That's My Spot!

For those who are familiar with Big Bang Theory, you are probably well aware about Sheldon’s intimate (some would call it crazy) relation with his ‘spot’. For those who aren’t familiar, (it’s a crappy show anyway) Sheldon only sits on a specific spot on the sofa, because of various reasons such as wind draft, proximity to the radiator and a perfect viewing angle to the television. No one else is allowed to sit there while Sheldon is home because he can’t sit anywhere else without bursting a vein.

This project is perfect for all the Sheldons out there, who would like to protect their office chair/home workstation. This project is a device that rings an alarm anytime someone sits on your spot. What’s more, you get a notification about it too, and only you can disable the buzzer.

And yes, it’s super simple to build, thanks to Bolt IoT!

Hardware Setup

Connect one end of the FSR with the A0 pin of Bolt and the other end of the FSR into the 5V pin of Bolt. Similarly, connect the longer end of Buzzer (+ve) to any pin (0-4) of Bolt and the smaller one (-ve) to the ground (Gnd). Also, don't forget to add some resistance (10k ohm resistor), to the A0 pin of Bolt and the other end must be connected to the Ground (Gnd).

Get your Bolt API Key and Device ID

Login to cloud.boltiot.com and note down the ID of your Bolt WiFi Module. Now click on the API Tab and under the Generate Key section, click on Enable.

Next click on the copy button to copy your API key. Your API key will look something like this:

 f1f918e9-d9c2-4e5b-aed0-b7cb743f74cf

Working on Android:

It's pretty simple! Just run a service through your Android device, which continuously checks if someone else has seated themselves, on your chair. You can in special case allow your friend to be seated on your chair; of course, with your due permission!!! For this, use a button in the app, to switch off the alarm.

You can refer to this android service source code, and design your own personalised app to suit your needs.

The Android app screen appears somewhat like this. You can make it a bit fancy, if you wish so!!!

Note: Don't forget to change the API Key and the ID of your Bolt Wifi module.

And hooray!!! Your chair is all ready to be 'Yours Forever'!!!