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STM8S001J3M3 with RS485 Interface and DS1621S Thermometer, V1.2 improved RX/TX LED.

author: TG9541
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2 layer board of 1.32 x 0.25 inches (33.4 x 6.4 mm)
Uploaded: February 06, 2021
Shared: February 06, 2021
Total Price: $1.65

This is the 3rd revision of a miniature STM8S001J3M3 based MODBUS node with a DS1621 or DS1721 I2C temperature sensor.

This STM8S001J3M3 breakout board with RS485 interface and DS1621S temperature sensor can be used, e.g., for STM8 eForth and MODBUS applications.

Connectors are optional: wires can be soldered to the pads of J1, and the PCB can be inserted in a metal tube. Applications without the DS1621S I2C thermometer IC are also possible: 3 to 4 GPIOs and 3.3V supply are available on connector J2. (refer to the GPIO description on GitHub for details).

front back schematics

KiCad Files and BOM

Docs, files and BOM are on GitHub: https://github.com/TG9541/stm8s001rs485

This is the 3rd revision of a miniature STM8S001J3M3 based MODBUS node with a DS1621 or DS1721 I2C temperature sensor.

This STM8S001J3M3 breakout board with RS485 interface and DS1621S temperature sensor can be used, e.g., for STM8 eForth and MODBUS applications.

Connectors are optional: wires can be soldered to the pads of J1, and the PCB can be inserted in a metal tube. Applications without the DS1621S I2C thermometer IC are also possible: 3 to 4 GPIOs and 3.3V supply are available on connector J2. (refer to the GPIO description on GitHub for details).

front back schematics

KiCad Files and BOM

Docs, files and BOM are on GitHub: https://github.com/TG9541/stm8s001rs485

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      Since this is a project designed by a community member, it may contain design errors that prevent it from working as intended. OSH Park cannot place any guarantees about the functionality or correctness of the design.
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