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I know that some QA querists can be slow learners, but ... 
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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The ESP32 IoT SoC has great CPU power saving capabilities including a deep sleep mode which can take as few as 20uA according to the documentation. It's on a development board with LEDs, voltage regulators and whatever else so it draws quite a bit more than that in practice, but still it sips power in sleep mode.
Furthermore even while awoken the chip can run at different frequencies which you can set in software. As low as 2Mhz although in practice 80MhZ is the happiest "slow" speed and 240mhz is the max.
However, when I try to set the CPU frequency to a low setting the power use increases dramatically. I think by default it's 160mhz. Anyway:
without setting the CPU Freq:
goes from 2.5mA sleeping to 6.8mA when the CPU wakes to 9.3mA when the radio engages
with setting the CPU Freq to 80Mhz
goes from 2.5mA sleeping to 39mA when the CPU wakes to 42mA when the radio engages!
This is unacceptable and completely surprising. Looking at the espressif forums suggests their CPU change code is experimental but why even put it in if this is the result?
Real programmers use butterflies
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Apparently they expect their users to do the experiments. This attitude seems to be becoming more common.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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I don't know what the deal is. Over all this is an amazing chip, and a joy to program. I guess I shouldn't complain so much about this, but I'm trying to get it to the point where I can drop it in the woods for a week on a couple of AA batteries and let it log some stuff.
Real programmers use butterflies
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sell your stock, and return your swag 
seriously, i hope you are raising issues on the product forums, as well as on the Lounge your personal blog.
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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Funny how it's my personal blog when I rant about something but the posts below mine do the same thing and you have nothing to say. Gosh. It's almost like you're trying to start something again.
Maybe you need a hobby, Bill.
Real programmers use butterflies
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But, my Diva Assoluta, no one equals you in terms of sheer volume, and glass-ceiling shattering frequency 
Your latest articles are great !
«One day it will have to be officially admitted that what we have christened reality is an even greater illusion than the world of dreams.» Salvador Dali
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Looking at Power Management - ESP32 - — ESP-IDF Programming Guide latest documentation[^] I suspect what is happening is that, absent any explicit frequency setting, it defaults to a minimum power mode - "when the OS has nothing to do, light sleep." When you set CPU freq explicitly, it switches off that power saving.
(I can't find anything to back up what I'm saying; just the gut feeling of an old hardware guy.)
Cheers,
Peter
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Good find. You could very well be right. It's curious though that it would start out light sleeping, not that I mind. It's just, I intend to write several articles about this chip so I'm trying to figure out its major properties.
Real programmers use butterflies
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Wow, good point. 
"In testa che avete, Signor di Ceprano?"
-- Rigoletto
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Every time I reboot the PC and start Outlook, I now must re-enter the passwords for all 4 of the email addresses that it's configured to display. Every. Single. Time.
Yes, I check the "remember password" checkbox, but it has no effect.
This is very annoying. 
The difficult we do right away...
...the impossible takes slightly longer.
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 Wow!
In political double-speak: "So much winning!"
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This past Friday out of the blue, I was alerted that one of our hosted websites was 'down'. A quick check revealed that it was reachable with the static IP, pointing to a DNS issue. To double-check I tried it from a remote server and got the same results. WTE? It was working fine the day before.
I logged in to the registrar to make sure the domain name/account was still in good standing and it was. As it turns out, both of the name servers were unreachable. I hate changing these settings, so I put it off for the day hoping that it was just a temporary outage.
The next morning I checked again,.. still not working so I decided since it's the weekend, to go ahead and swap the unreachable name servers for a new pair and it's all working again, almost instantly in fact, despite the huge warning in big red font that changes will take from 24 to 36 hours.
If anyone else is using dynamicname.com name servers, you should check your stuff. I had hoped they would have 'resolved' their issues quickly but 2 days was too long for me to wait.
When I get a problem like this, it's just natural to understand what happened to cause it and what can I do to keep it from happening again. So here, I see the weakness as having both name servers at the same domain...but (someone please correct me if I'm wrong!) that seems to be the rule. I searched through a dozen or so articles for guidance. All of the examples show the ns differing only by the server name. (domain staying constant) This seems to make sense as I would think there is a local cache between the primary and secondary's, but I'm a programmer, not a network specialist! 
So I've got it working with the registrar's recommended named servers, which are just sequenced names to the same domain. If that domain goes down, I'll be in the same situation as before. Is it OK for me to use another registrar's (or even Googles') DNS as a secondary? (or just add it to the chain) Probably not, but I can't seem to find a source that tells me it can't be done. BTW, the original name servers setup for that domain had been reliable for 20+ years, so it's not like it's a common thing.
This answers last week's survey...'Who does your IT support?'
"Go forth into the source" - Neal Morse
"Hope is contagious"
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Not an expert here but if both are pointing to the host site why not change the second one to googles DNS server?
I mean - if your DNS is down - that's bad. If Googles DNS is also down - then access to your site is probably the least of your(and our) worries!
If you can't laugh at yourself - ask me and I will do it for you.
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And you refer this or what? The Lounge[^]
It does not solve my Problem, but it answers my question
Chemists have exactly one rule: there are only exceptions
modified 19-Jan-21 21:04pm.
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Yes 
modified 3-Jun-21 21:01pm.
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Yesterday we went for a walk in the woods near the "Hans & Grietje" (Hansel & Gretel) restaurant, but that turned out to be a bad idea. The restaurant was closed of course, which was to be expected, and after the heavy rainfall of the last weeks the grounds were very muddy.
The first part was ok with a nice concrete path, but then we decided to take a shortcut back and got into muddy terrain.
Our progress was slow, but after hours of plowing through the mud we finally got back to the starting point.
Luckily it did not rain and we managed to get back before dark, and did not fall into the hands of a cannibalistic witch, phew 
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You should have dropped stones along the way as markers.
(Bread didn't work that well, as I recall the story)
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Or even better: get stoned
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That's nice everywhere except the Middle East.
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Rumour has it that you can get some very good marijuana in this part of the world.
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.
-- 6079 Smith W.
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Classic! 
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