Raspberry Pi IoT Experiment #1: LDR and ThingSpeak HowTo
Sunset in the Lab – a tale of two sunsets
I logged the sunset on the weekend, when I was not in my lab – you can clearly see when it was dark outside.
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I often work late in my lab. Can you tell what time I turned the lights off?
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ThingSpeak has quite a few more capabilities that I plan on using in the future like multi-line charts and Google Gauges that can also be used to display your data.
I think I will deploy light sensors on the East and West sides of my house… it will be interesting to log the relative light levels over a year!
I’ll use the LDR+1k pull down resistor combination, as while it uses a bit more current, it gives the widest range of results (at least in my lab) with the inexpensive LDR’s I am currently using.
My 24 channel data acquisition board is overkill for the East/West daylight monitoring, so I’ve started building an eight channel one.. with the Raspberry Pi 2 being available, I’ll be using my Raspberry Pi models A/A+/B/B+ as IoT and automation nodes – not to mention brains for my bots 🙂
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