Newer
Older
Add-on board
============
Since 2023, the esieabot has been equipped with a dedicated PCB to control its motors. It also adds new components such as an LED and an integrated button or an analog/digital converter.
.. image:: add-on-board.png
:width: 300
:align: center
Components
----------
The esieabot add-on board is equipped with a DRV8411 motor controller from Texas Instrument as well as a TLA2024 analog-to-digital converter. The ADC is connected to the :doc:`Raspberry Pi</understand/raspberrypi/raspberrypi>` I2C bus.
Used pins
---------
The add-on board connects a few components directly to the Raspberry Pi GPIOs as follows:
* Button on GPIO 6
* LED on GPIO 26
* Motor controls on GPIO 17, 22, 23 and 25
* Servo motors on GPIO 18 and 13
* Speed sensors on GPIO 4 and 16