Wiring diagram about openbot HOT 8 CLOSED

The voltage divider is used to measure the battery voltage. The battery has a voltage of 9.6-12.6V. But the ADC of the Arduino can only measure a voltage of up to 5V. For example, you can use a 20k and 10k resistor and then set the multiplier in the app to 3. One end of the 20k resistor is connected to Vin and the other to the Arduino pin A7 and one end of the 10k resistor. The other end of the 10k resistor is connected to GND. More info here.

We use the NewPing library for the Ultrasonic sensor. It supports single pin operation and automatically toggles this pin to be an input and output depending if the echo signal is sent or it is waiting for the trigger signal to be received. You can also connect it to two pins as in other tutorials if you prefer. Just make sure to keep it event-driven as in the code, otherwise the ultrasonic sensor will block the rest of the code.

from openbot.

Got it. So voltage divider is about arduino power supply.
Maybe it's better to use some DC-DC convertor since we losing part of the energy as heating on resistors.
Something like: https://www.aliexpress.com/item/33004374185.html

from openbot.

Hm, I reread instructions again and looks like this voltage divider isn't for power supply, sorry.
Is it for battery charge level checking? I confused because there is no resistors in the bill of materials...

from openbot.

Yes, it is to check the battery voltage and it is optional.

from openbot.

Closing due to inactivity.

from openbot.

I'm sorry but my request still open. Maybe in future you can add picture with the wiring diagram?
In other issue I found question about wiring motors. It could help with robot assembly for others.

from openbot.

I have added a wiring diagram. Does this answer your questions? If not feel free to reopen the issue or open another one.

from openbot.

Cool, thank you! Sorry, I missed your commit.

from openbot.