# M5Stack Dial

> A rotary-knob ESP32-S3 device with a round touchscreen and a 13.56 MHz RFID reader.

- **Category:** RFID & NFC
- **Availability:** Listed by maker
- **Price:** US$34.90, checked 2026-09-18
- **Good for:** A knob-driven RFID and control panel you can program.
- **You'll need:** 13.56 MHz tags you own.
- **Trade-off:** High-frequency RFID only; no low-frequency.
- **Page:** https://gadgets.sh/devices/m5stack-dial/

## Where to buy

| Shop | Status | Link |
|---|---|---|
| M5Stack | Orderable | https://shop.m5stack.com/products/m5stack-dial-v1-1?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=m5stack-dial&utm_content=api |
| Amazon | Orderable | https://www.amazon.com/dp/B0F4KGF2ZM?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=m5stack-dial&utm_content=api |

## Blueprint

**Schematics published.** M5Stack publishes a schematic PDF and 3D case STL for Dial; no PCB source or BOM.

### Design files

- schematic: [M5Dial schematic (PDF)](https://m5stack-doc.oss-cn-shenzhen.aliyuncs.com/499/Sch_M5Dial.pdf) (PDF)
- 3d-model: [Dial v1.1 case structure (STL)](https://github.com/m5stack/M5_Hardware/blob/master/Products/K130-V11_Dial_v1.1/Structures/Dial_v1.1.stl) (STL)

### Source repositories

- [m5stack/M5Dial](https://github.com/m5stack/M5Dial) — firmware, ★84
- [m5stack/M5_Hardware](https://github.com/m5stack/M5_Hardware) — hardware, MIT, ★330

### Key parts

| Part | Role | Datasheet |
|---|---|---|
| ESP32-S3FN8 | MCU (dual-core LX7 240 MHz) | https://www.espressif.com/sites/default/files/documentation/esp32-s3_datasheet_en.pdf |
| GC9A01 | display driver (1.28" round TFT) | https://www.mouser.com/datasheet/2/1108/GC9A01A-2481900.pdf |
| WS1850S | RFID reader IC (13.56 MHz) | https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/products/core/M5Dial/WS1850S.PDF |
| BM8563 | RTC | https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/BM8563_V1.1_cn.pdf |

_Notes:_ Confirmed via WebFetch of docs.m5stack.com/en/core/M5Dial and curl HEAD 200 on all links. Product listed is 'v1.1'; STL path is the v1.1-specific structure file in m5stack/M5_Hardware.

### Raw source files

Direct links an agent or KiCad can open (the viewer on the page reads the same files).

- 3D model (STL, 2.9 MB): [Dial v1.1 case structure (STL)](https://raw.githubusercontent.com/m5stack/M5_Hardware/master/Products/K130-V11_Dial_v1.1/Structures/Dial_v1.1.stl)

## Specifications

### Core hardware

| | |
|---|---|
| Processor and memory | ESP32-S3FN8 dual-core LX7 240 MHz · 8 MB flash |
| Display | 1.28″ round TFT touch · 240 × 240 (GC9A01, FT3267) |
| Radios | 2.4 GHz Wi-Fi · RFID WS1850S at 13.56 MHz (ISO/IEC 14443 A/B) |
| Power | DC 6–36 V wide input, battery socket |

### Details from the product page

| | |
|---|---|
| Input | Rotary encoder, 16 positions / 64 pulses per turn |
| RFID | WS1850S reader, 13.56 MHz |
| Feedback | 80 dB buzzer |
| Size | 51 × 51 × 32 mm · 46 g |

### Buying

| | |
|---|---|
| Price | US$34.90 on shop.m5stack.com |
| Availability | In stock on the day of review |

## Firmware & community

- [M5Dial Library](https://github.com/m5stack/M5Dial) — Official drivers for the rotary encoder, 1.28-inch round touch display, RFID reader, and built-in RTC.

## Documentation

- [Maker product page](https://shop.m5stack.com/products/m5stack-dial-v1-1)
- [M5Stack documentation](https://docs.m5stack.com/)

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Source: gadgets.sh · https://gadgets.sh/devices/m5stack-dial/ · JSON: https://gadgets.sh/api/v1/devices/m5stack-dial.json