Digikey parts from Tom Igoe
| Arduino RS232 BOM | |||||||
| Parts | Qty | Value | Device | Farnell | RS | Distrelec | Digikey |
| S1 | 1 | Reset pusbutton | 535916 | SW400-ND | |||
| IC2 | 1 | 78xxL | 7805 TO220 | 701853 | LM7805CT-ND | ||
| X1 | 1 | DB9 PCB female connector | 4106118 | A2100-ND | |||
| LED1 | 1 | Green LED | 656719 | 160-1144-ND | |||
| POWER | 1 | 4 pin header | 3291777 | A26509-20-ND | |||
| J2 | 1 | 6pins header | A26509-20-ND | ||||
| J1, J3 | 2 | 8 pins header | A26509-20-ND | ||||
| X2 | 1 | 2.1mm power jack | 224959 | CP-102AH-ND | |||
| Q1 | 1 | 16 MHz Quartz | 641029 | 300-6034-ND | |||
| D1 | 1 | 1N4004 | 1N4004 or equivalent | 251707 | 1N4004GICT-ND | ||
| D2, D3 | 2 | 1N4148 | 1N4148 | 399390 | 1N4148FS-ND | ||
| R7 | 1 | 1k | 1/4 W resistor | 509164 | 1.0KQBK-ND | ||
| R3 | 1 | 4k7 | 1/4 W resistor | 509243 | 4.7KQBK-ND | ||
| R1, R4, R5, R6, R8 | 5 | 10k | 1/4 W resistor | 509280 | 10KQBK-ND | ||
| C8 | 1 | 10u | Electrolitic Capacitor | 920502 | P11250-ND | ||
| C2, C3 | 2 | 22p | Polyester Capacitor | 896410 | 1330PH-ND | ||
| C1, C5 | 2 | 100n | Polyester Capacitor | 146079 | P4201-ND | ||
| C6, C7 | 2 | 100u | Electrolitic Capacitor | 920629 | P10269-ND | ||
| R2 | 1 | 220 | 1/4 W resistor | 509097 | 220QBK-ND | ||
| X3 | 1 | 28pin IC socket | ED3128-ND | ||||
| IC1 | 1 | ATMEGA8 | Atmega8 28pin DIP microcontroller | 3917927 | ATMEGA8-16PI-ND | ||
| T1 | 1 | BC547 | Transistor | 357054 | BC547BOS-ND | ||
| T2 | 1 | BC557 | Transistor | 4399821 | BC327OS-ND | ||
| ICSP | 1 | ICSP | 2x3 pins header | 3291947 | A26509-20-ND | ||