Hey there, thanks for checking out my little project. For context, this is my first foray into Raspberry Pi tinkering, my third or fourth Android app, and my second or third Node.js server. I also spun this all up in roughly a day.
Given those constraints, things are a bit of a mess. I plan to use this code as a template for larger Pi projects, so I want to clean up the code as I add to it and learn more about proper architecture.
This README is mostly for my own learning, its probably missing important information for actually implementing this yourself. Please contact me if you've got any questions!
Flip a physical switch and see a number increment on your smartphone!
A Python script on the Pi monitors the switch state and sends a signal (via HTTP) to update a Node.js server, running on the same Pi. The Node.js server updates a Switch document in MongoDB and sends a JSON object via Socket.io to any Android clients that are listening on the socket. The Android client then updates its LiveData and populates its fragment with the new data.
This codebase contains everything to make this work, other than wiring the switch and
configuring the script.
Important note: I haven't actually used this with a physical switch yet, as we're waiting
on parts. There's a test script (Flipper.py) in switch-client that I've used to test the
system. You'll need to fiddle with my script implementation till your button/switch works
for you. Shouldn't be too tough.
switch-client: Python script/client to monitor sensor/hardware (just a switch rn) running on a Raspberry Pi
server: RESTful API on a Node.js server, data hosted via MongoDB
android-client: Android client to display sensor (switch) data.
Hit me up and I'll walk you through it. If you've got a wireless Raspberry Pi with a button or switch wired to it and an Android phone, you should have everything you need.
Basic steps:
- Clone project onto your Pi
- Configure switch-client to talk to your button/switch
- Configure switch-client, server and android-client to use your local IP addresses
- Spin up a MongoDB custer
- Configure server to speak with your MongoDB cluser.
- Build the app from Android Studio onto your phone
- Spin up the server and clients on the Pi
- Start the app