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hc 05 - Problem activating HC-05 AT command mode with Arduino Uno Bluetooth shield - Arduino Stack Exchange
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HC-05 zs-040. Some commands only work when pin 34 is HIGH - Networking, Protocols, and Devices - Arduino Forum
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Jdy-34 Spp-c Host Dual-mode 2.4g Bluetooth 4.2 Module 4db Printer Supports Multi-machine Connection Compatible With Hc-05 Hc-06 - Integrated Circuits - AliExpress
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