Details
I've used this screen in my timer glove project and it's featured in the book Ultimate Guide to Informed Wearables. It's one of my go-to displays for wearable builds.
Specs
- Display: 0.96" OLED, 128 × 64 pixels
- Controller: SSD1306
- Interface: I2C (IIC) — only SDA + SCL needed
- Voltage: 3.3V – 5V
- PCB: Black, 25 × 25mm
- I2C Address: 0x78 (default) or 0x7A (via resistor swap on back)
Pin Definitions
- GND — Ground
- VCC — 3.3V to 5V power
- SCL — I2C Clock
- SDA — I2C Data
Prefer a single colour?
OLED vs E-Paper: Which Display Is Right for Your Wearable?
Both are low-power display options popular in e-textiles and wearables, but they behave very differently in practice. Here's how this OLED compares to our WeAct 2.13" E-Paper Module:
| Trait | This OLED (SSD1306) | WeAct 2.13" E-Paper |
|---|---|---|
| Sunlight readability | Emissive display — struggles in direct sunlight; contrast drops significantly outdoors | Reflective display — reads clearly in full sunlight with no backlight needed |
| Update speed | Near-instant (<1 ms pixel response); ideal for animations, counters, and live sensor data | Full refresh ~2 s; partial refresh faster but with artifacts — not suitable for live updates |
| Refresh artifacts / ghosting | None — pixels switch cleanly with no visible ghosting | Full refresh eliminates ghosting; partial refresh leaves faint ghost images over time |
| Standby power | ~0.08 mA display off (sleep mode per SSD1306 datasheet); draws ~20 mA when active | ~0 mA once image is written — retains display with zero power (bistable by nature) |
| Colour | Two-tone (yellow top 16 px / blue lower 48 px) — fixed by hardware, not software | Black, white, red (this module); no greyscale |
| Ideal wearable use cases | Real-time feedback: step counters, timers, heart rate, animation, interactive gloves | Static or infrequent data: name badges, trail maps, sleep-mode status, QR codes |
Bottom line: Choose this OLED when your project needs fast, live updates and indoor use. Choose the e-paper module when sunlight readability and zero standby power matter more than refresh speed.









