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Karl Berger
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Apr 02 2017
Di Mini (ESP8266) Wi-Fi Status Codes
The ESP8266 using the Arduino Core reports Wi-Fi status with the WiFi.status() function. The D1M-WX1 Weather Station attempts to connect to Wi-Fi every 250 milliseconds until the “Connect” status is found. If this does not happen after 15 attempts, it prints the status to the Serial Monitor. Normally, the LED on the ESP8266 flashes five or six …
Permanent link to this article: https://w4krl.com/di-mini-esp8266-wi-fi-status-codes/
Dec 11 2016
Sleep Mode for the Wemos D1 Mini
The key to using solar power in an Internet of Things project is to put the microcontroller unit into sleep modeafter the sensors are read and the data posted to your IoT server. The NodeMCU and the Wemos D1 WiFi, a larger profile that mimics the Arduino UNO form, reliably woke from deep sleep. So …
Permanent link to this article: https://w4krl.com/sleep-mode-for-the-wemos-d1-mini/
Dec 06 2016
External sensors for weather station
Recently the local Institute of Electrical and Electronic Engineers (IEEE) held two “hands-on” sessions to build an Internet of Things (IoT) weather station. We built it on a breadboard so that the attendees would not have to solder wires. Several of the participants have kept their stations on-line and two have placed the unit outdoors. …
Permanent link to this article: https://w4krl.com/external-sensors-for-weather-station/
Nov 24 2016
Solar Power Supply
A solar power supply would be a really neat addition to any Internet of Things project. The ultimate goal would be to have a self-sufficient IoT device that could be remotely reprogrammed with the Over The Air (OTA) feature. A key to using solar power is to reduce the average power requirement of the IoT device. …
Permanent link to this article: https://w4krl.com/solar-power-supply/