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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@user56567
Thanks for responding!
I've attached my circuit diagram because I don't think there are any issues there.
I'm not printing any text, but am writing to the eeprom at every event. I don't think that would cause an issue but you would know better than I.
Everything is grounded together, and all components are being powered by the pico's 3.3v VDD so there should be no difference in voltage when on battery vs USB. (The diagram is incorrect in that aspect, it indicates that I've wired the PIR's directly to BAT)
No USB-TTL converter handy unfortunately :(
IF you think of any other possibilities I'd greatly appreciate it!
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