Main Unit Sensors connector

	1	2	2	4	5
1	NC	NC	3.3v	GND	NC
1	SCL	SDA	5v	GND	RST

Voltage Converter board to Main Unit connector

	1	2	3	4	5
1	5v	GND	SDA	SCL	RST
2	3.3v	GND	NC	NC	NC

	1	2	3	4	5	6	7	8	9	10
1	GND	3.3v	RST	SCL	SDA	SDA	SCL	RST	5v	GND
2	GND	3.3v	RST	SCL	SDA	SDA	SCL	RST	5v	GND