Noise Responsive Bunny

This is my first arduino project i hope you enjoy it and be sure to leave comments so i can improve for my next project.

I will show you how i made a bunny which can move his ears to a sertain position depending from the amount of sound the microphone registers.

Step 1: Making the Pcb for the Microphone

first we make a pcb so youre arduino can register the soundinput we will use for moving the ears.

in the documents you can find the material and schematics i used to create my microphone pcb.

Step 2: Making the Pcb for the Servo

here you can find the blueprint i made for my pcb-shield to control the servo i use to move the ears.

i used following material:

- p-mosfet

- 1led (any collor will do)

-2 resisters ( 1) 1.6 kilo Ohm for the R2 2) 220 Ohm for the R1)

! notice you wil need to solder a wire from the ground pin (vccl) to the groundpin of the P-mosfet. !

Step 3:

Step 4: Let's Make a Case

Now you can start cutting youre case, I cutted my case with a lasercutter. Here are the blueprints i made and used.

You wil need to measure where you wanna place the ears and drill a hole in each side.

then you can use a rod on witch you mount the two ears with in the middle a round servo head which you keep in place with screws and bolds.

after this you bend a large paperclip which we gonne use as a rod to push the servo head which in turn pushes the ears up.

Step 5: Now We Can Place the Pcb's and Hardware Inside

I used this code on my arduino Uno, like i said i'm new to this so i apologize in advance if there are more effective way's to write this.

Place youre arduino which has te pcb-Shield on top of it about 1cm away of the front side of the case. I keep it in place with velcro.

When this is done you can place the microphone in the pre-cut hole in the front and glue it in its place with a hot glue gun (be sure the micro is surrounded by glue this will stop the servo sound interfering with the microphone.)

Now you can connect the microphone to youre microphone pcb and connect the microphone pcb to the arduino.

After this you can install the servo in place and connect the paperclip with the servo, and connect the servo with the servo pcb.

And finally you connect the two battery holders (which i also connected with velcro in the back) to a switch so you can power it on and of. Then you connect the two wires to a power piece to power youre arduino and the other two wires directly on the servo pcb.

Step 6: Decoration

Youve reached the end of my first tutorial i hope you enjoyed it!!!

Now al what is left is to decorate youre box !!