Author Topic: Incorrect power connection. Can fried Moteino be recovered  (Read 3035 times)

perky

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Re: Incorrect power connection. Can fried Moteino be recovered
« Reply #15 on: August 28, 2019, 05:59:18 PM »
I'm still concerned that VIN is being connected to the 5V on the FTDI connector and the battery.

savan8192

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Re: Incorrect power connection. Can fried Moteino be recovered
« Reply #16 on: August 29, 2019, 06:52:44 AM »
I'm still concerned that VIN is being connected to the 5V on the FTDI connector and the battery.

Hi Mark,

Not sure what exactly you mean.

But I can confirm that Battery voltage applied to Vin will be available at FTDI header pin (see the image below). You may be right the voltage regulator would have worked as a shunt if FTDI adapter is connected as well. That's what I will keep in mind and make sure I don't connect FTDI adapter if Moteino is connected to the battery. Snapping a power pin from the connector maybe a solution but I think in that case Moteino has to be kept connected to battery when programming via FTDI adapter.

Hope this explains my understanding.

Thanks


perky

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Re: Incorrect power connection. Can fried Moteino be recovered
« Reply #17 on: August 29, 2019, 02:29:50 PM »
I think it might be possible to add a schottky diode between the FTDI +5V and the socket pin on the FTDI connector. That should allow programming as well as terminal output while the battery is still connected to VIN, and the FTDI would provide the +5V through the diode if no battery was fitted.

Mark.