2 layers34.8 × 69.8 mm

Modbus IO Board
TAN-ASH/Modbus_I-O_Board_PCB
Modbus Protocol based Input/output board to control periphery
84 parts
Boards in 1 GitHub repository, designed in KiCad, that use the ATMEGA328PB-AN by Microchip Technology (-40℃~+105℃ 1.8V~5.5V 10bit 1KB 20MHz 27 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHS). See how each wires it, with its parts, size, README and files; the ATMEGA328PB-AN’s symbol, footprint and pinout are on its own page.

TAN-ASH/Modbus_I-O_Board_PCB
Modbus Protocol based Input/output board to control periphery