adccommunitymod (AutomationDirect) asked a question.
Created by: bikerglen
Date: 04-05-2020, 09:42 PM
**** This post has been imported from our legacy forum. Information in this post may be outdated and links contained in the post may no longer work.****
Over the weekend I finished my open-source isolated RS-422 / RS-485 shield for the P1AM-100. The shield fits inside the P1AM-PROTO prototyping enclosure. It's based on the Analog Devices ADM2582E isolated, full-duplex RS-422 / RS-485 transceiver. Optional 120 Ω termination is independently selectable on both the transmit and receive pairs.
The board is compatible with the P1AM-100 with P1000 bus modules and the P1AM-ETH Ethernet module installed. The board has a Microchip EUI-48 serial EEPROM with a MAC address on it for use with the P1AM-ETH Ethernet module as a bonus feature.
The project is documented on my blog: https://bikerglen.com/blog/p1am-100-...rs-485-shield/
The hardware design files and example sketches are available in one of my GitHub repositories: https://github.com/bikerglen/p1am-pr...isolated-rs485
I'm open to forks, pull requests, and constructive feedback. Hopefully people will find this useful.
Enjoy!
-Glen
Links are munged a bit. (I think the link-shortening in the legacy forum did this)
https://bikerglen.com/blog/p1am-100-isolated-rs-485-shield/
https://github.com/bikerglen/p1am-proto-experiments/tree/master/p1am-isolated-rs485 (I think this is the project link)