SENSIRION SHT31 Smart Gadget, Reference Design, Page: 6 / 12

© Copyright Sensirion AG, Switzerland 6/11
Component Type Qty. Designator Footprint Manufacturer Manufacturer
Part Number
Crystal ABS07-
32.768KHZ-
T 1 Q1 2SMD-ABS07 Abracon LLC ABS07-32.768KHZ-T
Capacitors 100n,
10V/X7R
9 C1, C2,
C3, C4,
C5, C6,
C7, C8,
C23 C_0402 n/a n/a
Capacitors 22u, 6V3/X5R 4 C10, C11,
C12, C13 C_0805 n/a n/a
Resistors 10k, 1% 2 R4, R6 R_0402 n/a n/a
3.1.3
PCB Layout
PCB layout data including schematic, Gerber files, assembly files and bill of materials is available on GitHub:
https://github.com/Sensirion/SmartGadget-Hardware
3.2 Firmware for BLE Module
The firmware for the BLE module can be found on GitHub:
https://github.com/Sensirion/SmartGadget-Firmware/tree/master/BLE_Module_nRF51822
3.2.1 Debugging
3.2.1.1 Required Tools
-
IDE: Keil uVision 4 or 5
-
Debugger for Cortex M0 Devices (j-Link, j-Link Lite, ULINK2, …)
3.2.1.2 Preparation
Connect your debugger to the Smart Gadget debug interface ST1.