Arduino EEPROM stores any datatype
Funny how a simple idea can spider out into multiple paths. Arduino EEPROM seemed like a straightforward concept. A few a years ago it was as easy as having either 512 or 1024 …
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Debug SONOFF AC Relay with a Thermal Camera
My recent SONOFF WiFi Switch experience reminded me of something from high school. I attended an off-site electronics class with my best friend. As teenage boys, we were prone to …
Read MoreVoltage Dividers as Regulators?! | AddOhms #22
Can you use voltage dividers as regulators? What if you add a Zener Diode? In this AddOhms episode, I show what happens when you try to power a complex circuit like an ESP8266 with …
Read MoreMeasure PWM Current with a Modified Moving Average
Pulse Width Modulation (PWM) makes it possible to dim lights, control the speed of motors, and (with the help of filters) generate analog reference voltages. When measuring the …
Read MoreArduino to ESP8266, 5 reasons to switch
A couple of weeks ago I posted four things to know about the ESP8266 before using one. The biggest surprise from that post is people seem to think I do not like the ESP8266! This …
Read MoreMQTT Tutorial for Raspberry Pi, Arduino, and ESP8266
This week’s MQTT Tutorial connects a Raspberry Pi, ESP8266 (or Arduino), and a PC together. Remember last week’s post provided an overview of message brokers and MQTT. We learned …
Read MoreMQTT Introduction and Tutorial Part One
MQTT is an easy way for Internet of Things (IoT) devices to communicate with each other. This light-weight protocol can be used with a simple 8-bit Arduino to a Raspberry Pi to a …
Read MoreFour ESP8266 Gotchas and a tip for a first time users
Adding WiFi to any project can be difficult. There are a few off the shelf options that make it easier. One option is the official Arduino WiFi shield. This full-featured shield …
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