ESP32-S3 SuperMini: specs
A very small third-party development board built around an ESP32-S3 series chip with Wi-Fi and Bluetooth LE.
Specs
| Spec | Value | Source |
|---|---|---|
| Supply voltage (chip) | 3.0 V to 3.6 V recommended (3.3 V typical) | source Table 5-2 Recommended Operating Conditions (p.64) |
| Recommended supply current (single supply) | 500 mA or more | source Table 5-2 note 4 (p.64) |
| Wireless | 2.4 GHz Wi-Fi (IEEE 802.11b/g/n) and Bluetooth 5 (LE) | source Cover page (p.1) |
| CPU | Xtensa 32-bit LX7 dual-core | source Cover page / Product Overview (p.1) |
| GPIO count (chip) | 45 GPIOs on the chip (the board brings out fewer) | source Cover page (p.1) |
| Pin source current | 40 mA typ per pin (VDD 3.3 V, VOH >= 2.64 V, PAD_DRIVER = 3) | source Table 5-4 DC Characteristics (p.65) |
| Pin sink current | 28 mA typ per pin (VDD 3.3 V, VOL = 0.495 V, PAD_DRIVER = 3) | source Table 5-4 DC Characteristics (p.65) |
| Input high level VIH | 0.75 x VDD min, VDD + 0.3 V max | source Table 5-4 DC Characteristics (p.65) |
Power
| Value | Source | |
|---|---|---|
| Supply | 3.0 V to 3.6 V at the chip | source Table 5-2 (p.64), Table 5-7 (p.66) |
| Current | Wi-Fi peak TX 340 mA (802.11b 1 Mbps, 21 dBm); RX peak 88 mA (802.11b/g/n HT20) | source Table 5-2 (p.64), Table 5-7 (p.66) |
Pinout
We don't publish a pin table for this part: no official source we could verify gives one. Check the labels printed on your module, and see the notes below.
The SuperMini is a third-party board with no official pinout or schematic found. Only the ESP32-S3 chip datasheet applies; board pin labels, regulator and USB wiring are not covered.
Build with it
Project ideas for the ESP32-S3 SuperMini. Each link opens Soldr with the prompt filled in; Soldr assigns the pins, checks power and shows how to wire every part.
- Bluetooth plant monitor: The analog soil sensor goes to an ADC-capable pin; a learning project, calibrate dry and wet readings yourself.
- Tiny motion logger: The MPU6050 module talks I2C; check that the module logic level is 3.3 V compatible before connecting.
- Desk weather display: DHT22 on one GPIO and the OLED on I2C, both run from the board 3.3 V.
- Light level logger: A learning project reading the module analog output on an ADC pin; the module output must stay at or below 3.3 V.
Common mistakes
- Do not feed 5 V into a GPIO: the chip input high level maximum is VDD + 0.3 V (source: link, Table 5-4, p.65).
- The datasheet recommends a single supply that can deliver 500 mA or more (source: link, Table 5-2 note 4, p.64).
Not covered by the official source
- No official SuperMini document: pinout, USB, regulator, flash/PSRAM size and exact chip variant are unknown.
- Chip temperature range depends on the variant (Table 1-1), so it is not given.
Sources
- link (ESP32-S3 Series Datasheet v2.2, Espressif)