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💬 Power path manager and battery charger w/ 5V and 3.3V output

openhardware.io 4 Dec 2016, 18:41 last edited by openhardware.io 5 Dec 2016, 08:07

https://www.openhardware.io/view/291/Power-path-manager-and-battery-charger-with-5V-and-33V-output
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battery 43 power supply 14 charger 5
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ronie88 29 Sept 2018, 14:33 last edited by

What is the max ampere capacity of 3.3V battery it can charge ? Is there any upper limit like 1000mAh or 3300mAh like that ?
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Hi @tbowmo, do you mind to explain a bit about the design? I'm interested with your design. I will use these steps for removing voltage regulator, http://goo.gl/CsZaNg So the design will be battery > external step up regulator (http://goo.gl/PFt99R - to stabilize 3.3v) > vcc pin ? with these then I can use my first post design? Thanks
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I like the project. I guess the circuit is not a clone. It costs a lot actually. Is there any other alternatives than cost < 5$ ?
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Hi all, Should anyone face the same problem, I found the root cause: brownout threshold. I burned a new bootloader (Optiboot 8.0) without such trigger and the node has been working with used batteries (~2.7V) since May. Hope this helps.
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Please add the documents required by the CERN license used.

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