*SIXTH*WEEK: Electronic design

Assignment

1. Individual assignment:

• Show your process using words/images/screenshots.
• Explane problems and how you fixed them, incluiding how you worked with design rules for milling.
• Incluided original design files.

Individual assignment




BOARD DESIGN: Firts I had to know several concepts and laws for redrawing the echo hello-world board. I also had to add a button and an LED. I first designed a schematic circuit in my notebook and later tried the design on Eagle, but I needed a tutorial for a correct design. On the next try I used the "Sparkfun's EAGLE tutorial: Schematic" but I used: a microcontroller Attiny44, a resistor of 10K, a resistor of 499ohm, a Led green of 1.8V, a unpolarized capacitor of 1uF, a resonator of 20MHz, a button, a FTDI header and a ISP header. After I designed the board in eagle with the elements of the schematic. I tried to design a dinosaur but I didn't get then I draw a head os dinosaur or something similar. I had a small problem with the gap between the ways.

MAKE BOARD: I finally built my board and put my components together. And at the end I got it. When I cut in the milling machine I had a small problems with mods because the calculation of mods towards paths together. Also I had a mistake because I deleted a path that I needed (path of reset). For solucion I changed the track width from 0.016 to 0.015 inch. Finally I got it and I sodered the components. Export eagle model in PNG format and I added a small text and image. The componentes that I used was:
1. Attiny44
2. Resistor of 10Kohm
3. Resistor of 499 ohm
4. Led green of 1.8V
5. Resonator of 20 MHz
6. Unpolarized capacitor of 1uF
7. head 3X2 pins
8. FTDI 6pins
9. Button
FILES:
- Traces
- Interior
- File eagle board
- File eagle schematic