# Getting data from sensors + send them it over the REPL/Shell connection (to confirm good working) + transmit over radio
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# Testing the radio reception
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# Going autonomous + add the Lipo
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The code proposed here under has been tested up to 80000 iterations without issue, time when we decided to ends the test :-) .
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Once the script uploaded to your Pico, open the REPL/Shell over the USB-serial (with Thonny, Putty, MPRemote). '''The script can be started with {{fname|import cansat}} from REPL'''.
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You should see the following messages appears on the Serial Monitor.
Where we could see the transmitted messages with the iteration counter, timing and data.
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{{ambox|text=The '''ACK'''nowledgement feature is disabled to avoids latency when waiting ACK message back (which may never comes back in the case of a CanSat in high altitude). }}