ESP32 in Pre-Order

FYI …

I’ve placed my order !

http://www.aliexpress.com/store/product … 62265.html

Very nice! The price of new ESP is awesome… taking account that this is preorder and the product is very new. I was waiting the new chip to be more expensive.
All are trying to find the ESP killer… The ESP killer is the ESP, period. The price difference from ESP8266 is very short making the old chip obsolete for small quantities.

Got me too!

Ray

I am trying to hold myself…
It is better to stay with the nodeMCUs and waiting for a full board/module (with usb and core components) with esp32.

I’ve bitten as well.

It could of course just be a scam

Slammer wrote:I am trying to hold myself…
It is better to stay with the nodeMCUs and waiting for a full board/module (with usb and core components) with esp32.

Slammer wrote:It is better to stay with the nodeMCUs and waiting for a full board/module (with usb and core components) with esp32.

RogerClark wrote:<…>
with the aid of some hot glue and wires

Ray
i’ve seen a bottle of glue + spray can for the hardener system. they used it on my pvc window framing, 10yrs or so ago
istr spray was really toxic.

any chance of brand or link? aliexpress??

uv laser as the second extruder? although that might defeat the object.

stephen

zmemw16 wrote:
<…>
any chance of brand or link? aliexpress??

Interesting !
I’ve search on eBay for cheaper one and found some, although maybe the quality isn’t the same in China …

http://www.ebay.ca/sch/i.html?_odkw=rap … v&_sacat=0

martinayotte wrote:Interesting !
I’ve search on eBay for cheaper one and found some, although maybe the quality isn’t the same in China …

Oh ! Maybe I’ve placed my order too soon on AliExpress (it seems that we will get some beta ESP31) :

http://esp32.com/viewtopic.php?f=2&p=61 … 3dec2#p617

One trick I use with hot glue, is to reheat it with my reflow station hot air gun.

If you set the reflow to its lowest temperature (100 deg C) on mine, you can carefully melt hot glue to either take stuff apart again, or help the glue flow into locations that it didnt get to in the original application.
You can literally blow it around to some extent, and you can also get rid of the whispy stringy end bits.

Also i find it handy to have various colour of hot glue. I have clear and white and have some black on order.

martinayotte wrote:Oh ! Maybe I’ve placed my order too soon on AliExpress (it seems that we will get some beta ESP31) :

http://esp32.com/viewtopic.php?f=2&p=61 … 3dec2#p617

Hi Ray

I got the same email, so I extended the time

Its a little unclear what we will be getting, but I’ve wasted more money on Spark Photons and EWM3165’s, neither of which I’ve used at all.

RogerClark wrote:Hi Ray

I got the same email, so I extended the time

Its a little unclear what we will be getting, but I’ve wasted more money on Spark Photons and EWM3165’s, neither of which I’ve used at all.

mrburnette wrote: However, if one looks at concrete, it is fully of rocky contaminants and it works well.

zoomx wrote:mrburnette wrote: However, if one looks at concrete, it is fully of rocky contaminants and it works well.

Sorry!

Just a thought, but is there a breakout board for the ESP32 that can be bought separately

I’ve noticed that the original beta testers had an ESP32 on a breakout, but I can’t see who made that breakout or whether it was available separately

If not, I suspect its probably a good idea to design a breakout now and get it manufactured, in time for when the ESP32’s are actually available

I was thinking that it should include a USB to serial converter and if necessary the program and reset buttons – however I’m not sure if the ESP32 has the same upload system as the ESP8266

RogerClark wrote:Just a thought, but is there a breakout board for the ESP32 that can be bought separately

Its a bit unclear what the modules will look like, I’m not sure if the images shown on AliExpress are just a mockup

Anyway, I found this kicad symbol https://github.com/morganrallen/esp32-kicad/

But whether it matches with what I have ordered from AliExpress is hard to know at the moment.

I guess I could take a punt and design a breakout board using that footprint.

Yes, the breakouts were provided by Espressif as part of the Pre-Christmas Beta shipments.
(Remember that I was this little guy crying under the Christmas tree because I didn’t received one of those gifts … )

I presume that when real production start, Espressif will make the breakout design available, if it is not already.

If there could be a “dream” breakout board for ESP32, in addition of USB UART and RST, I would like to see a level shifters for the old 5V world.

Are there any recommendations for level shifters for high speed communication? With brute force resistor chains the speed is limited in kHz range. What could be used for 20 MHz communication?

Cheers, Ollie

Simply use traditional MOSFET method :

Ollie wrote:If there could be a “dream” breakout board for ESP32, in addition of USB UART and RST, I would like to see a level shifters for the old 5V world.
<…>

Hi Ray,
But here, we are talking about ESP32, so I don’t think there is a single pin that are 5V tolerant …
The small 4 channel shifters, that you’ve provided link for, are in fact 4 times the schematic I’ve provided.
So, about cost issue, it is maybe relevant to put it on such breakout board since they are only taking PCB real-estate and can be overriden when not needed by simply avoiding the mosfet and pullups and placing a 0R shunt instead. Still the cost of such mosfets is less than 3 cents.
Of course, there is no need to provide such circuits on every GPIOs, but only relevant ones, such port for OneWire, some Serials but maybe only one.
So, it all depends of the projects. For example, on my F405, I’ve done it for OneWire, simply because it is enhanced the signals on long wires.

martinayotte wrote:Hi Ray,
But here, we are talking about ESP32, so I don’t think there is a single pin that are 5V tolerant …
<…>

The 2N7000 is proven technology for level shifting. Any comments about the TI TXS0108E. It is not too expensive – lot of 5 costs $3.70. With 8 channels per chip, it is $3.70/40 per channel, around $0.09. My preference is to use the chips instead of large number of components.

Cheers, Ollie

Ollie wrote:<…>My preference is to use the chips instead of large number of components.
Cheers, Ollie

I agree with Ray

The world has moved on… 3.3V is the norm.

I see no point in having level shifters.

If someone has a requirement to use a 5V technology, the would need a separate OneWire to 3.3v converter as part of their OneWire interface.

In much the same way as for other transmission line technologies.

RogerClark wrote:I agree with Ray

The world has moved on… 3.3V is the norm.

I see no point in having level shifters.

stevech wrote:RogerClark wrote:I agree with Ray

The world has moved on… 3.3V is the norm.

I see no point in having level shifters.

madias wrote:stevech wrote:RogerClark wrote:I agree with Ray

The world has moved on… 3.3V is the norm.

I see no point in having level shifters.

racemaniac wrote:
<…>
lol, have the exact same lying around, haven’t needed them yet

mrburnette wrote:Yep. I have 49 in a box and 1 on the bench gathering dust. But that the way it goes … buy a bunch of something and be assured you will not need it. In my case, I gather up older, unused stuff once a year and go down to Stone Mountain Hamfest to recycle same. Sometimes it works and I take the proceeds and buy more “maybe” things. My hobby is my personal way of helping out in the global economic crunch!

WereCatf wrote:
<…>
I heartily approve of recycling electronic stuff instead of throwing away.

I quite like the DMA-engine on the STM32, it sure makes bulk-transfers over SPI so much faster; ESP8266’s 64-byte FIFO just can’t quite compare, unless you’re writing patterns of 64 bytes or less, and even then you can’t queue it to happen in the background while your code is doing something else. I tried googling for it, but I can’t seem to find any information on whether the ESP32 has a DMA-engine capable of driving the SPI-bus

I really quite want a combination of both the STM32 and ESP8266 — built-in WiFi, 80MHz (or higher) SPI-bus and lots of RAM, but also lots of I/O and a proper DMA-engine.

WereCatf wrote:I quite like the DMA-engine on the STM32, it sure makes bulk-transfers over SPI so much faster; ESP8266’s 64-byte FIFO just can’t quite compare, unless you’re writing patterns of 64 bytes or less, and even then you can’t queue it to happen in the background while your code is doing something else. I tried googling for it, but I can’t seem to find any information on whether the ESP32 has a DMA-engine capable of driving the SPI-bus

I really quite want a combination of both the STM32 and ESP8266 — built-in WiFi, 80MHz (or higher) SPI-bus and lots of RAM, but also lots of I/O and a proper DMA-engine.

racemaniac wrote:I keep wondering why everyone keeps looking at dma just for the speed. It not happening on the cpu is for me the most amazing part. I’ve got code steering a 144 neopixel string at 215 fps, basically continuously sending it data (>99% of the time), and hardly using any cpu cycles since it’s all DMA XD.

racemaniac wrote:
I keep wondering why everyone keeps looking at dma just for the speed. It not happening on the cpu is for me the most amazing part. I’ve got code steering a 144 neopixel string at 215 fps, basically continuously sending it data (>99% of the time), and hardly using any cpu cycles since it’s all DMA XD.

RogerClark wrote:racemaniac wrote:
I keep wondering why everyone keeps looking at dma just for the speed.

However it seems to be the Arduino methodology to use blocking functions most of the time.

Sidenote: Getting cheaper and cheaper already

For just 3,40€

RogerClark wrote:
<…>
Using DMA allows the processor to be more efficient and effectively multitask. However it seems to be the Arduino methodology to use blocking functions most of the time. But we are free to add non blocking functions to the libmaple core, I just don’t have time to write the code myself

strawberrymaker wrote:Sidenote: Getting cheaper and cheaper already

I agree, NodeMCU (and similar variants) is the best way to play with esp8266 in 99% of cases (I exclude only the extra low powered applications).
I will be waiting the NodeMCU version for ESP32….

Agreed.

I am going to order some more of those NodeMCU clones as they worked fine with the Arduino IDE as soon as I selected the correct board type.

FYI
There is a kickstarter project for ESP32. As far as I can see it is the same layout as the NodeMCU board.
It is the same guy who tried to fund the EMW3165 board on KS.

https://www.kickstarter.com/projects/85 … =discovery

There is not only NodeMCU, but also Wemos-D1-Mini that works fine and has few shields such MicroSD.

@Erni Isnt that just a Kickstarter for the SDK? They just show of the NodeMCU Board with the ESP8266 and the dev board that got released with the ESP32

The way I read it, it is both.
But it is not a very clear description of the project.

This Kickstarter campaign is different from the exist software-only project, we provide not only source code but also hardware for backers to speedup development.

Another thing is that it is not likely to be funded, only about 7% raised in 37 days.

… and if you throw away the software, there is no need to pay twice the price of the real hardware price (I presume such boards will be priced around $9)

I’ve just noticed a different seller offering pre-order ESP-32 at aliexpress.

They cost $14 for two.

The item title, “2 pcs lot free shipping preorder esp8266 bluetooth wifi module esp32” is a bit worrying, but the blurb insists it is for ESP32.
They say delivery August, and ask for delivery to be extended o 90 days.

It looks like it is bare QFN48 chips, not modules. So the price isn’t justified !

Just received an email from AliExpress:

Status:
The seller has shipped your order

So the long trek begins … according to the new product page, 231 of these little suckers should be making their way out of China, so maybe my 2 will not be lonely until they hit U.S. Customs.

Ray

Yes, I’ve received the same notification yesterday.

Unfortunately I have not had any emails, and I may have made the mistake by extending the processing time, as it was about to expire on Monday, so I extended by 26 days.

I guess it doesnt really matter, I doubt I will use the module any time soon, as I have so many other ongoing projects

I finally received notification that my ESP32’s have been posted today.

So I won’t be receiving them until well after everyone else.

But until a few more people are using these, I suspect its going to be fairly tough to use them, especially the Bluetooth side of things

I do wonder if anybody has received their ESP32.

I made two orders (2×1 + 1×5) and got the following shipping confirmations
– on 7/15/16 for the 1×5 to be delivered in 15-40 days with dispute date on 9/13
– on 7/28/16 for the 2×1 to be delivered in 15-40 days with dispute date on 9/25

Cheers, Ollie

Oillie

I don’t think anyone should receive them before you, as your items were posted a week before both Ray’s and Martin’s order.

What I find strange is why they didn’t post mine off on the same day as Ray’s (and Martin’s), rather than almost 3 weeks later.

Last week, the status was enroute to Customs in USA. The shipping was shown as USPS after Customs release. I have not received yet, but this morning the status (from AliExpress) was not-found, which generally means IN Customs or beyond. USPS eventually gets things done, but they are not particularly “fast” …

Ray

Has anyone received there esp32’s yet.

No one on this forum has posted that they have received them.

Mine only got posted last week, so won’t be here for ages

I doubt that those shipments are actually shipped, since even Espressif didn’t received the silicon yet, they should receive them this week and then they will finalize testing.

http://esp32.com/viewtopic.php?f=2&t=172#p792

..long way to go..

LOL

So what are they supposed to have sent to us ?

Perhaps the Aliexpress vendor just sent us those notifications to prevent the order being cancelled, as they know that china post can take months to ship stuff, so they have several weeks in hand before anyone really knows that they didnt post it.

Yes ! that is what I think …
The parcels will be shipped only in about 2 or 3 weeks from now.
They just borrow some time before any dispute.

I actually had to extend the time again, as I noticed about 2 days before the expiry of the extended processing time that they’d not posted them

I’m not sure why they decided to pretend to send them 2 weeks after I’d extended by the max of 26 days, as they still had around 10 days to go before that extension was over.

If they are claiming they have sent them Ali Express will automatically pay them after the stated delivery period. I would suggest anyone who is getting close to this deadline open a dispute or extend it or they will be paid.

I had to extend my initial deadline even before they theoretically got sent.

But I would agree, this is looking more and more like a scam, so open a dispute as soon as it is overdue.

RogerClark wrote:I had to extend my initial deadline even before they theoretically got sent.

But I would agree, this is looking more and more like a scam, so open a dispute as soon as it is overdue.

My ESP64 pre-order:
Awaiting delivery
Your order will be closed in: 2654 days 3 hours 12 minutes

mine just got automatically cancelled

Mine still have 84 days …

Looking at Twitter account @ESP32net, the official release date should be tomorrow…

Mine says

35 days 22 hours 46 minutes

These numbers seem quite random. I would have thought my number would be higher as I had to extend even before they claimed to have posted it to me.

https://en.wikipedia.org/wiki/ESP32
“Release date September 1, 2016”

it would seemed that this isn’t a ‘production release’ more like the ‘sample runs’ i.e. possibly a new fabrication line
my suspicion could be that production / engineering challenges may be part of reasons for a possible hold back
i read some articles from intel about the skylake chips, yields initially may be poor & problems need to be fixed

SeeedStudio are now advertising the module

http://www.seeedstudio.com/ESP3212-Wifi … -2706.html

They are out of stock but claim the next batch will be 23rd Sept

The price is more than amazing *wow* and much less I thought. Congrats Espressif. Think about the price after the first run is over, I guess about 4-5 bucks after one year.

martinayotte wrote:FYI …

I’ve placed my order !

http://www.aliexpress.com/store/product … 62265.html

Guys

My purchase protection was going to run out in the next week, and they claimed to have dispatched weeks ago, so I’ve pulled the pin and opened a dispute asking for a refund.

I think the whole thing could be a scam, as they could never have shipped any boards when they claim to have, as the Espressif had not manufactured the devices at that time.

I’ll let you know what happens.

At the moment I don’t think I’ll bother to order any replacement, as I’m swamped with work and also things that need to be done for the STM32, as well as my other areas of interest e.g. Nordic nRF51 as well as laser cutting etc etc

We are ready to ship the ESP32 module
https://www.youtube.com/watch?v=_Fm-0fNjt6E

ESP32 chip, module, development board, please click here.
http://analoglamb.com/shop/esp32

RogerClark wrote:Guys

My purchase protection was going to run out in the next week, and they claimed to have dispatched weeks ago, so I’ve pulled the pin and opened a dispute asking for a refund.

I think the whole thing could be a scam, as they could never have shipped any boards when they claim to have, as the Espressif had not manufactured the devices at that time.

I’ll let you know what happens.

At the moment I don’t think I’ll bother to order any replacement, as I’m swamped with work and also things that need to be done for the STM32, as well as my other areas of interest e.g. Nordic nRF51 as well as laser cutting etc etc

@AnalogLamb

Thanks.

Perhaps if I get a refund I will buy 1 board from you instead

What does it mean the “S” in ESP-32S, plz??

Espressif has shown a lot of engineering excellence, but in marketing and communication there are major challenges. I have my own understanding about the different versions, but those could be wrong and I will not show them here. I think that the following are different products
– ESP32
– ESP3212
– ESP32S
– ESP32-WROOM-02
– ESP32-WROOM-03

Cheers, Ollie

Pito wrote:What does it mean the “S” in ESP-32S, plz??

Just a note for anyone else who ordered the ESP32 module though the same AliExpress vendor.

The vendor didn’t bother to respond to the dispute (that I had not received the item and its well overdue), so AliExpress have settled the dispute in my favor and will refund me (eventually)

Looking back at the transaction record for the item, the vendor claimed to have sent the item on 7th Aug (over 2 months ago), but when I now check the tracking code, which they originally sent back in Aug, and didnt work at the time, I find that the item is showing only as

Electronic Data Received
on 08/08/16

Normally when I get things shipped via courier, this sort of status indicates that the paperwork has been lodged, but nothing has been collected.
But in the case of China post, I don’t really know.

As its now 2 months since they claim to have posted it, and since no one else has received from this supplier, I suspect they never posted it at all, as they never had the item to post in the first place.

Fortunately, I still have 3 weeks to open a dispute.
I still hope to receive the modules, but I’m afraid it won’t since they lied to us from Day1.

Martin

I had about a week before my purchase protection.

You could just try contacting them, as they didn’t even bother replying to my dispute, hence AliExpress settled on my behalf

It is not a scam. I got my two ESP32 modules today. Perhaps I will get my five modules on nxt week that I did order one week later.

Cheers, Ollie

A recommended book for all ESP32 developers is Kolban’s Book on the ESP32 & ESP8266. I got most of my ESP8266 info from his original book. The recommended price ($4) is a good bargain for this brick of solid information.

Cheers, Ollie

Prolonging protection time on ali is also an option.
Offtopic: Meanwhile I only use the “registered mail” option (mostly only 1 Euro more) and it’s really faster and I have a drop out rate of 0.

It seems that there is a node MCU 32 for those who want a breadboard friendly development experience. It ain’t cheap though $24 ish but if you want ahead of the pack and get your design ready for when the ESP32s are cheaper its not too bad.

https://www.aliexpress.com/item/NodeMCU … 24128.html

Arent the ones from AnalogLamp similar and cheaper

RogerClark wrote:Arent the ones from AnalogLamp similar and cheaper

There are also backplates appearing they are much cheaper on TaoBao $0.80 they will probably drop to $1 on aliexpress when the newness goes away.

https://www.aliexpress.com/item/ESP-32- … 45924.html

I just got a notice that Spark Fun’s ESP32 Thingy is in stock. Of course time has passed since I got the email. lol I can’t get one at this time but in case you’re dying to get ahold of one.

Enjoy
Michael

The SparkFun ESP32 Thingy is in back-order at the moment. For US boards, my preference is Adafruit ESP32 Development Board for $15, although it is out of stock.

I have not yet received my AnalogLamb ESP32 development board, which uses the capsuled ESP32s instead of the plain components used in SparFun and Adafruit boards.

Cheers, Ollie