Pinout Sensor on flex cable

Pullup resistors may be used to reduce noise from PSU. On the adafruit breakout they used 10kΩ on SCL, GND and SDA.

Mapping flex PCB to chip PINs

• VCC = Pin 5 (VDD) + Pin 6 (nRESET)
• SCL = Pin 4 (T)
• GND = Pin 2 (R)
• SDA = Pin 1 (RH)

Links

• Datasheet
• Arduino library from Sensirion
• Seed Studio Datasheet and Design guidelines
• Seed Studio breakoutboard schematics and pcb design
• Seed Studio - minimal library and sample code
• Adafruit breakout guide, schematic and pcb

Solder a cable to use it on breadboard

Sample pictures from Urs Marti