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tutorials:checkpointing_overview [2025/12/11 19:35] – [Standard Checkpointing] ibchadmintutorials:checkpointing_overview [2026/03/25 13:38] (current) – [The Concerns With Capacitors] ibchadmin
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 The issue arises when the requirements of the device and its peripherals each prioritize differing capacitances.  Take a simple device with a low power environmental sensor and a transmitter.  The sensor favors smaller capacitance, in order to charge more frequently and retrieve more samples (while being less likely to miss interesting events).  Transmitting packets, however, is energy intensive (with even low-power methods requiring energy equal to tens of thousands of operations on a low power microcontroller).  The transmitter may not be able to even successfully broadcast below a certain capacitance, but the larger capacitance is in direct conflict with the preference of the sensor to have shorter (but more frequent) bursts of energy for detection purposes. The issue arises when the requirements of the device and its peripherals each prioritize differing capacitances.  Take a simple device with a low power environmental sensor and a transmitter.  The sensor favors smaller capacitance, in order to charge more frequently and retrieve more samples (while being less likely to miss interesting events).  Transmitting packets, however, is energy intensive (with even low-power methods requiring energy equal to tens of thousands of operations on a low power microcontroller).  The transmitter may not be able to even successfully broadcast below a certain capacitance, but the larger capacitance is in direct conflict with the preference of the sensor to have shorter (but more frequent) bursts of energy for detection purposes.
  
-To this end a variety of capacitor configurations have been explored.  These configurations are the subject of [[tutorials:capacitor_sizing|their own article]], but can range from dynamically adjustable capacitor banks to individual capacitors for each microcontroller and/or peripheral.  Knowing the exact capacitor configuration can impact checkpointing: a strategy that assumes a fixed capacitance will obviously struggle with a dynamic bank, and multiple capacitors can complicate energy availability predictions depending on arrangement.+To this end a variety of capacitor configurations have been explored.  These configurations are the subject of [[tutorials:capacitor_selection|their own article]], but can range from dynamically adjustable capacitor banks to individual capacitors for each microcontroller and/or peripheral.  Knowing the exact capacitor configuration can impact checkpointing: a strategy that assumes a fixed capacitance will obviously struggle with a dynamic bank, and multiple capacitors can complicate energy availability predictions depending on arrangement.
  
 ===== Designing Adaptable Strategies ===== ===== Designing Adaptable Strategies =====
tutorials/checkpointing_overview.txt · Last modified: 2026/03/25 13:38 by ibchadmin

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