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'''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.<br />
<br />
== Summary ==<br />
Concise technical overview of the Waveshare 1.3-inch OLED module with SPI/I2C interfaces and SH1106 driver chip.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL10444 WSAL10444 – 1.3inch OLED (A)]<br />
<br />
== Technical overview ==<br />
* Resolution 128×64 pixels; display size 14.7 mm × 29.42 mm; blue monochrome.<br />
* Operating voltage 3.3 V/5 V; driver chip SH1106.<br />
* Three interfaces available: 3-wire SPI, 4-wire SPI, and I2C, switchable via two resistors (BS0/BS1) on the module's back side.<br />
* Default configuration is 4-wire SPI (BS0=0, BS1=0).<br />
* 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.<br />
* 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.<br />
* Enable SPI and I2C via raspi-config under Interfacing Options; a reboot is required afterwards.<br />
* C test demo: run in the c directory, then execute sudo make -j 8 and sudo ./main 1.3 for this module.<br />
* Python demo: cd python/example, then run sudo python3 OLED_1in3_test.py.<br />
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'''Commands and examples – verify before use:''' <br />
<syntaxhighlight lang="text"><br />
sudo raspi-config<br />
sudo reboot<br />
sudo make clean && sudo make -j 8<br />
sudo ./main 1.3<br />
cd python/example && sudo python3 OLED_1in3_test.py<br />
</syntaxhighlight><br />
<br />
== Notes and version constraints ==<br />
* The exact pinout and resistor configuration (BS0/BS1) depend on the chosen communication method – verify before soldering.<br />
* The program defaults to SPI mode; switching to I2C requires modifying DEV_Config.h.<br />
* When using STM32, the I2C demo uses analog I2C pins – the connection must be adjusted accordingly.<br />
* Do not display the same image for extended periods, as it can cause afterimages and damage the OLED.<br />
* Take care not to reverse-connect the power supply.<br />
* Lifespan and current-draw figures come from the FAQ and apply under normal conditions; other environments require human confirmation.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/1.3inch_OLED_(A) 1.3inch OLED (A) - Waveshare Wiki]<br />
* Source revision: 110136<br />
* Captured: 2026-08-29T10:01:47+00:00<br />
* SHA-256: <code>f64f95b51ae2f300663dfe3cd909db82c082a7d9607f0f8864fc72d078a46603</code></div>JWTechPublisher