety. The nice thing about that is if you don’t like the color, you can wipe it off, change it to something else or just leave it clear.
This is the technique we used for those who may want to do what I did. Get your standard glue gun and express out a dime size of hot glue and let it cool onto some wax paper or other surface that will be easy to lift off. Try to be as careful as possible to make a perfect a circle as possible. Then once you are ready express another small amount of hot glue and glue the dime size glob to the tip of the LED. Hold it for about 30 seconds. Make sure you keep it absolutely perpendicular to the brain eye plate. That’s It! Insert it centered into each eye cavity and the light should look evenly distributed.