next.module @nextmodule

The RS485 module was tested up to a speed of 115.2 Kbps. I used the MODBUS RTU protocol and EasyBuilder Pro to test it. #nextmodule #rs485 #rs422 #module #industrial #plc #automation #iot #devboard

keyboard_arrow_left Previous keyboard_arrow_right Next

12 modules in one device: 1 x CPU ESP32S3 1 x PSU DC 1 x ETH W5500 1 x 8DI-ISO 1 x 8DO 1 x 16DIO 1 x CAN 1 x RS485 1 x RS232 1 x RTC 2 x DBG LED Size: 54.5 x 85.2 x 85.2 mm #nextmodule #plc #automation #iot #smarthome #esp32

keyboard_arrow_left Previous keyboard_arrow_right Next

next.module CAN (isolated)

CAN module has been successfully tested! In both versions with and without galvanic isolation. It has been tested at speeds ranging from 10 Kbps to 1 Mbps. The most important thing is that the capacitive galvanic isolator from 2Pay Semi performed well, I had doubts about it.

keyboard_arrow_left Previous keyboard_arrow_right Next

next.module CAN and RS485

next.module DIO modules testing

The modules DI8-ISO, DO8 and DIO16 have been tested and they all work fine. A few things that need to be fixed: 🟠 In DI8-ISO, I need to increase the resistance to limit the current through the optocouplers. 🟠 In DO8, I need to add a short circuit protection

keyboard_arrow_left Previous keyboard_arrow_right Next

Connectors on DI8-ISO and DO8 modules may have different designs, such as screw terminals or spring terminals. Spring terminals are larger and slightly more expensive, but they provide good contact over time and in vibration environments.

keyboard_arrow_left Previous keyboard_arrow_right Next

ETH W5500 module testing

The ETH W5500 module is working! I was concerned about possible mistakes in the wiring of the chip on Ethernet side, but everything is ok. There are 2 issues: ✅ I forgot to add a 1 Mohm resistor that shunts oscillator ✅ The LEDs in the connector are too dim

keyboard_arrow_left Previous keyboard_arrow_right Next

CPU ESP32S3 module: ✅ ESP32S3 is flashed and debugged via USB-C ✅ RGB-LEDs are working. The implementation of the WS2812 chip protocol is hardware-based ✅ DC-DC based works well, but needs to be tested at currents up to 1.5-2 A ✅ Intermodule connectors are convenient

keyboard_arrow_left Previous keyboard_arrow_right Next

next.module CPU ESP32S3 module testing

next.module prototype testing started!

PCBs for first prototypes

keyboard_arrow_left Previous keyboard_arrow_right Next

A very simple and cheap debugging module with 32 LEDs displaying the status of the pins on the intermodule interface and the presence of supply voltages

Module with DAC for stereo audio output to 3.5" analog jack

Module with RTC, battery and EEPROM

This schematic diagram explains how multiple PSU modules are connected in one device

This module allows you to power your device AC. A wide range of input voltages allows this module to be used with 115V or 230V power outlets.

This module allows you to power your device using a common DC power source. The input voltage range is from 7 to 40 V.