M5Stack & AWS IoT

First steps with the M5Stack IoT EduKit. Nice package and decent instructions.

Saleae Logic Analyzer – First Impressions

Using a logic analyzer is a new experience for me. And it seems I got a really good one which is also very programmable.

PCF8583 and Espruino

Use the real time clock PCF8583 with Espruino

openLRSng

Use openLRSng TX/RX to move a servo.

LEGO+ and M5Stack

M5Stack and LEGO+ module DC Motor to control an old NXT LEGO Motor.

Mijia LYWSD03MMC, BLE and Node.js

Reflashing Xiaomi Mijia LYWSD03MMC allows you to read the environment data easily via BLE. Here is are 2 small Nodejs programs to simplify this a lot.

ESP8266 and LEDs

After the short excurse with Blynk in the previous post I wanted to do the same without a company between. After all, controlling an LED is rather simple. So back to basics: MQTT it is. Got a Mosquitto instance on the Internet with the following docker-compose.yml definition: Very basic configuration. No TLS, but I defined

Blynk and M5Stack

Using my M5Stack with Blynk makes sense: it has plenty sensors and a display and LEDs. Update M5Stack firmware to v1.7.0 via the M5Burner Have ampy installed Download BlynkLib.py from https://github.com/vshymanskyy/blynk-library-python Set your M5 into “APP Mode” to be able to use the REPL reliably (boot, hit Setup button, select mode, reboot) Upload BlynkLib.py: Now

Blynk IoT Platform

Yesterday I read an article about blink(1) which is essentially a USB connected and controlled RGB LED light. I got some ESP8266 and some WS2812 LEDs to do the same, and it even can connect via WiFi and the Internet. So that’ll what do on Sunday. Somehow I arrived at Blynk which is a totally

ESP8266’s smaller brother: ESP8285

I forgot I bought one of those a while ago! To flash Espruino software on it: Files from https://www.espruino.com/binaries/espruino_2v05_esp8266/. Source: http://forum.espruino.com/conversations/319660/ although that speaks of 40MHz. I have not seen any issues with 80MHz. Needless to say, it works fine: