I am designing a custom board for the LoPy4 and I was wondering which pins can support OneWire. Is there any limitation apart from the pins already assigned (e.g. LoRa module, UART, etc). Any requirement?
Thank you in advance!

]]>https://forum.pycom.io/topic/6787/pins-supporting-onewireRSS for NodeTue, 10 Mar 2026 16:17:53 GMTWed, 27 Jan 2021 00:11:21 GMT60I am designing a custom board for the LoPy4 and I was wondering which pins can support OneWire. Is there any limitation apart from the pins already assigned (e.g. LoRa module, UART, etc). Any requirement?
Thank you in advance!

]]>https://forum.pycom.io/post/36780https://forum.pycom.io/post/36780Wed, 27 Jan 2021 00:11:21 GMT@berni You can use any digital bidirectional (i.e. non analogue input only) pin which is not allocated to another functionality. This means you should avoid:

• P13-P18 since they are input-only pins,
• P12 which is used for antenna selection,
• P5-P7 which are used for LoRa radio, and
• P0-P1 used for UART.

]]>https://forum.pycom.io/post/36781https://forum.pycom.io/post/36781Wed, 27 Jan 2021 01:09:13 GMT