Featured project outline
ESP32-C3 Pocket OLED Display
Build a compact, portable status display using a Seeed Studio XIAO ESP32-C3, a small OLED screen, perfboard, and a rechargeable battery. The selected display is 1.32 inches, close to the 1.2-inch size described in the video.
The finished build
Finished-build photo coming soon
Reference photo for a tiny hanging display. The linked parts are a proposed build, not confirmed identification of the exact hardware in the image.
Build outline
- Choose the display interface (I2C or SPI) and confirm its configuration. Wire the OLED to the XIAO's matching pins using 3.3V logic.
- Mount the XIAO and display on perfboard. The board does not plug directly into the perfboard, so use appropriate headers or short soldered wires and insulate exposed connections.
- Install firmware that draws your desired status icons or information, then test the display and controller over USB before adding a battery.
- Before connecting the battery, verify the XIAO charger's charge-termination voltage against the battery's maximum charge voltage, and check connector polarity. If you cannot verify a compatible pairing, do not charge that pack from the board.
- After confirming the power setup, secure the battery and electronics in an insulated case or mount. Check for stable operation, secure wiring, and unusual heat before carrying the project.
Parts list & cost breakdown
Prices vary by retailer, model, and availability. Check each listing before buying.
| Part / quantity | Selected product | Primary line cost |
|---|---|---|
| ESP32-C3 controller Qty 1 | Seeed Studio XIAO ESP32-C3 Seeed Studio Check listing ↗ $4.99 each | $4.99 |
| OLED display Qty 1 | Waveshare 1.32-inch OLED Display Module Waveshare Check listing ↗ $5.49 each | $5.49 |
| Perfboard / prototype base Qty 1 | ELEGOO double-sided FR-4 prototype PCB kit Amazon Check listing ↗ $9.99 each · See Amazon for exact pricing | $9.99 · See Amazon for exact pricing |
| Rechargeable battery Qty 1 | AKZYTUE 3.7V 1000mAh LiPo battery Amazon Check listing ↗ $8.49 each · See Amazon for exact pricing | $8.49 · See Amazon for exact pricing |
Primary parts subtotal: $28.96
0 part prices vary by seller, model, and availability.
Shipping, tax, tools, and optional extras are not included. Check retailer listings before buying.
0 part prices vary by seller, model, and availability.
Shipping, tax, tools, and optional extras are not included. Check retailer listings before buying.
Some product links may earn Cortech a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Read our affiliate disclosure.