I decided to make a 3d printed robot arm from a design off of YouTube by the creator of “Howtomechatronics”
(https://youtu.be/_B3gWd3A_SI)
He gives a great explanation on how to build it. I am running 6 servos from an arduino uno r3 and a sensor shield v5.0 along with an HC-05 Bluetooth module. All the servos run from the arduino code but something in the Bluetooth to app connection is not working. The HC-05 is wired into 5v, GND, RX and TX ports. I made sure they going to the right pins using the continuity setting on my voltmeter. The app is default from “howtomechatronics” which was created with “MIT App Intentor.” I don’t know much about programming or app design but all I need is to get the 6 servos running on sliders from an app on my phone. I can connect to the Bluetooth module but the signal is not being read and the servo positions don’t change. I have also tried different app and arduino code combinations from other videos and still nothing has worked. Any help would be greatly appreciated.
Thanks!