Board use RJ45 connector to provide connection to follow function

• Power line +5V, GND
• Serial port Rx, Tx (digital line D0 and D1)
• TWI interface SDA, SCL (depends of version Uno Analogue Line A4,A5, Leonardo Digital Line D2, D3)
• Analogue Line A6,A7 (use from special models or may be reconected to other Analogue Line)
• Digital Line D8,D9,D4,D6

Digital Pin: 0, 1, 2, 3, 4, 6, 8, 9
Analogue Pin: special (6, 7)
Bus: TWI
Power Pin: GND, +5V

Digital Pin: 0, 1, 4, 6, 8, 9,
Analogue Pin: 4, 5, special (6, 7)
Bus: TWI
Power Pin: GND, +5V

Digital Pin: 0, 1, 4, 6, 8, 9
Analogue Pin: special (6, 7)
Bus: TWI
Power Pin: GND, +5V

1. Analogue A6
2. Power +5V
3. SP Rx/D0 or D8 depends of JA1 4 row (a-b D8, b-c Rx/D0)
4. SP Tx/D1 or D9 depends of JA1 3 row (a-b D9, b-c Tx/D1)
5. Power GND
6. Digital D4
7. TWI SDA (Uno A4/Leo D2) or D6 depends of JA1 2 row (a-b D6, b-c A4/D2)
8. TWI SCL (Uno A5/Leo D3) or A7 depends of JA1 1 row (a-b A7, b-c A5/D3)

If shorten each row connect PullUp resistor of 4K7 from +5V to corespondence line.

1. D4
2. line from pin 7 of RJ45 connector (see up for value)
3. line from pin 4 of RJ45 connector (see up for value)
4. line from pin 3 of RJ45 connector (see up for value)