Mình có test module sim 4G A7680C, thấy đèn tín hiệu nháy nhưng mình gửi lệnh AT thì ko có phản hồi. Các bác nào dùng rồi cho em xin ít kinh nghiệm xử lý ạ | Huy Chelsea
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Sóng 2G sắp bị tắt rồi, còn chờ giờ nữa mà không chuyển sang dùng ngay Module SIM 4G A7680C nào ae ôi. #Banlinhkien #diy #HangHOTHe2024 #IoT #arduino #esp #sensor #project #reelsviral | Banlinhkien
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