With the variety of different IoT-related work we do (including the oft-blogged-about CWRU course), it only made sense for us to have an “IoT sandbox” to experiment and play with. It was one of our hack days that provided us with an opportunity to bring such an idea to life.
Building a sandbox gives us an opportunity to experiment with new IoT devices and software, while giving LeanDoggers a breakable toy to work with during hack days …and for some nerdy fun. It also allows us to start collecting sensor data for research and exploration.
The first iteration of this idea consisted of two parts — one team would build an Alexa Skill for the Amazon Echo to ask as an interface to other devices on the Boat-of-Things network, while the second team would build the infrastructure, set up the MQTT broker, and start connecting other devices.
By the end of the first iteration, we had established our user interfaces into the Boat of Things — a Slackbot called Otis, which acts as a sort of command-line interface, and an Alexa Skill, allowing us to say “Alexa! Ask Otis to <verb>”.
We also built our first actual integration — a long-standing issue in the LeanDog Studio is music. Since the inception of LeanDog Studio, we’ve used a Mac Mini attached to speakers running a browser with Pandora. We would individually VNC into the server to change stations, with a mutual understanding that any station played should be kept on for at least three songs to prevent music anarchy.
Okay, so we didn’t solve music anarchy — what we created is a Google Chrome plugin that scrapes the website and publishes the stations and current playing song. It subscribes to a control topic that allows playback control and changing stations.
By the end of all this, we could say “Alexa! Ask Otis what’s playing” or use Slack:
The number of integrations we’ve built since then has exploded. Here are some of them:
A couple years back GE created this module for makers called Green Bean which can connect to the diagnostics port of some of their appliances. We just happened to have compatible appliances on the boat, so we ordered one and hooked it up to our fridge and a Raspberry Pi.
The status of the fridge is now published over MQTT, which allows us to create some alarms:
And do some fun useless things:
In the quest to attach all the things, we found that our weather station upstairs had a USB port! We attached yet another Raspberry Pi (we’ve got a lot of Raspberry Pis) and publish the data every few seconds. We also used the opportunity to script an integration with Wunderground — our station handle is KOHCLEVE65. Now we can ask Otis for the weather:
CI Screen + Radiator
We have a couple radiators running on mounted TVs around LeanDog Studio, including a CI board and individual project radiators. All of those subscribe to a marquee topic, which allows us to display images and animated gifs for a set amount of time. For instance, when someone finishes off the coffee and doesn’t brew a new pot:
Works In Progress
In the future hope that we’ll be able to play some music when the boat starts rocking, we started logging motion events on the boat. To do this, we employed the help of an ESP8266 module and a 9DOF sensor.
This is a really cool module that uses several sensors including accelerometer, gyroscope, and magnetometer and outputs simple euler angles so we know our position and orientation in 3D space. Right now we’re just collecting data in Amazon DynamoDB — soon, we hope to trigger some interactions when the boat starts moving — maybe a dramamine dispenser?
Our own Steve Jackson is working on a connected coffee scale to let us know how much coffee is left in our carafes and when it’s time to brew a new pot. The proof-of-concept has been completed and soon we’ll be building two of them and installing them in the kitchen.
That’s it. Let’s polka!
Finally, every Friday morning after standup, we allocate a little time to cleaning up the boat. For historical reasons that no one quite remembers, we do this to polka music. Thanks to an integration with the Amazon Dash button, announcing cleanup is simpler than ever:
Developing an amazing technology product of your own? Take our 1-Minute self-assessment to make sure you’re project is on-track for a successful launch! Or, reach out to us at LeanDog.com! We’d love to hear all about it!