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bluetooth:notes_on_hc-05_module [2018/03/03 08:20] ko4bb |
bluetooth:notes_on_hc-05_module [2018/03/03 08:22] ko4bb |
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- | === HC-05 Module === | + | === HC-05 Bluetooth Module === |
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+ | The HC-05 Bluetooth module is widely available and inexpensive. | ||
- | The HC-05 module is widely available and inexpensive. \\ | ||
A lot of information is available on the Internet so I am not going to repeat everything here, just some notes and observations that may not be obvious even after plenty of Googling. | A lot of information is available on the Internet so I am not going to repeat everything here, just some notes and observations that may not be obvious even after plenty of Googling. | ||
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* There are 2 ways to put the module in command mode (so that it responds to AT commands): | * There are 2 ways to put the module in command mode (so that it responds to AT commands): | ||
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=== A note about using multiple HC-05 modules with an Android device and renaming your HC-05s === | === A note about using multiple HC-05 modules with an Android device and renaming your HC-05s === | ||
- | Since all the modules come with the same name of "HC-05", it may be difficult to work with multiple modules at the same time. | + | Since all the modules come with the same name of "HC-05", it may be difficult to work with multiple modules at the same time because if you pair multiple HC-05 with one Android phone or tablet, they will all show up as HC-05. How do you know which is which? |
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- | If you pair multiple HC-05 with one Android phone or tablet, they will all show up as HC-05... How do you know which is which? | + | |
This is compounded by the fact that the HC-05 can only be paired with one master at a time. Once you pair an HC-05 with a device, it will forget whatever device it may have been paired with previously. However, the device it was paired with previously may remember it yet it will not be able to reconnect unless you "forget" it and pair again. This can get aggravating, even more so if you try to explain that to a non-technical person. | This is compounded by the fact that the HC-05 can only be paired with one master at a time. Once you pair an HC-05 with a device, it will forget whatever device it may have been paired with previously. However, the device it was paired with previously may remember it yet it will not be able to reconnect unless you "forget" it and pair again. This can get aggravating, even more so if you try to explain that to a non-technical person. |