I tried to connect my RFM69HCW to Arduino Nano 33 BLE, so that I won't be needing a logic level shifter to downgrade the voltage, since Arduino Nano is already 3.3V. Upon checking its data sheet and pinout, I noticed there's no dedicated pin for CS (Chip Select).
Which pin should I use as CS in the Arduino Nano?
Which pin should I connect the DI0 pin of RFM69HCW in the Arduino Nano?
dda
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2 Answers 2
There is no dedicated CS pin, and you can use any available Dx pin – which enables you, among other things, to have several devices on the same bus. The CS pin allows you to select (hence the S) the right device.
answered Nov 26, 2023 at 14:03
On any Arduino you can use any free digital pin as SPI CS.
answered Mar 2, 2022 at 5:28
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Okay. Thank you! Even the DI0 pin of RFM69HCW can I connect it too to any pins of Arduino Nano?lostresearch– lostresearch2022年03月02日 05:41:53 +00:00Commented Mar 2, 2022 at 5:41
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@lostresearch, why not? it is free. the SPI pins on Nano are 11, 12 and 132022年03月02日 05:44:23 +00:00Commented Mar 2, 2022 at 5:44