2.9 inch Label Board bw: Difference between revisions
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|intro=Label, ESP32, SSD1680, SPI | |intro=Label, ESP32, SSD1680, SPI | ||
|highlights= | |highlights=1. The 2.9 inch Label Board is a 2.9-inch black & white E-Ink electronic shelf label (ESL) based on the ESP32-WROOM-32E. It integrates a WiFi access point and a web-based editor, so you can design product price tags, generate EAN-13 barcodes, and send photos from your phone's album straight to the e-paper — without installing any app. Labels can optionally be archived to a TF card for redundant storage. | ||
2. The e-paper display retains its image even when power is removed. Energy is consumed only while refreshing; a static image can persist for years. This makes the A32 ideal for supermarkets, convenience stores and warehouses where content stays on display for long periods but changes only occasionally. | |||
|hardware=The expansion board routes display bus, touch signals, and SD card interface to standard headers. Confirm controller board logic level before use. | |hardware=The expansion board routes display bus, touch signals, and SD card interface to standard headers. Confirm controller board logic level before use. | ||
|usage=[[File:2.9inch-photo-600-300-1.jpg|center|thumb|600x600px]] | |usage=[[File:2.9inch-photo-600-300-1.jpg|center|thumb|600x600px]] | ||
Revision as of 15:04, 1 September 2026
ESP32
Introduction
1. The 2.9 inch Label Board is a 2.9-inch black & white E-Ink electronic shelf label (ESL) based on the ESP32-WROOM-32E. It integrates a WiFi access point and a web-based editor, so you can design product price tags, generate EAN-13 barcodes, and send photos from your phone's album straight to the e-paper — without installing any app. Labels can optionally be archived to a TF card for redundant storage.
2. The e-paper display retains its image even when power is removed. Energy is consumed only while refreshing; a static image can persist for years. This makes the A32 ideal for supermarkets, convenience stores and warehouses where content stays on display for long periods but changes only occasionally.
Specifications
Specifications to be added.
Hardware
The expansion board routes display bus, touch signals, and SD card interface to standard headers. Confirm controller board logic level before use.
Size
FAQ
- What if compilation shows insufficient capacity?
- Reduce font and bitmap resources, or choose a controller with more capacity.
- What if colors are abnormal?
- Check driver model, color order, and initialization orientation settings.
Downloads