Color your Halloween with this Skull mood light's. Use as a scepter or lantern.
For this project I used 3d printed hull and attiny2313 on small prototyping board.
Step 1: 3d Print Hull
I used 3d printer to print hull of the skull. STL files are included.
Step 2: Materials
1x 20-pin DIP Socket
1x prototyping board (10x10 holes)
1x 0.33uF capacitor
1x 1.33uF capacitor
4x 100Ohm resistors
1x Micro Slide Switch
1x 9V battery
1x 9V battery connector
Cut and bend parts before soldering.
Step 3: Solder Parts
Don't solder all pins at once, because some hole sharing is used.
1. Solder in just two corners of socket.
2. Insert resistor and bend its pins to form tracks on board. Cut to length and Solder.
3. Repeat with other resistors.
4. Solder in micro switch and wires.
5. Solder in RGB led.
6. Use electricians tape to isolate back of LM7805 from other components
7. Insert capacitors ant LM7805 and solder together.
Step 4: Test
Connect battery (without microchip) and test holes in DIP socket where in Vcc and GND will be. Use image for reference.
I used digital multimeter, but anything that could measure 5V could be used.
You can also short Vcc and DIP socket holes connected to LED's to see if colors light up.
If multimeter reads 5v and you can light up different colors manually, most probably there are no mistakes, and you can insert micro controller safely.
Step 5: Program
There are some comments in the code to explain how things work.
Also some "#defines" to make the code more readable.
I used myMultiProg MK2 programmer and WinAVR software to upload program to attiny2313.
There are other options.
You can make one yourself, many instructables on this site https://www.instructables.com/howto/avr+programmer...
Or you can use arduino:
Step 6: Assemble
Insert attiny2313 in the socket and power up.
Colors should change randomly few times in a minute.
To speed up of slow down adjust delay times in the code.
Put everything together as shown in the pictures.
Use toothpick between skulls teeth to reach to the switch.