Hi, know if I wanted to transmit analogue data between two arduinos: connect sensors to an Arduino Uno (which takes the measurements of the sensors) and then send them to another Arduino which uses them to send them via BLE transmitter
Do you have a question ?
Are you sure that you need to complicate things by using two Arduinos rather than one ?
Convert it to digital; send using standard digital interfaces ...
sorry I wrote it wrong. anyway yes, i want to know how to transmit analogue data between two arduinos, can I use SPI, I2C or serial data? yes, I need to use two Arduino for an experiment that uses analogue data transmission. I also thought that if I put the signal of the first into the analog pin as an output and connect it to an analog read pin of the second Arduino it should work right?
These are all serial interfaces!
How far apart are the two Arduinos?
I2C is certainly not designed for long-distance comms between boards.
(in fact, it's not designed to go off board at all)
SPI & logic-level UART will work over a few metres.
For longer distances, use RS232, RS485, or similar.
Trying to faithfully send analogue data is far more difficult than digital - so use a digital connection, and convert back to analogue at the far end if you really need to.
Why do you use two Arduino´s ?
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