RT: Ready to start the #iot workshop at Barcelona with @hackaday @helium and @RAKwireless #lorawan wisblocks and ikea air quality sensors! https://t.co/awdkbGg4lt
RT：准备好在巴塞罗那启动物联网研讨会，配备@Hackday@Hemium和@RAKwireless#lorawan wisblocks和宜家空气质量传感器！https://t.co/awdkbGg4lt