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**[[ad_ul_data_logger|Uno-Leonardo Data Logger]]**
====== Compatibility with Arduino Leonardo and Uno, and modular selection of pins ======
===== Description =====
Functionality like TWI and ICSP bus are on different place on different Arduino board and version which make very complicate to create universal shield.\\
This shield have modular board/solder short cuts which give neccery flexybility to meet different options. 
==== Modular board/solder short cuts ====
{{:ad_ul_data_loger_1_0_0:uno_leo_mega_duo_data_loger_v1_0_0_modu_all.png?300|}}
=== P1 ===
Short cuts for compatibility with Arduino Uno to provide ICSP from D11, D12, D13 digital line. Also it is possible to connect to some other line.\\
{{:ad_ul_data_loger_1_0_0:uno_leo_mega_duo_data_loger_v1_0_0_modu_p1.png|}}
=== P2 ===
Shor cuts for connecting aditional analogue lines on some boards, or to connect to some standard analogue line.\\
{{:ad_ul_data_loger_1_0_0:uno_leo_mega_duo_data_loger_v1_0_0_modu_p2.png|}}
=== P3 ===
Short cuts for interchange between Arduino Uno and Arduino Leonardo which have diferent line for TWI bus, and also provide additional two line (SDA, SCL) to old Arduino Uno version.\\
{{:ad_ul_data_loger_1_0_0:uno_leo_mega_duo_data_loger_v1_0_0_modu_p3.png|}}
=== P4 ===
Short cuts for selecting analogue A3 line for SD card present or to select other analogue line.\\
{{:ad_ul_data_loger_1_0_0:uno_leo_mega_duo_data_loger_v1_0_0_modu_p4.png|}}
=== P5 ===
Short cuts for selecting digital D4, D6 and D7 line or to select other analogue line.\\
D4 and D6 are part of [[ad_ul_data_logger_rj45|I/O connector]] and D7 is part of [[ad_ul_data_logger_miniSD|miniSD memory card]].\\
{{:ad_ul_data_loger_1_0_0:uno_leo_mega_duo_data_loger_v1_0_0_modu_p5.png|}}