This project was to create a breakout board for an ATtiny84 8 bit microcontroller that would be suitable for breadboard prototyping. The breakout features power components so the microcontroller can be powered from a USB cable. The breakout also included a header for in-circuit programming.
Printed Circuit Board (pcb)
Front of pcb
Back of pcb
Schematic
Bill of Materials
| Schematic | Item | Description | |
|---|---|---|---|
| C1 | Filter | 10uF, 25V, 10% | |
| C2 | Filter | 10uF, 25V, 10% | |
| C3 | Bypass | 0.1uF, 50V, 10% | |
| C4 | Reset | 0.1uF, 50V, 10% | |
| D1 | Power indicator | red, 65mw, 5V | |
| IC1 | Regulator | 3.3V, 1A | |
| IC2 | ATtiny84 | 8 bit microcontroller, DIP in socket | |
| J1 | Power connector | Micro USB | |
| J2 | Breadboard connector x7 | Male headers | |
| J3 | Breadboard connector x7 | Male headers | |
| J4 | Reset enable | Jumper, male header x2 | |
| J5 | Programmer connector | Shroud, 6 pin | |
| R1 | Power indicator | 100 Ohm, 1/4w, 1% | |
| R2 | Reset pullup | 100 Ohm, 1/4w, 1% | |
| S1 | Reset switch | SPST 3.5X5mm button, tactile |