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Wemos D1 Mini |
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MOV |
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Glass fuse holder |
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200 mA glass fuse |
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RS486 to TTL converter board |
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ESP8266 Modbus board
This board uses an ESP8266 and an RS486 to TTL converter to allow the ESP to access devices over Modbus. I used this to read from and write to a Beca Modbus Thermostat. You can find the detailed sketch of this project on my github page: https://github.com/nygma2004/beca_mqtt
Parts:
Some are generic parts that I have ordered a long time ago from eBay and since the listing has been removed.
Wemos D1 Mini ESP8266 module (clone)
MAX485 RS-485 TTL to RS485 MAX485CSA Converter Module
Panel Mount PCB Fuse Case Holder With Cover For 5x20mm Fuse
5.08mm Pitch Panel KF301-2P KF301-3P Screw Terminal Block PCB Connector
HLK-PM05 AC-DC 220V to 5V Step Down Buck Isolated Power Supply Module
MOV for 275V
You can watch a short video about this PCB here: https://youtu.be/ziYbEip_HqQ.
Further details in the wiring is in the github read.me.
ESP8266 Modbus board
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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