I bought this:
https://www.adafruit.com/product/2720
on the basis that the i2c address can easily be changed if needed to.
On receipt of the item / kit, there is a capacitor and a 16 pin IC chip included.
First, where on the back of the OLED is the i2c address changed.
Second, can the display be used without either of the capacitor and IC chip.
And lastly, why are there no pinout markings on the board as there are with other Adafruit OLEDs.
1.54" OLED questions
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Please be positive and constructive with your questions and comments.
- dastels
- Posts: 15667
- Joined: Tue Oct 20, 2015 3:22 pm
Re: 1.54" OLED questions
The cap is included
Read the related guide if you haven't: https://learn.adafruit.com/1-5-and-2-4- ... ay-module/
Also from the guide:
Dave
The chip is a level shifter for use with a 5v board like the Arduino UNO. If you're using a 3.3v board, you don't need it.as we noticed an Arduino may need a little more capacitance on the 3.3V power supply for this big display
Read the related guide if you haven't: https://learn.adafruit.com/1-5-and-2-4- ... ay-module/
Also from the guide:
Finally, as for the lack of markings, this is board is not made by Adafruit, and simply isn't labeled. The guide has all the information on what the connections are.Connect Pin #4 (DC & I2C Addr0) to ground (black wire) to set the I2C address to 0x3C. If this is tied to 3.3V, it will set the I2C address to 0x3D
Dave
- avvy69
- Posts: 31
- Joined: Sun Sep 15, 2019 8:01 am
Re: 1.54" OLED questions
Thank you for the clarification.
I will be using the OLED display with a Pi zero on a 3.3v pin, so I won't need the IC, but the i2c address will be 0x3D. So then connect Pin#4 DC, data/command pin, to ground and that should put the i2c address to 0x3C.
Does that sound right.
I will be using the OLED display with a Pi zero on a 3.3v pin, so I won't need the IC, but the i2c address will be 0x3D. So then connect Pin#4 DC, data/command pin, to ground and that should put the i2c address to 0x3C.
Does that sound right.
- dastels
- Posts: 15667
- Joined: Tue Oct 20, 2015 3:22 pm
Re: 1.54" OLED questions
Correct, you will not need to use the level shifter chip. Put it in your parts cabinet... they can be very handy.
Also correct, connecting DC to ground will put the board at address 0x3C.
Sounds like you're all set.
Dave
Also correct, connecting DC to ground will put the board at address 0x3C.
Sounds like you're all set.
Dave
Please be positive and constructive with your questions and comments.