So I just burned out another photon by putting the battery in backwards after charging. Can I put a diode between the bat and the photon to guard against this? if so what diode? thanks steve

@murmsk , how exactly are you connecting the battery to the Photon (which pins)?

Lots of diode types can be used for wrong polarity protection. I regularly use the B230 ( https://www.digikey.com/product-detail/en/diodes-incorporated/B230-13-F/B230-FDICT-ND/815328 ). Aslo used in many of the particle shields

@murmsk , though @joost provides a good recommendation, the bigger issue is that powering the Photon with a LiPo through a diode to Vin will drop the voltage by 0.5 volts. If you are using a fully charged 3.7v LiPo, the voltage at Vin will be 3.65v or just 0.5v higher than the minimum recommended vo…

[image] peekay123: It may be better to use a boost regulator to provide 5v to Vin instead OR use an LDO regulator to provide 3.3v directly to the 3V3 pin. Slightly OT: I believe that the Photon uses a 100% duty-cycle capable buck converter, meaning that the battery won't actually drop out unt…

Which diode should I use?

Troubleshooting

ParticleD November 6, 2018, 9:36pm 7

Another solution: https://store.particle.io/products/power-shield-with-headers

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Which diode should I use?

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