Dialectical Data
~/workshop $ cat ./inventory/oled-0.96in-i2c-module/README.md

0.96" I2C OLED Display Module (SSD1306-class)

category
Display
qty
1
status
owned / untested
maker
Generic/unbranded (no company name on the board — a very common breakout design sold under dozens of reseller names)
0.96" I2C OLED Display Module (SSD1306-class)

Overview

An assembled OLED breakout: a small blue driver PCB with an I2C address-select solder jumper (0x3C/0x3D, standard SSD1306 addressing) and a display panel attached via a folded FPC ribbon. Alex identified this as a .96“ display — consistent with the board’s I2C address-select layout, which is the common design for the 0.96“/128×64 SSD1306 OLED class (as opposed to the smaller 0.91“ bare panel also newly added to this library, which is 128×32 and unassembled).

Key specs

  • Size: 0.96“ diagonal (per Alex’s identification)
  • Typical for this class (128×64 SSD1306 OLED with I2C address-select jumper), consistent with the board’s own silkscreen but not cross-checked against a chip marking:
    • Resolution: 128×64 pixels
    • Driver IC: SSD1306
    • Interface: I2C, 4-pin (GND, VCC, SCL, SDA)
    • Default I2C address: 0x3C (jumper-selectable to 0x3D via the onboard solder pads, per silkscreen)
    • Supply voltage: 3.3–5V typical for this breakout class (onboard charge-pump regulation is standard for SSD1306 modules)

Pinout

Pin Function
GND Ground
VCC Power (3.3–5V typical)
SCL I2C clock
SDA I2C data

Exact pin order not confirmed from the photo (4-pin header partially obscured) — verify against the board’s own silkscreen labels before wiring, standard convention is GND-VCC-SCL-SDA but reseller boards occasionally reorder this.

Wiring / typical usage

Four wires to the host’s I2C bus: GND, VCC, SCL, SDA, same pattern as the 16x2 I2C LCD already in this library. Default address 0x3C should work out of the box; if a second SSD1306-class display is ever added to the same bus, use the 0x3D solder-jumper option on one of them to avoid an address collision.

Code / libraries

  • Arduino: Adafruit_SSD1306 + Adafruit_GFX, initialize with display.begin(SSD1306_SWITCHCAPVCC, 0x3C).
  • MicroPython: ssd1306 module (ssd1306.SSD1306_I2C(128, 64, i2c)), widely available.
  • If 0x3C doesn’t respond, run an I2C scanner before assuming the address jumper is set differently than expected.

Source material

  • Board silkscreen (IIC ADDRESS SELECT, 0x3C/0x3D jumper pads) read directly from the supplied photo.
  • General 0.96“/128x64 SSD1306 I2C module class specs: UCTRONICS 0.96“ OLED module, Addicore SSD1306 0.96“ I2C OLED — generic class references, this exact reseller board not identified by brand.
  • Product photo: /inventory/oled-0.96in-i2c-module/product-photo.jpg — the actual owned unit (photo-verified silkscreen, address-select pads legible).
  • Local files: see /inventory/oled-0.96in-i2c-module/as-supplied.jpeg

Verification

Board silkscreen (address-select jumper, FPC-mounted panel) read directly from the supplied photo — confirms this is an SSD1306-class I2C OLED breakout design, high confidence. Exact resolution (128×64) and pin order are Inferred from the well-documented 0.96" SSD1306 module class — not independently confirmed by a chip marking or datasheet lookup for this specific unbranded board. Run an I2C scanner and check the actual displayed resolution on first use rather than assuming 128x64 sight unseen.

Notes / gotchas

  • No brand or model number anywhere on the board — if it ever needs replacing, match by the address-select jumper layout and FPC-mounted panel style rather than a specific part number.
  • Distinct from the 0.91“ bare panel also in this library — that one is smaller (128×32), unassembled, and has no driver PCB at all.