Week 4: Dev Environment Setup & Management Change

2020-02-21 CHLA Team

This week we lost our Production Manager. That being said, we have elected a new PM and are still full steam ahead!

For this posting, we are stepping back a bit to review the development environment setup for the breathing games. Without further ado…

Arduino Setup

Connect the M5StickC to your computer via the micro USB cable
Install and run the Arduino IDE from https://www.arduino.cc/en/main/software
In the Arduino IDE install the appropriate board manager and libraries ESP32 (Board Manager)
Go to File -> Preferences -> Settings
Copy this link for the ESP32 Board Manager URL to Additional Boards Manager URLs input field and click OK: https://dl.espressif.com/dl/package_esp32_index.json
Go to Tools -> Board: -> Boards Manager…
Search for ESP32 and install it M5StickC (Library)
Go to Sketch -> Include Library -> Manage Libraries and search for M5StickC and install it OSC by Adrian Freed, Yotam Mann et.al (Library)
Now Search for OSC and install it.
Go to Tools -> Board: and select M5Stick-C
Go to Tools -> Upload Speed and select 115200
Go to Tools -> Port and find and select the USB port your M5StickC is connected to, e.g. COM3.

WiFi network

If you want to develop at home, we found that you can use a local 2G wifi network. Otherwise use the usb wifi router provided by the professor. Just power on the wireless router via a micro USB cable and connect to the network. At the writing of this post these are the network deets:

Network name: SpirometerNet
Pass: CHLA2020
Router admin site:
Address: 192.168.0.1
User: admin
Pass: admin

Take note of your network IP address (e.g., 192.168.0.101)

Digital Spirometer

Download the digital spirometer files
In the Arduino IDE open the M5_Spirometer_2020.ino file
On ~line 44, const char * udpAddress = “192.168.0.111”; change this to your IP address
Verify/Compile the code (click the round checkmark icon)
Now Upload the compiled code to the M5StickC (click the round arrow icon)
No errors? Then the digital spirometer is all set. Congrats!

Digital Spirometer OSC tool

Now run the Digital spirometer OSC tool.exe
Update the IP address to your IP and the port to 8000
If all is setup probably blowing into your attached mouth piece on the Digital Spirometer should produce a signal in the OSC tool.
Jump for joy! Pump your fist in victory! The sensor is working correctly!

Unity + Oculus

Just follow this great medium article:

» How to get started with Oculus Quest and Unity on macOS.

– The CHLA Team