WSAL10444 – 1.3inch OLED (A)/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

Concise technical overview of the Waveshare 1.3-inch OLED module with SPI/I2C interfaces and SH1106 driver chip.

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WSAL10444 – 1.3inch OLED (A)

Technical overview

Resolution 128×64 pixels; display size 14.7 mm × 29.42 mm; blue monochrome.
Operating voltage 3.3 V/5 V; driver chip SH1106.
Three interfaces available: 3-wire SPI, 4-wire SPI, and I2C, switchable via two resistors (BS0/BS1) on the module's back side.
Default configuration is 4-wire SPI (BS0=0, BS1=0).
For I2C operation: connect BS0 to GND and BS1 to VCC (3.3 V); DIN to SDA, CLK to SCL; tying DC to GND gives 7-bit I2C address 0x3C.
Raspberry Pi pin mapping: VCC→3.3 V, GND→GND, DIN→MOSI/SDA, CLK→SCLK/SCL, CS→CE0, D/C→GPIO.6, RES→GPIO.2.
Enable SPI and I2C via raspi-config under Interfacing Options; a reboot is required afterwards.
C test demo: run in the c directory, then execute sudo make -j 8 and sudo ./main 1.3 for this module.
Python demo: cd python/example, then run sudo python3 OLED_1in3_test.py.

Commands and examples – verify before use:

sudo raspi-config
sudo reboot
sudo make clean && sudo make -j 8
sudo ./main 1.3
cd python/example && sudo python3 OLED_1in3_test.py

Notes and version constraints

The exact pinout and resistor configuration (BS0/BS1) depend on the chosen communication method – verify before soldering.
The program defaults to SPI mode; switching to I2C requires modifying DEV_Config.h.
When using STM32, the I2C demo uses analog I2C pins – the connection must be adjusted accordingly.
Do not display the same image for extended periods, as it can cause afterimages and damage the OLED.
Take care not to reverse-connect the power supply.
Lifespan and current-draw figures come from the FAQ and apply under normal conditions; other environments require human confirmation.

Source and revision record

1.3inch OLED (A) - Waveshare Wiki
Source revision: 110136
Captured: 2026-08-29T10:01:47+00:00
SHA-256: f64f95b51ae2f300663dfe3cd909db82c082a7d9607f0f8864fc72d078a46603