Respository-of-WBR-SH
This respository collects the resources of WBR-SH
Competitors
Liftup is a sensorised resistance band, with loadcell sensor only, on kickstarter. Cancelled in April 2016
Research with Dementia
APP
Android
Usefull BLE tester nRF connet
Create / communicate with a service guide (Chinese)
How should large amount of data receive+（using service） 安卓 蓝牙 android BLE 开发 (上)
Firmware Design
All Tutorials by Nordic Employees
Server
REST API design guide(Chinese)
Bluetooth 5
Hints to achieve higher speed with ios and android (4+ packages in 1 interval): Maximizing BLE Throughput on iOS and Android
Hints to avoid options overlapping in multiple connection How to connect to multiple Bluetooth Low Energy devices
Calculate throughput for BLE4.2 & 5.0 Bluetooth 5 speed: How to achieve maximum throughput for your BLE application
BLE tutorials
Advertising: Bluetooth low energy Advertising, a beginner's tutorial
Service:Bluetooth low energy Services, a beginner's tutorial
Characteristics:Bluetooth low energy Characteristics, a beginner's tutorial
Hardware Design
Tools for design:
Circuitmaker: A community version of Altium Designer
AppCAD: RF circuit calculator
Similar project: Nordic Thingy:52
MCU
nRF52832
RF reference
This blog generally introduces the hardware and RF design of nRF52 chips General PCB design guidelines for nRF52
Antenna tuning whitepaper by Nordic Antenna tuning
Antenna datasheets
This one is used in nRF Thingy project (52832): 2450AT18B100
This one is used with nRF51822: 2450AT43A100
Johanson Chip Antenna selection guide
Sensors
IMU sensor: MPU-9250
9-Axis sensor
Reference design of using the MPU9250 on nRF5288: nRF Thingy. FW of nRF Thingy
Atmospheric pressure sensor: LPS25H
24-bit 25 Hz ODR
Reference design of using the MPU9250 on nRF5288: nRF Thingy. FW of nRF Thingy