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Can anybody help me source a bidirectional I2C voltage level converter?  

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Bill21
(@bill21)
Active Member
Joined: 2 months ago
Posts: 16
2020-06-09 5:54 pm  

Hi, I want to hook up a Raspberry Pi to an Arduino. I have watched the Dronebot Workshop tutorial on it. I understand that I can hook them up OK except that My Arduino is a clone. So I don’t know if it will automatically step down from 5 volts to 3.3 volts. So I want to take the precaution of using an I2C voltage level converter, which is advised anyway incase of peripherals stepping the voltage back up to 5 volts.

 

The problem is that I am a rank beginner and, as Amazon don’t seem to have any suppliers, I’m a bit lost! Does Dronebot Workshop supply components or does anyone know any suppliers in the UK?


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byron
(@byron)
Reputable Member
Joined: 1 year ago
Posts: 307
2020-06-09 9:16 pm  

@bill21

a google of level shifter will bring up a bunch of suppliers.  Below is a link to one.

https://shop.pimoroni.com/products/adafruit-4-channel-i2c-safe-bi-directional-logic-level-converter


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Macoofer
(@macoofer)
Eminent Member
Joined: 3 months ago
Posts: 28
2020-06-10 10:01 am  

@bill21

 

I get quite a few parts from a supplier in my country, which also ships to other countries:

 

https://www.tinytronics.nl/shop/en/dc-dc-converters/level-converters/spi-i2c-uart-bi-directional-logic-level-converter-4-channel

 

If you are less in a hurry, you could consider buying a collection of modules and such from China (AliExpress)

It takes a few weeks to arrive but the prices are sometimes downto 1/10th of what I pay locally (for the exact same item, as they originally come from the same manufacturer) 

 

In general, try and look if there are any semi-local electronics stores around in your country (Like the one Bill has around the corner of his house) it sometimes take a bit longer to find them on the internet, but they typically have a much larger range of items to sell and at a far better price too.

 

Another place to look is Banggood.com   Most of their items are shipped from China too, but in some cases they ship it from the UK-Warehouses

 

Hope this helps,

 

Macoofer


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triform
(@triform)
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Joined: 1 year ago
Posts: 325
2020-06-10 6:07 pm  

@bill21

Since you are in the UK, I would try https://thepihut.com/


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Bill21
(@bill21)
Active Member
Joined: 2 months ago
Posts: 16
2020-06-11 1:54 pm  

Thanks folks.

I have the part on order. It's a 4 channel instead of a 2 channel version. But that may give me some versatility with the project farther down the line. Thanks again for your help.

Bill21


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