Cutting a jumper on the PyPortal

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Tom_Henry
 
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Cutting a jumper on the PyPortal

Post by Tom_Henry »

I have a question about Adafruit’s PyPortal.

I am referencing Adafruit’s Pinouts page for my question:

https://learn.adafruit.com/adafruit-pyportal/pinouts

Also, see my attached screenshot from that page.

Under the I2C heading, it says, “There is a 4-pin JST I2C connector in the center on the right, that is STEMMA and Grove compatible. The I2C has pullups to 3.3V power and is connected to the ADT7410 already.

The I2C connector defaults to 5V. There is a jumper you can cut or solder to change it between 5V and 3V.

I am not sure what to cut or solder to make the change from 5V to 3V.

Can you give me more clear directions on what to cut or solder?

Where I am going with this, I will be using Adafruit’s 4-pin cable, product 4424. I will be connecting this using various sensor using the Qwiic connectors on the sensors.

Thank you,

Tom Henry
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I2C Connector.png
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dastels
 
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Re: Cutting a jumper on the PyPortal

Post by dastels »

There is a set of 3 square pads just behind the I2C connector. The middle pad is labelled "V", the "bottom" one is labelled "5" (i.e. 5v) and is connected by a thin trace to the "V" pad. The "top" pad is labelled "3" (i.e. 3.3v). Cir the thin trace connecting "V" and "5" and use solder to short together "v" and "3". That will switch the voltage on the I2C connecter (red wire on an Adafruit 4-pin JST cable) from 5v to 3.3v.

Dave

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Tom_Henry
 
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Re: Cutting a jumper on the PyPortal

Post by Tom_Henry »

Dave,

Excellent directions, thank you.

Worked perfect.

Tom Henry

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