ESP32-MINI-1 vs ESP32-WROOM-32E
ESP32-MINI-1
MINI · ESP32 · Active
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ESP32-WROOM-32E
WROOM · ESP32 · Active
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Figures here are compiled from Espressif's official datasheets, with the source linked on each page. Mistakes are possible, so if something looks off, please report it.
Which should you choose?
Both are built on the same ESP32 SoC, so CPU and radios are identical; the choice is about memory, form factor and antenna.
Choose ESP32-MINI-1 if you need
- more usable GPIO (28 vs 26)
- smaller footprint (13.2×19 mm)
Choose ESP32-WROOM-32E if you need
- PSRAM for camera frames, audio buffers and LVGL/large displays
- larger flash option (up to 16 MB) for bigger firmware and OTA
Size, to scale
- ESP32-MINI-1: 13.2×19 mm
- ESP32-WROOM-32E: 18×25.5 mm
Spec differences at a glance
- Flash options: ESP32-MINI-1 4 MB · ESP32-WROOM-32E 4 / 8 / 16 MB
- PSRAM: ESP32-MINI-1 None · ESP32-WROOM-32E 2 MB (quad)
- Usable GPIO: ESP32-MINI-1 28 · ESP32-WROOM-32E 26
- Dimensions: ESP32-MINI-1 13.2 × 19 × 2.4 mm · ESP32-WROOM-32E 18 × 25.5 × 3.1 mm
- Pin count: ESP32-MINI-1 34 · ESP32-WROOM-32E 38
Compute & memory
⚑ flag an error| ESP32-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| CPU | Xtensa LX6, 2-core | Xtensa LX6, 2-core |
| Max clock | 240 MHz | 240 MHz |
| SRAM | 520 KB | 520 KB |
| ROM | 448 KB | 448 KB |
| Flash options≠ | 4 MB | 4 / 8 / 16 MB |
| PSRAM≠ | None | 2 MB (quad) |
| Co-processor | ULP-FSM | ULP-FSM |
Wireless
⚑ flag an error| ESP32-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Wi-Fi | Wi-Fi 4 | Wi-Fi 4 |
| Wi-Fi bands | 2.4GHz | 2.4GHz |
| Bluetooth | BT Classic + BLE | BT Classic + BLE |
| 802.15.4 (Thread/Zigbee) | No | No |
| Antenna | PCB | PCB |
Peripherals & I/O
⚑ flag an error| ESP32-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Usable GPIO≠ | 28 | 26 |
| ADC | 18× 12-bit | 18× 12-bit |
| USB | USB-Serial(external) | USB-Serial(external) |
| UART / SPI / I²C / I²S | 3 / 2 / 2 / 2 | 3 / 2 / 2 / 2 |
| TWAI (CAN) | Yes | Yes |
| SD/MMC | Yes | Yes |
| Ethernet MAC | Yes | Yes |
| Touch | 10 | 10 |
Power
⚑ flag an error| ESP32-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Operating voltage | 3.0-3.6 V | 3.0-3.6 V |
| Deep sleep | 10 µA | 10 µA |
Physical
⚑ flag an error| ESP32-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Dimensions≠ | 13.2 × 19 × 2.4 mm | 18 × 25.5 × 3.1 mm |
| Pin count≠ | 34 | 38 |
| Temp range | -40 to 85 °C | -40 to 85 °C |
| Mounting | SMD castellated | SMD castellated |
| Lifecycle | Active | Active |
Security
⚑ flag an error| ESP32-MINI-1 | ESP32-WROOM-32E | |
|---|---|---|
| Secure boot | Yes | Yes |
| Flash encryption | Yes | Yes |
| Crypto | AES, SHA, RSA, RNG | AES, SHA, RSA, RNG |
| Digital signature | No | No |
| TRNG | Yes | Yes |