Use a cheap RTC to wake up your Arduino from Deep Sleep
JLCPCB Only $2 for PCB Prototype any colour https://jlcpcb.com/

More information (including all links, sketches & PDFs in my GitHub):
https://github.com/RalphBacon/192-DS3...

INFORMATION

The DS2131 library I'm using in this demo (I do wish each developer used a unique name!)
https://github.com/rodan/ds3231

Alternative DS3231 library by Northern Widget, has some nice features
https://github.com/NorthernWidget/DS3231

DS3231 Datasheet. Essential reading if you are using native I2C calls (ie no library)
https://cdn-shop.adafruit.com/product...

AT24C32 EEPROM on that module - this could be VERY useful for data-logging. 1 million writes!
https://ww1.microchip.com/downloads/e...

A library to exploit that AT24C32 EEPROM
https://github.com/jlesech/Eeprom24C3...

Battery Life Calculator
https://www.digikey.co.uk/en/resource...

Best 18650 battery of 2019
https://www.18650batterystore.com/186...

Si4599 Datasheet
https://www.vishay.com/docs/68971/si4...

Want to know about I2C?
https://en.wikipedia.org/wiki/I%C2%B2C


PRODUCTS

DS3132 module (with EEPROM) 3 pieces for less than $5
https://www.banggood.com/3pcs-DS3231-...

Si4599 N and P Channel 40V (D -S) MOSFET Expansion Board Module (each)
https://www.banggood.com/CJMCU-4599-S...

List of all my videos
(Special thanks to Michael Kurt Vogel for compiling this)
http://bit.ly/YouTubeVideoList-RalphB...

If you like this video please give it a thumbs up, share it and if you're not already subscribed please consider doing so and joining me on my Arduinite journey

My channel, GitHub and blog are here:
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https://ralphbacon.blog
https://github.com/RalphBacon
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