Basic Modbus RTU Master RS485 Test with ESP32 + XY-K485 + PZEM-016 (without libraries)

In this opportunity we will carry out tests and explanation of the Modbus RTU protocol implemented in ESP32 requesting data from the Single-phase consumption meter PZEM-016. The intent of this tutorial is: 1. Explain in a simple way the creation and operation of an industrial protocol, in this case the Modbus RTU protocol used and…

Review Dragino LoRaWAN RS485 to LoRaWAN RS485-LN Converter #8

I present the Dragino RS485-LN is an RS485 to LoRaWAN converter, a few months ago I ordered a couple of modules for testing. This converter would allow monitoring and controlling devices over long distances, adding the versatility of the RS485. Characteristics LoRaWAN Class A and Class C protocol (default Class C) Frequency bands: CN470 /…

Integration http JSON Node-RED (Raspberry Pi) with PowerPDU 4C from Netio # 002

A few ago we made the review of the Netio PowerPDU 4C a Power Socket, it is an Intelligent Socket which allows Iot and M2M integrations in a very easy way. Following the complete review of the Netio PowerPDU 4C, it has a lot of interesting features for measurement and control. In this tutorial we…

Review Gateway RAK2245 Pi HAT Ver. B (Multichannel) LoRAWAN # 6

Continuing our LoRaWAN tests, a few months ago the materials arrived to assemble my new gateway using the RAK2245 Pi HAT Module for Raspberry Pi. In previous tutorials we used the RAK833 USB / SPI. This time we will review our new RAK2245 Pi HAT module. Features Compatible with Raspberry Pi 3 Model B +…

Install drivers and (UDP Packet Forwarder) Raspberry Pi with Gateway RAK833 Version USB / SPI LoRaWAN # 5

In previous tutorials we reviewed our Gateway using the RAK833, the Radio module created by RAKWireless, adding a Raspberry Pi we can create a professional and functional gateway for our LoRaWAN implementations. Important: This tutorial is only focused on the RAK833 that have USB and SPI communication, for the SPI version another driver and another…

Review HELTEC Module (WIFI LoRa 32) 915-868Mhz for LoRaWAN #4

I have been collecting information about functional nodes for basic LoRaWAN tests for a while. This time I present the HELTEC LoRa 32 v1 Wifi module, it collects several interesting functions in IoT applications. This node is the integration of an ESP32 and a LoRa Chip SX1276 (868-915Mhz) 0.96 inch Oled screen, usb-serial converter CP2102….

Review Module RAK811 LoRa Node AT-Commands LoRaWAN # 3

Some time ago, in previous tutorials we have already determined some factors to choose the appropriate gateway (gateway LoRaWAN) for your LoRaWAN application, this tutorial was created gathering considerations before starting, with considerations scopes and concepts about LoRaWAN. Based on these considerations, a robust, powerful and functional gateway or gateway has been assembled according to…

Making Motherboard, Rapid Prototyping with JLCPCB.com

A colleague has designed a rapid prototyping system, mixing practicality with robustness in the assembly of DIY projects, integrating assembly of ESP32 modules, Arduino, Raspberry Pi, Lora I / O ADC, sensors and relays among other peripherals for external assembly. Initially, pcb’s were created in an artisanal way for tests, after tests it has been…