kit:mod_battery_power
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kit:mod_battery_power [2019/01/19 16:45] – [Power Bank Capacity] steve | kit:mod_battery_power [2019/01/19 18:12] (current) – [Power Bank Capacity] steve | ||
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- | January 19, 2019 - This article is still being authored. This information is not yet ready to use!!! | + | January 19, 2019 - This article is still being authored. This information is not |
+ | | ||
====== Introduction ====== | ====== Introduction ====== | ||
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====== Short Term Power Plan ====== | ====== Short Term Power Plan ====== | ||
This section describes what you'll need to do in order to convert a CrowBox to run on short term power. | This section describes what you'll need to do in order to convert a CrowBox to run on short term power. | ||
+ | |||
+ | ===== Required Parts ===== | ||
+ | Here's a good thing- you only two need parts to convert a CrowBox to run from a USB power bank. Even better, one of these parts is the power bank itself! We'll talk more about choosing a power bank in moment. | ||
+ | |||
+ | The other part you need is called a "micro USB breakout board" or "micro USB pinboard" | ||
+ | |||
+ | **NOTE:** Be sure that the USB breakout boards that you buy are "micro USB" and that they come with the header pins! Also, some minor soldering is usually required. The item you are looking for looks like this: | ||
+ | |||
+ | {{ : | ||
+ | |||
===== Choosing a power bank ===== | ===== Choosing a power bank ===== | ||
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==== Power Bank Capacity ==== | ==== Power Bank Capacity ==== | ||
- | This section is under serious revision right now. Do not use this information. | + | USB Power Bank capacity |
- | + | ||
- | + | ||
- | USB Power Bank capacity is expressed in milliamp-hours, | + | |
Capacity matters because it determines how long your CrowBox should run off the power bank before the power bank must be removed and recharged. Here's how you figure out how long a CrowBox should run on a given power bank: | Capacity matters because it determines how long your CrowBox should run off the power bank before the power bank must be removed and recharged. Here's how you figure out how long a CrowBox should run on a given power bank: | ||
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This computation assumes the CrowBox is idle most of the time. Depending on the level of activity, particularly how many times the sliding lid is opened and closed each day, more energy will be used and the power bank may need to be removed and recharged sooner. | This computation assumes the CrowBox is idle most of the time. Depending on the level of activity, particularly how many times the sliding lid is opened and closed each day, more energy will be used and the power bank may need to be removed and recharged sooner. | ||
- | This computation also ignores power that may be consumed by the power bank itself. Power banks contain voltage regulation circuitry and many of them use one or more LED's to indicate power or status. | + | This computation also ignores power that may be consumed by the power bank itself. Power banks contain voltage regulation circuitry and many of them use one or more LED's to indicate power or status. |
- | To compensate for these unknown factors in our power consumption it's considered good practice | + | If you are considering a 5000 mAh power bank, our formula says that a CrowBox should run for 100 hours before the power bank is dead. (5000 / 50 = 100 hours). This works out to 4.16 days (100 hours / 24 hours = 4.16 days). |
- | As you no doubt realize, | + | A high-capacity |
+ | |||
+ | **However!** These computations assume ideal conditions | ||
+ | |||
+ | [practical hours of operation] = [power bank capacity in mAh] / 75 | ||
+ | |||
+ | Using this updated formula, here's how long you should actually expect to run a CrowBox | ||
- | So- If you are considering a 5000 mAh power bank, a CrowBox should run for about 100 hours on a full charge (5000/50 = 100 hours). 100 hours divided by 24 comes out to about 4.166 days of operation on a single charge. To be safe, it would be best to recharge the battery about every three days. This should account for the additional power consumed by the CrowBox opening and closing several times a day as well as trace power consumed by the internal circuitry of the power bank as well as any indicator lights the power bank may have. | + | * 5,000 mAh - 66.6 hours or 2.77 days |
+ | * 10,000 mAh - 133.33 hours or 5.3 days | ||
+ | * 22,000 mAh - 293.3 hours or 12.2 days | ||
+ | * 30,000 mAh - 400 hours or 16.6 days | ||
- | A high-capacity power bank providing 30,000 mAh **should** be able to power a CrowBox for around three weeks. The math works out to 25 days but it's probably a good idea to plan on recharging the battery sooner. | ||
kit/mod_battery_power.1547945137.txt.gz · Last modified: 2019/01/19 16:45 by steve