arduino:external-power-supply
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arduino:external-power-supply [2019/04/14 10:29] Ilias Iliopoulos [Schematic] |
arduino:external-power-supply [2024/02/02 21:47] (current) Ilias Iliopoulos |
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| ====== Power Arduino Nano with an external power supply ====== | ====== Power Arduino Nano with an external power supply ====== | ||
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| + | {{htmlmetatags>metatag-keywords=(arduino, nano, power, external power supply) | ||
| + | metatag-description=(Power Arduino Nano with an external power supply) | ||
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| ===== Introduction ===== | ===== Introduction ===== | ||
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| In my projects with an Arduino Nano, I always include a 1N5817 diode and use it exclusively for powering the Nano module. All other devices are powered directly by the external power supply, as shown in the schematic. This provides the capability to separate the power feeds and use bypass capacitors at each point of the circuit where they are required. | In my projects with an Arduino Nano, I always include a 1N5817 diode and use it exclusively for powering the Nano module. All other devices are powered directly by the external power supply, as shown in the schematic. This provides the capability to separate the power feeds and use bypass capacitors at each point of the circuit where they are required. | ||
| - | Remembering also the problem in back-powering circuits from USB to Vin that was discussed above, if we wish to power our circuit through Vin, we can also use a 1N5817 diode at the point of entry to Vin. This will ensure that current will never flow from our Arduino to other circuits . | + | Remembering also the problem in back-powering circuits from USB to Vin that was discussed above, if we wish to power our circuit through Vin, we can also use a diode at the point of entry to Vin. This will ensure that current will never flow from our Arduino to other circuits. Any diode of the 1N400x series will do, provided that you have 0.7V to spare, otherwise a 1N5817 will do the job. |
| ===== Can I use it for Arduino UNO? ===== | ===== Can I use it for Arduino UNO? ===== | ||
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| My personal view on the subject is that I would never waste an UNO to operate as a controller somewhere inside a closet. The UNO board is suited mostly for development activities. If you want a pure controller board having the exact same functionality as the UNO, with the same ATmega328p chip but in smaller size and with smaller price, go with a Nano. | My personal view on the subject is that I would never waste an UNO to operate as a controller somewhere inside a closet. The UNO board is suited mostly for development activities. If you want a pure controller board having the exact same functionality as the UNO, with the same ATmega328p chip but in smaller size and with smaller price, go with a Nano. | ||
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| + | ~~DISQUS~~ | ||
arduino/external-power-supply.1555226990.txt.gz ยท Last modified: 2019/04/14 10:29 by Ilias Iliopoulos