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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 />
The Waveshare 1.3-inch OLED Module (C) is a 64×128-pixel display driven by an SH1107 controller. It supports 4-wire SPI and I2C interfaces, operates at 3.3 V, and is intended for developers interfacing it with Raspberry Pi, STM32, or Arduino.<br />
<br />
== Related products at JW Tech ==<br />
* [https://shop.jw-tech.eu/p/WSAL18179 WSAL18179 – 64×128, General 1.3inch OLED Display Module]<br />
<br />
== Technical overview ==<br />
* Resolution: 64 × 128 pixels; display area 14.7 × 29.42 mm; pixel size 0.15 × 0.15 mm; module dimensions 30 × 39.5 mm.<br />
* Form factor: black/white monochrome display; the SH1107 controller has 128×128-bit SRAM, of which only half is used for the 64×128 resolution.<br />
* Interfaces: 4-wire SPI (default) and I2C; switching is done via a solderable resistor on the back (IM to GND = SPI, IM to VCC = I2C).<br />
* I2C address: the DC input selects the slave address; when DC = Low, the 7-bit I2C address is 0x3C.<br />
* Pinout: VCC (3.3 V), GND, DIN (MOSI), CLK (SCLK), CS (active low), DC (Data/Command), RST (reset, active low).<br />
* Raspberry Pi wiring: VCC→3.3 V pin, GND→GND, DIN→GPIO19 (SDA), CLK→GPIO23 (SCL), CS→GPIO24 (CE0), DC→GPIO22, RST→GPIO13.<br />
* SPI protocol mode: Mode 3 (CPOL=1, CPHA=1), MSB first; per source, SCL is high in idle state and data transmission starts at the second edge.<br />
* Example commands: use 'sudo raspi-config' to enable SPI/I2C then reboot; choose libraries BCM2835, WiringPi, lgpio or Python packages depending on OS version (Bookworm supports only lgpio).<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<br />
sudo make -j 8<br />
sudo ./main 1.3c<br />
cd python/example<br />
sudo python3 OLED_1in3_c_test.py<br />
</syntaxhighlight><br />
<br />
== Notes and version constraints ==<br />
* Switching between SPI and I2C requires soldering on the module’s back side – verify the exact solder point against the datasheet before soldering.<br />
* Under Bookworm, BCM2835 and WiringPi are unavailable; only lgpio can be installed.<br />
* Displaying the same image for extended periods can cause afterimages and damage the OLED – vary displayed content regularly.<br />
* Before powering up, ensure correct polarity (no reverse power); the module requires active program control since there is no backlight.<br />
<br />
== Source and revision record ==<br />
* [https://www.waveshare.com/wiki/1.3inch_OLED_Module_(C) 1.3inch OLED Module (C) - Waveshare Wiki]<br />
* Source revision: 86679<br />
* Captured: 2026-09-01T03:10:44+00:00<br />
* SHA-256: <code>7b8b2a55d0e81247ad91f839978e6139f69f9ba93c226a6d273d40d7e36f9aaa</code></div>JWTechPublisher