Arduino/iOS – Bike speedometer tracking using bluetooth

Scope of the project,
add a speedometer on my MTB to store and track the trip using only Bluetooth transmission, send data to iPhone and store to cloud for later data-analysis.

Used components:

  • digital display (controlled by the iOS app). Can show current speed (km/h), total km, current temperature, current humidity.
  • GPS module
  • bluetooth module
  • DHT sensor for temperature and humidity
  • Swift backend
  • mongoDB as database
  • Swift iOS App
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XCode – launch multiple simulators

Everyone that use XCode knows that to run the app in a different device, you need to select one from list, launch and wait the device to boot…
Well, it’s a mess. I hate a lot this feature.

So, today a trick to run all of your simulators and from XCode select the rigth one without wait the boot and debug the app… simultaneously!

It’s a great trick. Tried with XCode 7.

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