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Switch Big Signals with a Small Microcontroller Thumbnail Wordpress

Switch Big Signals with a Small Microcontroller | Relays

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Using opto-isolated relays to control large devices with small 3.3V signals. We previously wrote about how to shift voltage levels here. That article solves a common problem: your MCU (microcontroller) or SBC (single-board computer, think Raspberry Pi) needs to talk to another device, but the two use different voltages — […]

Stop guessing how much battery you've got left MAX17048 fuel gauge Thumbnail Wordpress

Stop guessing how much battery you’ve got left | MAX17048 fuel gauge

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Unlike the fuel gauge in your car, this one might be a lot less distressing to look at. Lots of our projects run on battery power, especially with how easily accessible these tiny Li-Po batteries have become. However, there is a potential problem you might run into if your project […]

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