Do I need to use a logic level converter for LoRa?

Projects General Guidance
1

Hi, I wanna make a project and I need some advice, I want to use a Sx1278 LoRa module for my project and befor I buy them I want to know if I should use a logic level converter for all the logic pins or it s ok if I connect the LoRa module Vcc pin to 3.3 Arduino pin because from what I know all logic pin form arduino use 5V

2

Yes you do need logic conversion.

Do not connect the 5V logic level pins on your not revealed Arduino to an SX1278 without it.

Some boards\modules\shields might have the logic level conversion built in, but no advice on that possible since you have not revealed which LoRa board you are using.

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3

To connect 5V and 3.3V devices, logic level converters are always required.

In many cases the converters will be built into a sensor module (especially if you buy from a hobby supplier like Adafruit), but you always have to check, and if not, buy one.
This one is inexpensive and reliable.

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4

Except, in some very special cases, where a 3.3V output can connect directly to a "5V tolerant" input.

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5

The arduino board is a nano v3.0 and the lora module is mini sx1278.

6

Thanks for your answer.

7

Can you help the forum, what is a 'mini sx1278' ?

8

Well, is xl1278-smt but i find it called in that way too

9

Provide a link to your "module".
It may be level shifting is already incorporated on the "module".

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