**[[ad_ul_data_logger|Uno-Leonardo Data Logger]]**
====== I/O Connector ======
===== Description =====
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
==== Used Pins ====
=== Arduino Leonardo Compatibility===
Digital Pin: **0, 1, 2, 3, 4, 6, 8, 9 **\\
Analogue Pin: **special (6, 7)**\\
Bus: **TWI**\\
Power Pin: **GND, +5V**\\
{{:ad_ul_data_loger_1_0_0:leo_pin_rj45.png?300|}}
=== Arduino Uno Compatibility===
Digital Pin: **0, 1, 4, 6, 8, 9, **\\
Analogue Pin: **4, 5, special (6, 7)**\\
Bus: **TWI**\\
Power Pin: **GND, +5V**\\
{{:ad_ul_data_loger_1_0_0:uno_pin_rj45.png?300|}}
=== Arduino Due Compatibility===
Digital Pin: **0, 1, 4, 6, 8, 9 **\\
Analogue Pin: **special (6, 7)**\\
Bus: **TWI**\\
Power Pin: **GND, +5V**\\
==== Config options ====
{{:ad_ul_data_loger_1_0_0:rect3613.png|}}
  - Analogue A6
  - Power +5V
  - SP Rx/D0 or D8 depends of JA1 4 row (a-b D8, b-c Rx/D0)
  - SP Tx/D1 or D9 depends of JA1 3 row (a-b D9, b-c Tx/D1)
  - Power GND
  - Digital D4
  - TWI SDA (Uno A4/Leo D2) or D6 depends of JA1 2 row (a-b D6, b-c A4/D2)
  - TWI SCL (Uno A5/Leo D3) or A7 depends of JA1 1 row (a-b A7, b-c A5/D3)

{{:ad_ul_data_loger_1_0_0:leouno_pin_rj45_con.png|}}
=== PullUp Jumper Array JA2 ===
If shorten each row connect PullUp resistor of 4K7 from +5V to corespondence line.
  - D4
  - line from pin 7 of RJ45 connector (see up for value)
  - line from pin 4 of RJ45 connector (see up for value)
  - line from pin 3 of RJ45 connector (see up for value)