I was inspired by the cute Frankenbot papercraft, so I thought why not make it truly alive by giving it some blinking lights and sounds effect. Here is the plan:
– Connect 2 LEDs for the eyes (different colours of course) and only one eye can be on at a time
– Connect 3 LEDs to the chest so that it can run lights left and right
– Play some scary halloween music for the full effect.
So here goes my Frankenbot ready for Halloween.
Step 1: Create Your Cute Frankenbot
Use the following instructables to make your own Frankenbot. I used normal paper and stick it to thick cardboard like cereal boxes before cutting it out, so it is more sturdy.
Step 2: Cut Out the Eye Holes and Insert LEDs
Cut out the eye to make holes for LEDs, I use two different colour to give it more dramatic effect. It is made from recycled LEDs that I join together with one 220 ohm resistor. I connect different legs to the same resistor so only one eye will be on at a time, and you have to switch the polarity to light up the second eye.
Step 3: Connect the Head to the Body
Wire up the LED using wirewrap cables, this is very tiny and can be slipped in to the slit holes on the neck quite easily. In this photos you see I slip the cables through the holes to the body.
Step 4: Preparing the Chest Holes
Cut out 3 more holes on the chest. It is much easier to cut it out when you had the robot chest disassembled. the second photos, show the hollow chest ready for LED insertion.
Step 5: Prepare the Electronics
I used my previous circuit that I built for “Light Activated Valentine Gift” and also the completion of the code here. I had included the circuit here for completeness.
For simplicity, I won’t repeat the steps to build the light activated circuit here. Things to note, the way the light activated will need to be reversed, in this we want the Frankenbot to stay idle when there is sufficient light detected by the sensor, and when the light is off, it will came alive blinking it’s eyes and the chest lights and also playing the horror music at the background. So minor modification to the source code is necessary.
Read more: Frankenbot With Sound Effects and Lights