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Blynk Controlled Car

お父ちゃん  2016.9.25 
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Home > 電子工作 > Blynk Controlled Car

I made Blynk controlled Car using Adafruit Feather 32u4 Bluefruit LE. I can easily using Blynk!

Configuration

Blynkcar_% E3% 83% 95% E3% 82% 99% E3% 83% AC% E3% 83% 83% E3% 83% 88% E3% 82% 99% E3% 83% 9b% E3% 82% 99% e3% 83% BC% E3% 83% 88% E3% 82% 99

I use the BLE equipped microcomputer Adafruit Feather 32u4 Bluefruit LE and the motor driver DRV8835 to control the rotation of the two motors by Blynk.

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Parts

  • BLE-equipped microcomputer Adafruit Feather 32u4 bluefruit LE 

  • Motor driver DRV8835

     
  • Li-ion polymer battery 400mAh

     
  • Double gearbox

    gear ratio is 344.2 : 1
     
  • Universal Plate

     
  • Off-road tyre set

     
  • Ball caster 

Blynk Library for Arduino

Latest library is located in the following.
  https://github.com/blynkkk/blynk-library

Adafruit Feather 32u4 Bluefruit LE. is used. So, Arduino code is generated in reference to the following.

[Example] -> [Blynk] -> [Boards_BLE]-> [Adafruit_Feather_32u4_BLE]

Blynk settings

screenshot_2016-09-25-17-12-30

Create a new project . Select the Arduino UNO in hardware, because there is no Adafruit Feather 32u4 BLE yet. AUTH TOKEN will make a note so you use at the time of Arduino code generation ( or to send mail ).

screenshot_2016-09-25-17-12-42

Place the BLE widget and the joystick widget.

screenshot_2016-09-25-17-12-55

Joystick setting. The values of the two-axis are output in virtual pin V0. The values of X and Y are -255 to 255, respectively.

Arduino IDE Code

[Sketch Example]-> [Blynk]-> [boards_ble]-> [Adafruit_Feather_32u4_BLE] code generated by reference.

You can now control two motors by receiving the two values of the Blynk joystick and move them back and forth!

Blynk Connecting BLE

Screenshot_2016-08-25-12-42-56

Click on the BLE widget of the project.

Screenshot_2016-08-28-09-24-17

Click on the “Connect BLE device”.

Screenshot_2016-08-28-09-24-21

Then, conect to “Adafruit Bluefruit LE” by clicking “OK”.

Operation

In the future, I’d like to have this camera mounted on a head-mounted display (smartphone): roll: 

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