None (External USB-to-UART Required)
1 deviceProducts without a built-in USB port that require an external USB-to-UART bridge for programming and serial communication.

Heltec HT-CT62
module
Ultra-compact ESP32-C3 + SX1262 LoRa/LoRaWAN module with WiFi and BLE, designed for SMT integration into IoT devices. Features 10uA deep sleep, +21dBm TX power, and Meshtastic compatibility in a tiny
RISC-V RV32IMC single-core @ 160MHz, HW crypto (AES-128256, SHA, RSA, HMAC, ECDSA)400KB SRAM4MB SiPWiFi 802.11 b/g/n 2.4GHzBLE BLE 5.0
~$7View
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