Animatronic Mouths

Current Part:

PIC 18F452
PICkit 2
7805 +5v Regulator
10kΩ Resistor
47uF Capacitor
20 MHz Crystal
Jumper Wire
16x2 LCD Display
Wire Wrap
Wire Wrap Tool
4x 0-80 Nuts and 3/4" Bolts
1/4" Acrylic Plastic or 1/4" MDF
Power Drill
E-Poxy Glue

Parts List Details
           The parts list for this tutorial is very short, and that should be welcome because it means less time spent assembling electronics and more time building!

HS-485HB Servo Motor
           Any standard sized servo will do the trick here, I chose the HS-485HB because it was just laying around. The torque it has is way more than is necessary, so it works perfectly. So if you're trying to do things on a low budget opt for the HS-322 as it's half the price.

16x2 LCD Display
           The second type of mouth will use a 16x2 LCD display. There are many different types of display colors: Red on Black, White on Green, Blue on Yellow and etc. I'm using a standard Green/White color combination. My display actually looks a little yellowish because I hooked up +18v to the backlight led on accident. Don't do that, it burns the LEDs out!

PIC 18F452
           Since the PIC 18F452 was already used in the two previous tutorials: animatronic eyebrows and animatronic eyes we'll continue using it as the brains of the project controlling the servo movements with pre-programmed steps to follow.

20 MHz Crystal
           Same as above, the 20 MHz was used in the previous animatronics how to tutorials, so we'll keep with it. A wide range of crystal speeds could be used, I just landed on 20 MHz because it is what I had laying around.

7805 +5v Regulator
           The power demand is slowly growing with so many servos being used. The mouth servo alone could definitely be powered from a single 7805 but the 6 other servos for the eyes and eyebrows should use their own regualted +5v, so this design will opt to use two identical power regulation circuits for safety.

Jumper Wire & Breadboard
           Because of the previous progress made, very little extra wiring will be necessary, however we'll use the same small styled breadboard and jumper wires. The LCD based mouth design will use a similar small breadboard with jumper wire and wire wrap to the LCD.