Pros: Has a functional LED pin that can be used to monitor connection state Low power - 3.3v Small footprint Cons: Documentation can be a bit of a pain, (search for the CZ-HC-05 code on the back the datasheets are available) Other: These are the only units I could get Arduino code to upload to the boards ... Read more
- Simple device has the additional pins which make it easier to configure then the ones with only 4 pins
- Lots of documentation available online
- Compatible with arduino libraries for bluetooth
- Allows for in process altering of settings (master/slave, name, pairing etc).
- Relatively cheap
... Read more
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