I have recently got an Arduino Uno R4 Minima, a Pimoroni Multisensor and a Waveshare 3.5" TFT Touch Shield. I also have this cable for I2C communication via GPIO (I do have the necessary male-to-male wires to connect this to the Arduino). However, after installing the screen, I physically cannot connect the multisensor to the board as all the pins are inaccesible after attaching the screen. Is there any way to do so? I'm looking for guidance from experienced members.
The advantage of Arduino with the Uno shape, and shields, is that they make it easy to connect one to the other. The disadvantage is that they make it difficult to connect anything else. In my opinion, the disadvantages outweigh the advantages. But you have purchased the parts now....
There are proto-shields that allow stacking other shields on top. Perhaps you can fit one of these between the Uno and the display shield, and the proto-shield will allow you to connect the sensor board.
I cannot find any Uno R4 proto-shields. Would an Uno R3 proto-shield work? And do I need to buy headers as well?
According to this page,
Arduino UNO R4 preserves the standard form factor, shield compatibility, 5V power supply and robustness of the UNO range
I believe this means an R3 proto shield should also be compatible with R4.
Yes, unless they come provided with the shield, and they need to be "stacking headers".
I assume this is kind of what @PaulRB proposes
https://www.digikey.com/en/product-highlight/p/ptsolns/proto-shield-for-uno-development-boards
The manufacturer claims that it's usable for UNO R3, R4 and Mega as well as Leonardo.
A critical feature is that it's fully stackable, there are proto shields that are not!
Important is that you check which pins are used by the screen! Pin sharing is not always possible... it depends...
As @PaulRB already posted shields do have advantages but in a lot of cases they are hindering.
Good luck!
ec2021
P.S.: There is also a webpage regarding this topic in the official Arduino documentation
https://docs.arduino.cc/tutorials/uno-r4-minima/shield-guide/
that seconds @PaulRB 's information!
Perhaps I was not clear in my original post. I am looking to split the GND and 3.3V (or 5V would also work) pins to connect to my sensor.
You may lookup the pinout diagram
https://docs.arduino.cc/hardware/uno-r4-minima/
and you'll find two further places to access 5V and GND...
Where? I see where 5V is but I din't know how to access it. Keep in mind I can't solder. I am using the barrel jack to power the Uno.
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