Enclosure for RS485 to TTL module HW-0519
thingiverse
The enclosure for RS485 to TTL adapter (module named HW-0519). I soldered the right angle goldpin header to TTL input and Degson header to RS485 bus. FreeCAD source included. BTW I use it to connect ESPHome (Sonoff Basic) to Mod-bus electric meter. Some hack needed to get additional GPIO4 and GPIO5 directly from ESP8266 chip. Notice: this GPIOs are protect from TTL voltage level with two 3.3 kOhm resistors in serial!
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