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Straight from the datasheets. Need a figure that isn’t here? Ask.
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Ready before you are.
| SparkStart here. | SprintReady before you are. | IndusFor your toughest challenges. | FlintSmall board. Long reach. | |
|---|---|---|---|---|
| The chip | ||||
| MCU | ESP32‑S3 | ESP32‑S3 | STM32G484 | ESP8266EX |
| Clock | 240 MHz | 240 MHz | 170 MHz | 80–160 MHz |
| Wireless | Wi‑Fi 4 + BLE 5.0 | Wi‑Fi 4 + BLE 5.0 | —Not on this board | Wi‑Fi 4 |
| GPIO | 32 | 16 | 40 | 12 |
| On the board | ||||
| Board size | On request | On request | 35 × 56 mm | 50 × 30 mm |
| Sensors on board | —Not on this board | DHT11, LDR, IR, buzzer | —Not on this board | —Not on this board |
| Battery charging | —Not on this board | 1S Li‑ion, 1 A | —Not on this board | —Not on this board |
| For hard jobs | ||||
| CAN | CAN (TWAI) | CAN (TWAI) | 3× CAN FD, 8 Mbit/s | —Not on this board |
| Hardware crypto | —Not on this board | —Not on this board | AES‑256 | —Not on this board |
| Protection | ESD, reverse polarity | ESD, reverse polarity, thermal | ESD ±15 kV, reverse polarity, over‑current, thermal | Reverse polarity, over‑current, over‑temp |
| Debug | USB | USB | USB + SWD | USB |
| Temperature | Commercial | Commercial | –40 to +85 °C | –40 to +85 °C |
| Best for | ||||
| Best for | Learning, first projects | Sensor & IoT projects | Products, motor control, CAN networks | Battery Wi‑Fi nodes |