[Dprglist] Need suggestion for expansion boards for STM32 to build a robot

[Thalanayar Muthukumar]

Thanks Chris for the inputs.
The STM32 is in addition to the RPi setup. Post the last update, I have not had the time to work on my RPi setup.

Regards.
- Kumar

Sent from my iPhone

> On Oct 22, 2021, at 6:42 AM, Chris N <netterchris at gmail.com> wrote:
> 
> 
> 
> Kumar,
> In principle that Arduino shield should work for you, provided there are no issues with voltage levels.  The STM32 is 5V-tolerant, so probably nothing to worry about on that end.  Maybe more of a question if the Shield gets the voltage it needs.  It probably will, because the arduino headers have a pin reserved for 5V.   It's just one of those things worth double checking, though, before you start banging your head against the wall....
> Maybe more worth noting is the fact that the shield uses the L293 motor driver   (not the 298).  The L293 is not exactly very powerful.   1.2A max.
> 
> P.S.:  what happened to your plans with Pi + Ubuntu + ROS ?  Is the STM32 an addition to that setup, or instead of that Pi-based setup?
> 
> Chris.
> 
>> On Thu, Oct 21, 2021 at 3:19 PM Thalanayar Muthukumar <tnkumar at gmail.com> wrote:
>> Thanks Chris. 
>> I have this Arduino shield (https://www.amazon.com/gp/product/B01LX9TLP5/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1) which can possibly be used with the NUCLEO - I may need to confirm that the voltage levels match. Beyond that, in the initial phase, I have my I2C(StemmaQT) BN055 and StemmaQT OLED display that I may want to use.
>> 
>> In later stages, after I get my initial STM32 robot moving, may consider other sensors.
>> 
>> Regards.
>> - Kumar
>> 
>>> On Thu, Oct 21, 2021 at 7:16 AM Christian M Netter <netterchris at gmail.com> wrote:
>>> Do you have a rough idea of what type of sensors And actuators and how many of each you will be connecting?
>>> 
>>> That will tell you what type of I/O and how much of each you will need
>>> 
>>> What is lacking from the nucleo board that you purchased?
>>> 
>>> Most STM 32 boards probably have enough I/O for a basic robot so you might not actually need an expansion.
>>> 
>>> The only thing you might need is a motor driver.
>>> 
>>> Chris
>>> 
>>> On Oct 21, 2021, at 12:05 AM, Thalanayar Muthukumar via DPRGlist <dprglist at lists.dprg.org> wrote:
>>> 
>>> 
>>> So far, in the past few months, I have been building Arduino or RPi based robots.
>>> I decided next, to use the STM32 and ordered a NUCLEO STM32L476RG Kit.
>>> 
>>> Need suggestions for expansion boards that can help me build a robot.
>>> I see many Arduino shields and Pi Hats, but could not locate the right expansion board. 
>>> 
>>> Or instead of the NUCLEO kit, should I be looking at other STM32 boards?
>>> I do not want to build a custom board.
>>> 
>>> Regards.
>>> - Kumar
>>> 
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