# E3 - Electronic Design
![mainboard](../img/mainbrd.png)
![mainboard](../img/mainsch.png)

## BOM
| Part    | Value                  | Device                 | Package                | Description                                                                   |
|---------|------------------------|------------------------|------------------------|-------------------------------------------------------------------------------|
| C1      | 22pF                   | 0612ZC225MAT2A         | CAPC3216X178N          | Capacitor 1206                                                                |
| C2      | 22pF                   | 0612ZC225MAT2A         | CAPC3216X178N          | Capacitor 1206                                                                |
| C3      | 10uF                   | CAP1206                | 1206                   | Capacitor                                                                     |
| C4      | 1uF                    | CAP1206                | 1206                   | Capacitor                                                                     |
| C5      | 100nF                  | CAP1206                | 1206                   | Capacitor                                                                     |
| C6      | 100nF                  | CAP1206                | 1206                   | Capacitor                                                                     |
| C7      | 100nF                  | CAP1206                | 1206                   | Capacitor                                                                     |
| C8      | 100nF                  | CAP1206                | 1206                   | Capacitor                                                                     |
| CRYSTAL | 16Mhz                  | CSM-7X-DU              | CSM-7X-DU              | SMD CRYSTAL                                                                   |
| IC1     | ULN2003AD              | ULN2003AD              | SO16                   | DRIVER ARRAY                                                                  |
| IC2     | ULN2003AD              | ULN2003AD              | SO16                   | DRIVER ARRAY                                                                  |
| J1      | TERM-1X02-FABLAB       | TERM-1X02-FABLAB       | ED555DS-2DS            | 3.5mm terminal block, 2 positions ED555-2DS as found in the fablab inventory. |
| J2      | TERM-1X02-FABLAB       | TERM-1X02-FABLAB       | ED555DS-2DS            | 3.5mm terminal block, 2 positions ED555-2DS as found in the fablab inventory. |
| J3      | TERM-1X02-FABLAB       | TERM-1X02-FABLAB       | ED555DS-2DS            | 3.5mm terminal block, 2 positions ED555-2DS as found in the fablab inventory. |
| J4      | TERM-1X02-FABLAB       | TERM-1X02-FABLAB       | ED555DS-2DS            | 3.5mm terminal block, 2 positions ED555-2DS as found in the fablab inventory. |
| JP1     |                        | PINHD-2X20             | 2X20                   | PIN HEADER                                                                    |
| JP2     |                        | PINHD-1X5              | 1X05                   | PIN HEADER                                                                    |
| JP3     |                        | PINHD-1X3              | 1X03                   | PIN HEADER                                                                    |
| JP4     |                        | PINHD-1X5              | 1X05                   | PIN HEADER                                                                    |
| JP5     |                        | PINHD-1X5              | 1X05                   | PIN HEADER                                                                    |
| LM2596  | DC-DC-STEP-DOWN-LM2596 | DC-DC-STEP-DOWN-LM2596 | DC-DC-STEP-DOWN-LM2596 | DC/DC Step-Down Regulator based on LM2596-ADJ chip                            |
| MICRO   | ATMEGA328P-AU          | ATMEGA48/88/168-AU     | TQFP32-08              |                                                                               |
| POWER   |                        | PINHD-1X2              | 1X02                   | PIN HEADER                                                                    |
| R1      | 10k                    | RESISTOR1206           | 1206                   | Resistor                                                                      |
| R2      | 0 Ohm                  | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| R3      | 0 Ohm                  | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| R4      | 0 Ohm                  | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| R5      | 0 Ohm                  | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| R7      | 80 Ohm                 | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| R8      | 1.6K Ohm               | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| R9      | 3.3K Ohm               | RES-US1206FAB          | R1206FAB               | Resistor (US Symbol)                                                          |
| S1      |                        | 6MM_SWITCH6MM_SWITCH   | 6MM_SWITCH             | OMRON SWITCH                                                                  |
| U$1     | LEDFAB1206             | LEDFAB1206             | LED1206FAB             | LED                                                                           |
