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5V UPS for Raspberry Pi: Difference between revisions
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At first it might seems as a good idea to use power stabilizer but problem with this solution is that all diference (12V-5V = 7V) would be converted implicitly to heat. So not only you would need to have some cooler but also a lot of power from battery would be lost without any usage. This is a reason why usage of DC-DC power converter is recommended. DC-DC converter has one large advantage specifically low power lose and high efficiency. If you put 12V at 2A to input you will likely get minimally 5V at 4A. One disadvantage of DC-DC converter is price which is slightly higher than using stabilizer but still pretty low if you buy it on [http://www.ebay.com/ Ebay.com]. Just try to search for ''DC-DC step-down buck converter 5V USB 3A'' (or 2A of your choice) and you should get some for as low as 2-3 USD. | At first it might seems as a good idea to use power stabilizer but problem with this solution is that all diference (12V-5V = 7V) would be converted implicitly to heat. So not only you would need to have some cooler but also a lot of power from battery would be lost without any usage. This is a reason why usage of DC-DC power converter is recommended. DC-DC converter has one large advantage specifically low power lose and high efficiency. If you put 12V at 2A to input you will likely get minimally 5V at 4A. One disadvantage of DC-DC converter is price which is slightly higher than using stabilizer but still pretty low if you buy it on [http://www.ebay.com/ Ebay.com]. Just try to search for ''DC-DC step-down buck converter 5V USB 3A'' (or 2A of your choice) and you should get some for as low as 2-3 USD. | ||
== Everything connected together == | == Everything connected together == | ||
You necessarily does not need to do any soldering or use any breadboard or circuit board. All components can be bought on E-Bay or Aliexpress together for price lower than 50 USD and everything you just need to do is connect all cables properly. For this reason there is a simple diagram how to connect it. Colors of wires are type used in EU - in your country it might be different. '''In any case you connect everything at your own risk and I am not responsible for any misuse or damage caused by my diagram.''' | |||
[[File:Ups-connected.jpg|500px|thumb|center|Everything connected together]] | [[File:Ups-connected.jpg|500px|thumb|center|Everything connected together]] | ||