DIY smartphone robot using simple electronics (no arduino / micro controller)

[Patryk_F]

Nice idea, but it is possible to use only the bt module and 2 leds or connect module bt directly to motors instead of a telephone.
See this topic:

Bluetooth HC-05 connected to HC-06. Standalone. Turn on/off LED. Experiment

1.- Bluetooth HC-05. AT commands. HC-05 Bluetooth modules contain an MCU. It has PIO terminals. [hc-05_1] Image from (Datasheet): http://kio4.com/arduino/imagenes/banggood-hc-05-manual-optimized.pdf I wanted to make the following montage. I soldered a wire to the PIO5. I wanted to turn on the LED from the app using AT commands. But it didn't work for me. [hc-05_2] [hc-05_3] I tried other methods.