Recent content by smithjones

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    Solar charging a LiFePO4 Battery #2

    You’re on the right track overall. For a 12V LiFePO4 like this, you mainly need a controller that supports LiFePO4 profiles and lets you set the charge voltage around 14.4–14.6V with a current limit under 6.6A. Battery capacity itself isn’t an issue, it just affects how long charging takes. A...
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    Arduino Casio calculator data logger breakthrough! Paused RECEIVE() no COM error!

    That’s a really impressive find, especially given how long the Casio link protocol was assumed to be strictly blocking. Being able to pause RECEIVE() without triggering a COM error fundamentally changes what these calculators can do, and enabling true time-interval logging without external EA...
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    Losses in LTSpice

    Without seeing the schematic, the most common causes are missing or incorrect gate drive, no proper load or snubber, and incorrect device models or initial conditions. A linearly rising drain–source voltage usually means the switch is never fully turning on or off, often due to insufficient gate...
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    Splitting and re connecting LED string lighting

    It can be done electrically by splicing the wires in parallel at the corner, but there’s a catch: because those effects (rolling, wave, chasing) are controlled by the controller timing and wiring layout, splitting the run can cause the patterns to look wrong or out of sync. You must keep...
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