2.4 GHz radio module, up to 2 Mbps, SPI
| Supply | 1.9–3.6 V |
| Radio | 2.4 GHz ISM, 250 kbps–2 Mbps |
| Bands | 2.4 GHz |
| Interface | SPI |
Wi-Fi + Bluetooth module, dual-core, 4 MB flash
| Supply | 3.0–3.6 V |
| Radio | Wi-Fi 2.4 GHz, BT 4.2 |
| Flash | 4 MB |
GSM/GPRS module, quad-band, SMS and data
| Supply | 3.4–4.4 V |
| Bands | 850/900/1800/1900 |
| Interface | UART |
Wi-Fi + Bluetooth LE module, RISC-V, 4 MB flash
| Supply | 3.0–3.6 V |
| Radio | Wi-Fi 2.4 GHz, BLE 5 |
| Flash | 4 MB |
Wi-Fi + Bluetooth LE module, dual-core, 8 MB flash, 8 MB PSRAM
| Supply | 3.0–3.6 V |
| Radio | Wi-Fi 2.4 GHz, BLE 5 |
| Flash | 8 MB + 8 MB PSRAM |
Ultrasonic distance sensor, 2–400 cm
| Supply | 5 V |
| Interface | Trigger / echo |
| Range | 2–400 cm |
ESP32-C3 RISC-V development board, Wi-Fi + BLE 5
| Radio | Wi-Fi 2.4 GHz, BLE 5 |
| Flash | 4 MB |
| MCU | ESP32-C3, RISC-V, 160 MHz |
Digital ambient light sensor, 1–65535 lx
| Supply | 3–5 V |
| Interface | I²C |
| Range | 1–65535 lx |
ATmega32U4 board with native USB, 5 V / 16 MHz
| Flash | 32 KB |
| MCU | ATmega32U4, 16 MHz |
3-axis digital accelerometer, ±16 g, 13-bit
| Supply | 3–5 V |
| Interface | I²C, SPI |
| Range | ±2/±4/±8/±16 g |
