Qwiic Micro OLED Hookup Guide
Englandsaurus 
Hardware Overview
Listed below are some of the operating ranges and characteristics of the Qwiic Micro OLED.
| Characteristic | Range |
|---|---|
| Voltage | 3.3V |
| Temperature | -40°C to 85°C |
| I2C Address | 0X3D (Default) or 0X3C (Closed Jumper) |
Pins
Power and I2C pins are broken out to the 1x4 PTH pins as well as the two horizontal Qwiic connectors.
| Pin | Description | Direction |
|---|---|---|
| GND | Ground | In |
| 3.3V | Power | In |
| SDA | Data | In |
| SCL | Clock | In |
Jumpers
There are several jumpers on board that can be changed to facilitate several different functions. The first of which is the I2C pull-up jumper to disable the 2.2kΩ pull up resistors on the I2C data and clock lines, highlighted below. If multiple boards are connected to the I2C bus, the equivalent resistance goes down, increasing your pull up strength. If multiple boards are connected on the same bus, make sure only one board has the pull-up resistors connected.
The ADDR jumper (highlighted below) can be used to change the I2C address of the board. The default jumper is open by default, pulling the address pin high and giving us an I2C address of 0X3D. Closing this jumper will ground the address pin, giving us an I2C address of 0X3C.
Board Dimensions
The overall board size is 1.08" x 1.17". There is a v-score for users that want to remove the mounting holes.
