#142 Solar Power for the ESP8266, Arduino, etc.

In this video, I will start a project to use solar energy to power ESP8266 or Arduino devices during the whole year.
We wll answer the following questions:
1. What size the solar panel has to be in order to power our device
2. What size of battery we need to survive times with less or without sun?

Solar panels:
Solar Panel 165x165mm
Solar Panel 112x84mm
Solar Panel 53 x 30mm
Solar Panel 86 x 38mm
Solar Panel 107 x 61mm
Solar Panel 99 x 69mm
Solar Panel 80 x 80mm
Solar Panel 540mm x 340mm
Power Meters:

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  1. Hello,

    thank you for your awesome videos!

    I have the idea to combine solar and wind power, both to one project.(autonomous weather station).
    Could you give a brief hint, where and how I would best connect both power sources?
    Can I hook both to one charge controller?

  2. Super useful. I need to work through the maths for my scenarios. Andreas you are a national treasure for, probably Switzerland, but where ever, most excellent.

  3. "Because this is boring we do some tests outside…"… Cool, wirklich nicht schlecht eingebaut. Der Beitrag war aber so oder so sehr belehrend, vor allem die Fakten über die Sonneneinstrahlung und wieviel Energie man nun effektiv abzapfen kann. Besten Dank.

  4. .. recently I installed a gtb-600 micro inverter with built-in wifi monitored on app..but how do I incorporate led matrix with esp8266 to display it's yields..

  5. I built this solar charger/supply and left it on the bench without a solar panel attached. After a week my battery is trashed, completely dead, won't even get the charger started. Worked well with the solar panel attached for a few days.

  6. Hi, Andreas, very interesting tutorial (as usual). I've got a question: To calculate the watt per m2 available, is it realy correct to divide the annual solar radiation by the number hours in one year (8760) ? Since there is no radiation at night, wouldn't it be exact to divide this annual solar radiation by the number of hours of sunshine each year ?

  7. I have almost certainly watched this video before but I didn't have any specific interest in solar power then. Now I do and I searched your channel for a video on exactly this topic. As is so often the case, your video gave me exactly the information I needed, avoided unnecessary and irrelevant detail and explained everything clearly. As we say in England, it was spot on. Thank you.

  8. Vielen Dank für das sehr interessante und lehrreiche Video.
    bin in diesem Thema ganz neu unterwegs und habe folgende Frage:
    Muss das Solarpanel zwingend 5V haben wenn es an eine Batterie angeschlossen wird oder können die Volt auch höher sein?

  9. Do you have/plan to make an assembling video? I am looking for a guide, to make a D1 Mini with BME280 sensor (connected to Raspberry 4 Home Assistant) weather station, which is powered by Solar panels.

  10. Hi Andreas. I wonder if Amorphous silicon cells could offer any advantages during cloudy winter months. They have a much lower overall efficiency, but better low-light efficiency.

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