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FSK 1200baud discrete "modulators". What do you think?

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babysitter:
In the good old times, many mobiles had a way to access them as modems. Even modern smartphones might allow bluetooth tethering, so you basically could use a Serial-over-bluetooth bridge to push data into the network, somehow?

sv3ora:

--- Quote from: babysitter on October 10, 2019, 08:58:52 am ---In the good old times, many mobiles had a way to access them as modems. Even modern smartphones might allow bluetooth tethering, so you basically could use a Serial-over-bluetooth bridge to push data into the network, somehow?

--- End quote ---
It could be done with a usb cable connected to the phone and to the MCU board. a USB capable interface must exist on the board and a special app should be written for the phone. Sorry, too complex to just do a simple low speed serial data transfer... :(

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