Due to high demand expect some shipping delays at this time, orders may not ship for 3-4 business days. On MLK Day no orders will be shipped.
0

Proper voltage for https://www.adafruit.com/product/3130
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Proper voltage for https://www.adafruit.com/product/3130

by cjnaz on Wed Dec 08, 2021 2:40 am

The instructions at https://learn.adafruit.com/14-segment-a ... ng/pinouts says 3V or 3.3V, but the chip on board - HT16K33 - requires 4.5V to 5.5V.

What is the proper VDD to supply to this module? If ~5V is required, then please update the documentation.

regards,
cjn

cjnaz
 
Posts: 2
Joined: Wed Dec 08, 2021 2:25 am

Re: Proper voltage for https://www.adafruit.com/product/3130

by dastels on Wed Dec 08, 2021 9:35 am

Are you having problems with it? Product 3130 is a FeatherWing so it just plugs onto a feather and should just work. I realize that the chip specs 4.5v-5.5v but it would seem that it runs at 3.3v as well.

Dave

dastels
 
Posts: 8397
Joined: Tue Oct 20, 2015 3:22 pm

Re: Proper voltage for https://www.adafruit.com/product/3130

by cjnaz on Wed Dec 08, 2021 12:08 pm

I'll be running in on a custom board from a RPi. I think I'll breadboard it up and see how it does on 3.3V in my application. I may put it down with some level shifters on the I2C pins and run it on 5V.

cjnaz
 
Posts: 2
Joined: Wed Dec 08, 2021 2:25 am

Please be positive and constructive with your questions and comments.