Asia 915 MHz、EU 433MHz、North America 868 MHz、周波数違いをいつもどれを買うか迷う。
- ESP32-Paxcounter | LoRaWAN Device Repository
- GitHub - cyberman54/ESP32-Paxcounter: Wifi & BLE driven passenger flow metering with cheap ESP32 boards
- Lilygo®Ttgo ESP32 Paxcounter LoRa32 V2.1 1.6.1バージョン433/868/915mhz lora ESP 32 oled 0.96インチsdカードbluetooth無線lanモジュール|Circuits| - AliExpress
- Shenzhen Xin Yuan Electronic Technology Co., Ltd