Introduction to mDash platform for administration of IoT Devices

On this occasion I present the platform or an administration service for IoT devices called mDash, belonging to Cesanta, the creators of the IoT Mongoose Os development firmware. mDash allows firmware updates OTA (over-the-air) and remote administration, alerts and notifications, remote device control, file management with devices, all these features are for Espressif’s modules ESP32…

Meter PZEM-004 + Arduino Nano Modbus RTU (RS232) & Platform IoT Node-RED

Originally this test is performed in June 2018 in less than one year, for reasons of availability do not publish, technically just missing the documentation, then I will present the results, well they say there is better late than never. In this opportunity our PZEM-004 meter or it is also possible with our PZEM-004T communication…

Review Module Wemos TTGO ESP32 + OLED V2.0 + DHT11

I present a TTGO ESP32 module, this device has caught my attention since it is very complete, I ordered one to the Banggood.com online store for testing, the interesting thing is the union of the well known ESP32 module, DHT11 Sensor (Temperature / Relative Humidity ), 0.96 inch white OLED display, charging circuit for Lithium…

10 Professional PCBs for $ 2 with JLCPCB – Ard-LoRa Prototypes

In my last tests I have used platforms like ESP8266 implementing LoRa modulation and in some applications with LoRaWAN, in this opportunity I will use the Arduino platform and I will manufacture a prototype I have contacted again to JLCPCB that they offer a PCB manufacturing service at a very reasonable price. In this opportunity I will use…

Meter PZEM-004T with Arduino ESP32 ESP8266 Python & Raspberry Pi

In this opportunity we will collect tests with my new electric consumption meter PZEM-004T, making integrations with some of the most known hardware platforms ESP8266, Arduino Nano, ESP32, Arduino UNO + Shield Ethernet W5100 and Python in Raspberry Pi. For a long time I wanted to try the PZEM-004T of Peacefair, I bought my meter…

How to find IP addresses of Ethernet devices?

In this opportunity we will address a problem that has happened to us when we need to obtain the IP address of an Ethernet device, it can be a PC, Smartphone, PLC in our case it can be an Arduino with shield ethernet, ESP8266 or ESP32. If we do not have the possibility to see or know…

Electricity consumption meter Peacefair PZEM 004 + ESP8266 & Arduino Nano

For some time I wanted to buy a single-phase electricity consumption meter, a few months ago I got Peacefair Reference PZEM-004 meter, its price seemed affordable, it has the advantages of being a non-invasive meter in the electrical circuit and has a communication protocol to request data such as Active Instantaneous Power “kW”, Voltage “V”,…

Test Module SD / MicroSD via SPI For Arduino & ESP8266

In this opportunity to test an SD Module and MicroSD with Arduino and ESP8266, in advance thanks to ICStation.com. We will not do a detailed tutorial on introduction to SD since there is already great documentation regarding the subject in intenet, but indicate the applications available for these modules. I introduce the SD module and Micro…