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Interconnecting 5V and 3V serial devices - tutorial (#96)

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Interconnecting 5V and 3V serial devices - tutorial (#96)

6,218 views November 11, 2019 15:59

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ChannelMartyn Davies

Description from the creator

I connected this icstation signal generator to an Arduino before (youtu.be/1gkhW2-eBPA), but wanted to connect to it to a 3.3V core device to show how 5V and 3V devices can work together.

Here I show some Python code for the micro:bit and for the Raspberry Pi (both 3V core), and also describe how the level shifter hardware works.

Code for this video:
github.com/magiccow/serial-signal-generator

Application note with interesting explanation of the MOSFET 5V to 3V level shifter:

nxp.com/docs/en/application-note/AN10441.pdf

Obviously, shop around on ebay etc to find the best price, but the ones in this video I got from Aliexpress (about 5 for a £1)

aliexpress.com/item/5-Sets-4-Channel-Bi-Directi…

About this tutorial

Martyn Davies published this 15:59 video tutorial on November 11, 2019. It has been watched 6,218 times on YouTube.

Duration
15:59
Published
November 11, 2019
Views
6,218
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