String dataIn = "" Code language: Arduino ( arduino ) SoftwareSerial Bluetooth ( 3, 4) // Arduino(RX, TX) - HC-05 Bluetooth (TX, RX) int servo1Pos, servo2Pos, servo3Pos, servo4Pos, servo5Pos, servo6Pos // current position int servo1PPos, servo2PPos, servo3PPos, servo4PPos, servo5PPos, servo6PPos // previous position int servo01SP, servo02SP, servo03SP, servo04SP, servo05SP, servo06SP // for storing positions/steps int speedDelay = 20 Then we need to define the six servos, the HC-05 Bluetooth module and some variables for storing the current and previous position of the servos, as well as arrays for storing the positions or the steps for the automatic mode. Both of these libraries are included with the Arduino IDE so you don’t have to install them externally. So first we need to include the SoftwareSerial library for the serial communication of the Bluetooth module as well as the servo library. And at the end of this article I will post the complete source code. Arduino Robot Arm CodeĪs the code is a bit longer, for better understanding, I will post the source code of the program in sections with description for each section. As an Amazon Associate I earn from qualifying purchases. Amazon / Banggood / AliExpressĭisclosure: These are affiliate links. HC-05 Bluetooth Module ………………….… Amazon / Banggood / AliExpress.You can get the components needed for this example from the links below: ![]() So once we have connected everything together we can move on to programing the Arduino and make the Android app. ![]() The power source must be able to handle at least 2A of current. ![]() For powering the servos we need 5V, but this must come from an external power source because the Arduino is not able to handle the amount of current that all of them can draw.
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