The knob display, fully dimensioned in its Made-in-China listing: a Ø53.28 mm active circle in a 56.18×59.71 mm outline only 2.22 mm thick, with a customised FPC — the detail that decides whether a rotary control assembles cleanly, because the flex must route past the shaft and detent mechanism. ST7701 over SPI-RGB keeps both simple hosts and richer controllers in play.
Specifications
| Size | 2.1 inch (round) |
| Resolution | 480 × 480 |
| Driver IC | ST7701 |
| Interface | SPI-RGB |
| Active area | Ø 53.28 mm |
| Outline | 56.18 × 59.71 × 2.22 mm |
| FPC | Customised FPC (per listing title) |
| Minimum order | 2 pcs |
| Listing source | Made-in-China audited store listing (parameter set) |
| Inspection | 100% visual and functional before shipment |
About this module
The module is a standard catalogue part, documented on the platform listing named below and in the production catalogue. Standard in this range means the glass, driver pairing and interface are fixed and repeatable — what varies between projects is the surrounding configuration: FPC length and exit direction, backlight brightness level, touch stack where offered, and cover lens. Those options are frozen at drawing stage, which is why the first deliverable in any project is the drawing (about 3 days), not a quotation spreadsheet.
Electrically, integration follows the driver IC's standard initialisation sequence; our documentation set for platform models covers the mechanical drawing and interface definition your hardware team needs. If your host is an MCU-class part, confirm the interface and framebuffer strategy before layout — the interface pages and the selection guide on the blog work through that decision in detail. Every unit is 100% visually and functionally inspected before shipment.
Where this module is used
- Smart knobs and thermostats
- Audio and appliance rotary controls
- Circular gauges
Ordering and lead times
Minimum order for this model is 2 pcs. The project rhythm follows the audited FAQ: drawings in about 3 days, samples in about 2 weeks, mass production in about 5–6 weeks. Production quotations are issued per configuration — send the model name and quantity to [email protected] or use the form below.
FAQ
What is the minimum order quantity?
This model lists at 2 pcs. Standard models across the range mostly start at 2 pieces, which keeps evaluation cheap; custom and tooled projects are quoted per design.
Can the module be customised?
Yes — FPC, backlight level, interface variant and (on TFT models) touch and cover lens are configured around the standard core. See the custom LCD page for the menu and process.
What are the lead times?
Per the audited FAQ: drawings in about 3 days, samples in about 2 weeks, mass production in about 5–6 weeks.
Related models
Send an Inquiry
Tell us the size, resolution, interface and quantity — we reply with the matching platform model or the custom route, drawings first.