Search found 25 matches

by tvoneicken
Mon Jan 06, 2020 3:10 am
Forum: Hardware
Topic: ESP32-WROOM-32 flash mode and speed
Replies: 1
Views: 293

Re: ESP32-WROOM-32 flash mode and speed

Any suggestions for where to find an answer?
by tvoneicken
Fri Dec 27, 2019 11:03 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 345
Views: 117452

Re: What would you like to see in The Next Chip?

After spending a couple of days banging my head against auto-light-sleep I wish the next round of chips have a bit more thought put into low power operation. Specifically, I find the fact that most peripherals stop working properly in light sleep to be abysmal, the uart being the first issue that mu...
by tvoneicken
Tue Dec 24, 2019 3:50 pm
Forum: Hardware
Topic: ESP32-WROOM-32 flash mode and speed
Replies: 1
Views: 293

ESP32-WROOM-32 flash mode and speed

Do the ESP32-WROOM-32 (and -32D & -32U) modules all support the qio/80Mhz flash mode and speed? I'm not seeing any info about that in the datasheets.
by tvoneicken
Tue Sep 03, 2019 7:20 pm
Forum: General Discussion
Topic: built-in variable 'tweaker'
Replies: 1
Views: 364

built-in variable 'tweaker'

I'd like to build a simple command-line based debugging/hacking/tweaking tool to inspect and modify variables while a sketch is running into many of my sketches. My goal with this is to be able to connect to running systems and tweak some settings in real-time or see what state they're in. Similar t...
by tvoneicken
Sun Sep 01, 2019 4:27 pm
Forum: General Discussion
Topic: secure serial commandline over wifi
Replies: 0
Views: 321

secure serial commandline over wifi

I'd like to build a secure serial commandline into my esp32 projects but am a bit stuck with the protocol. Ideally I would set-up an SSH server on the esp32 and use that. The two options I've found so far for doing that are to use WolfSSH or to use libssh. WolfSSH uses its own WolfSSL crypto library...
by tvoneicken
Sun Apr 07, 2019 7:39 pm
Forum: Showcase
Topic: [info] Logging on esp32 using ring_log
Replies: 3
Views: 4100

Re: [info] Logging on esp32 using ring_log

This sounds very interesting, do you have any docs that explain how it works, or do I have the reverse-engineer from source code for that?
by tvoneicken
Wed Dec 19, 2018 12:20 am
Forum: General Discussion
Topic: ESP32 on Batteries - your setup
Replies: 50
Views: 27156

Re: ESP32 on Batteries - your setup

LiPo = Lithium Polymer, basically same chemistry as Li-Ion and 4.2V charge, so quite a bit out of spec. An esp32 won't instantaneously combust at 4.2V, but that's past my comfort zone... LiFePO4 is a different checmistry and charges to 3.6V, so OK, but capacity is quite a bit lower for the same volu...
by tvoneicken
Tue Dec 18, 2018 5:39 pm
Forum: General Discussion
Topic: ESP32 on Batteries - your setup
Replies: 50
Views: 27156

Re: ESP32 on Batteries - your setup

I haven't looked these switching regulators up, but in general their quiescent current is higher than that of linear regulators and if you're regulating down from a LiPo the voltage drop isn't all that big, thus LDO has little/no performance disadvantage when the esp32 is active but a big advantage ...
by tvoneicken
Wed Dec 12, 2018 7:16 am
Forum: General Discussion
Topic: How long can the esp32 run on batteries while remaining connected?
Replies: 6
Views: 1947

Re: How long can the esp32 run on batteries while remaining connected?

Thanks for the suggestions! :-) The arduino start-up doesn't add anything significant that I can detect. When I use the ESP-IDF example deep sleep app the scope traces look identical. One of my top uses for the esp32 is as a gateway, so it doesn't make much sense to build a battery operated gateway ...
by tvoneicken
Wed Dec 12, 2018 4:13 am
Forum: General Discussion
Topic: How long can the esp32 run on batteries while remaining connected?
Replies: 6
Views: 1947

Re: How long can the esp32 run on batteries while remaining connected?

Yes, if you look at the 13-post series I go into pretty great detail what is happening and where the power is going...
I have not tried mesh or esp-now. They're both cool but for me the interest lies in being able to connect to the ubiquitous wifi infrastructure...

Go to advanced search