[TriEmbed] Powering ESP32 from an 8v golf cart battery

[Jim Carlson]

I am interested in your work with the ESP32, in exchange. I have a small
power board based on the LT1935 that will support up to 2A at 3.3 v. It is
wide ranging and is a small 3/4” x 2” pcb with a 5 pin 0.1 inch centered
connector.

Jim Carlson

On Sun, Nov 15, 2020 at 8:59 PM Carl Nobile via TriEmbed <
triembed at triembed.org> wrote:

> You could just use an L7805. There is a TO192 package for this that can
> supply, I think, up to 100ma. If that's not enough current then use the
> TO220 package it can handle up to 1.5A.
> ~Carl
>
> On Sun, Nov 15, 2020 at 8:08 PM The MacDougals via TriEmbed <
> triembed at triembed.org> wrote:
>
>> Can’t find ams1117-3.3  TI’s L1117-3.3 is a direct replacement.
>>
>>
>>
>> The data sheet shows 15v (max) for Vin and nothing for min.  What am I
>> missing?
>>
>> https://www.ti.com/lit/ds/symlink/lm1117.pdf
>> <https://www.ti.com/lit/ds/symlink/lm1117.pdf?HQS=TI-null-null-digikeymode-df-pf-null-wwe&ts=1605410881526>
>>
>>
>>
>> ---> Paul
>>
>>
>>
>>
>>
>> *From:* Josh Wyatt <dragojdw at gmail.com>
>> *Sent:* Sunday, November 15, 2020 7:47 PM
>> *To:* paulmacd at acm.org
>> *Cc:* TriEmbed <triembed at triembed.org>
>> *Subject:* Re: [TriEmbed] Powering ESP32 from an 8v golf cart battery
>>
>>
>>
>> Why not use something like AMS1117-3.3? Minimum voltage on your 8 volt
>> battery is going to be something like 6VDC.
>>
>>
>>
>> -j
>>
>>
>>
>> On Sun, Nov 15, 2020 at 7:38 PM The MacDougals via TriEmbed <
>> triembed at triembed.org> wrote:
>>
>> How do I find an LDO that operates on 8 – 8.8 v?
>>
>> I looked at a couple of datasheets and found linear regulators that take
>> 9v (max) input.
>>
>> I did not see a (min) spec for input v.
>>
>>
>>
>> How can I tell if it works at 8?
>>
>>
>>
>> For example:
>>
>> https://www.njr.com/electronic_device/PDF/NJM2888_E.pdf
>>
>>
>>
>>
>>
>> ---> Paul
>>
>>
>>
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>
> --
>
> -------------------------------------------------------------------------------
> Carl J. Nobile (Software Engineer)
> carl.nobile at gmail.com
>
> -------------------------------------------------------------------------------
> _______________________________________________
> Triangle, NC Embedded Computing mailing list
>
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> --
Jim Carlson Sent from Gmail Mobile
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