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18650

A 4-post collection

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"Cricket" from Things on Edge

A chance encounter on a Facebook group brought me - literally - to the Edge. I read a post in which someone mentioned the ThingsonEdge "Cricket" »

Mike Diamond on ESP8266 - 18650 - mailbox - node red - mqtt - raspberry pi 03 July 2020
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Battery-operated temperature monitor logging data directly to Google Sheets - using ESP8266-12, DS18B20, and DeepSleep

In recent months I’ve been using Cayenne for many of my IoT projects, allowing me to view sensors and controllers remotely. It’s a great »

Mike Diamond on ESP8266 - deepSleep - DS18B20 - google sheets - 18650 26 April 2017
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Kitchen Roll & Silicon Chips - Easy-to-build 8-Digit LED Clock

My addiction to clocks started a few years back when I got it into my head that I wanted to build a mechanical timepiece. I spent »

Mike Diamond on DS3231 Real Time Clock - 7-Segment - MAX7219 - DS3231 - RTC - Arduino - LED - 18650 - mechanical clock - woodentimes.com 21 February 2017
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ESP 8266 Mailbox Notifier using DeepSleep and Blynk

Update July 2020 - if you're interested in creating a mailbox notifier that'll work on regular AA batteries literally for years, take a look at my »

Mike Diamond on ESP8266 - Battery - reed Switch - 18650 - blynk - deepSleep - mailbox - antenna - U.FL to SMA cable - laptop - low-power - ESP8266-07 - notifier - Normally Open - Normally Closed - arduino IDE - BC557 PNP Transistor - IOT 22 June 2016
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