How to connect the ESP8266 to a DS3231 Real Time Clock.
ESP8266: Controlling a buzzer
How to control a passive buzzer module using an ESP8266 and the Arduino core.
Real Time Clock: DS3231
The DS3231 is a real time clock from Maxim that allows us to measure time with a very good accuracy.
ESP8266: Read DHT11 measurements
How to connect the DHT11 sensor to an ESP8266 and obtain measurements.
Buying cheap electronics at Ebay: Part 1
Introduction The objective of this series of posts is to list some electronic components and devices useful for makers and hobbyists that can be bought by very low prices at eBay. Many times, we can find those devices at a much lower price than in many specialized stores, making them affordable to more people. In this particular …
IoT: Temperature logger
Architecture of a simple IoT temperature logger using the ESP8266 and a web server deployed on the cloud.
Laws of electronics: KCL (Kirchhoff’s Current Law)
Description of Kirchhoff’s Current Law (KCL).
Laws of electronics: KCL
This post describes one of the basic laws of circuit analysis, more precisely KCL (Kirchhoff’s Current Law), which states that the the sum of the currents leaving and entering a node is zero. KCL Kirchhoff's Current Law states that the the sum of the currents leaving and entering a node is zero. We need to take into …
Laws of electronics: KVL (Kirchhoff’s Voltage Law)
Description of KVL (Kirchhoff's Voltage Law), one of the basic laws of circuit analysis.
Laws of electronics: KVL
This post describes one of the basic laws of circuit analysis, more precisely KVL (Kirchhoff's Voltage Law), which states that the sum of all voltages in a closed loop of a circuit are equal to zero. KVL Kirchhoff's Voltage Law states that the sum of all voltages in a closed loop of a circuit (taking into account …
techtutorialsx 