ESP8266 Community Forum

- Tue Dec 15, 2015 2:55 pm #36511 http://www.ebay.ca/itm/Mini-3A-DC-DC-Co ... 1451400661
or even cheaper :
http://www.ebay.ca/itm/2X-Mini-3A-DC-DC ... 1864881672

Those are "step-down" only, I don't know if it will meet your needs ...
(BTW, you still need to add a capacitor nearby the ESP.)

- Tue Dec 15, 2015 3:21 pm #36514

http://www.ebay.ca/itm/Mini-3A-DC-DC-Converter-Adjustable-Step-down-Power-Supply-Module-replace-LM2596s-/371451400661
or even cheaper :
http://www.ebay.ca/itm/2X-Mini-3A-DC-DC ... 1864881672

Those are "step-down" only, I don't know if it will meet your needs ...
(BTW, you still need to add a capacitor nearby the ESP.)

Those say they want a minimum input voltage of 4.5. Could be problematic?

- Tue Dec 15, 2015 3:41 pm #36518 Sorry, I didn't pay attention to your battery voltage, since many time people are using 2 LiPo in series and use a step-down converter. If you are using only 1 battery, then you need both a step-up AND step-down converter, but more expansive, like the one you provide links, but there still some cheap one on eBay :

http://www.ebay.ca/itm/DC-DC-Boost-Buck ... 2034180830

Personally, I would prefer going with double-battery.

- Wed Dec 16, 2015 9:52 am #36582 Thanks for the answers.

EDIT : sorry, I didn't noticed the second page initially.

For the question of why running leds from a regulated output, it's only to benefit from a higher voltage to gain brightness.
It's not a must have, just a little gain.

Intersting for cheaper polulu style regulators, I think it would be the best option actually.
If you find any link please share it

Otherwise, I think I'll test with usual buck converters.
I think the gain from the 3v / 3.3v voltage range would be not noticeable and this way I'll protect my Lipo from over discharge.