Create a history graph that maps temperature values live on a TFT LCD in seconds. Just edit 2 variables and choose your graph's colour.
Project tutorial by Andrei Florian
Create a bar chart with your own data in seconds, all you have to do is edit 3 variables and choose your graph's colour.
A simple device that turns the lights on when the user approaches home.
It's a security feature for Arduino. User is required to input the unlock pattern before remotely controlling/monitoring Arduino.
Project tutorial by phpoc_man
An Alexa enabled door lock with face recognition and remote control.
Project in progress by Md. Khairul Alam
you can email me if you need any help with integrating the graph in your project.
It is not necessary to use the Yun, you could use any Arduino board that uses WiFi and is supported by the Blynk library, like the MKR1000, WiFi shield. There may be others supported, you could also use an esp device. The code will be subject to minor modification if you change the board though, refer to examples.blynk.cc for guidence on editing the code, email me if you need any help modifying the code.
Yes, that might be an issue over time, I am not really concentrated on battery usage in this project but there are some small things that might help your battery life;
- I would put a delay at the end of the void loop, this will make the Arduino request the data from Blynk at larger intervals of time, which means that Blynk does not need to read and send your phone's location continuously, which may save some battery life.
- You could also set the precision of the GPS widget to a larger area, eg 100m, this will make your phone send less data over WiFi/mobile data, which may also save some battery life, though minimal.
I am not sure by how much these solutions would save up, but you could give it a try.
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