For the new module, does anyone know what āflavorā of ESP32 is? I want to know if it has external PSRAM or not.
If they donāt respond I do have one if you know how to tell?
Hey everyone, just a quick announcement for anyone interested in this ESP32 Board:
We will be offering these through CrowdSupply platform soon. Check it out:
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From Josh link it seems to be the one without PSRAM
Just got mine yesterday. Running through the examples for the first time today. EPIC!!! I love it! Now I can connect to the app I wrote for iPad specifically catering to my Subaru BRZās PIDs and not have to be paranoid about the security of the connection.
Come on now, letās see this app. Preferably in action.
Once school is done (In like 14 hours) My security competition is done (April 29th) and my court jury duty is done I will be jumping on this stuff. Getting some basic connectivity with this module will be one of my first projectsā¦ 
I will be sure to post results when I get that far.
Sure you donāt want to see the iPad powered-off and face down?
Ya sure, Iāll get screenshots the next time Iām in the car. It works with any standard OBD-II WiFi dongle, as all Iāve encountered sing to the tune of 192.168.0.10, Iām assuming thatās standard.
When will the Crowdsuply campaign start?
A crowdfunding campaign arrives exactly when it means to. The date is not set yet but we are hoping to launch it soon. As soon as we have a date we will announce it here.
Kudos for the Lord of the Rings reference. 
I got one of the very early prototype boards long ago and never did anything with it. Well, since SavvyCAN supports wifi based connections now I thought Iād try it out. My first impression is that itās a huge pain in the rear to program that thing. I found out two things the hard way:
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You apparently canāt use the same Arduino IDE instance to both flash the M2 sketch and the ESP32 sketch just by switching the board type. It locks up the M2. I had to start two copies of the Arduino IDE and have one set to the M2 and the other set to the ESP32 both targetting the same serial port. This is in LINUX so I donāt know if Windows has this issue.
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For some God forsaken reason I canāt start the M2 with the ESP32 module plugged in. Nothing ever happens and the M2 is even locked up. I have to plug the M2 in then push the ESP32 module into the XBee slotā¦ every time I plug the M2 into USB. This gets old. It especially gets old since after uploading a ESP32 sketch it locks everything up and I have to power cycle the m2. Basically any time a butterfly in Brazil flaps its wings I have to power cycle and start over.
I suspect I might have a faulty module. Perhaps I didnāt do it any favors by accidentally letting it roll around in my tool bag for 5 months. But, I like this design better. Thereās a nifty micro connector for an external antenna. I like this. PCB antennas are all garbage, I donāt care how well anyone tried to tune them. They donāt work worth squat. The SuperB uses the WROOM32 module which usually doesnāt have a connector and uses a PCB antenna. Itād be cool to offer the version that supports external antennas as such a version does sort of exist - good luck finding a good source for them.
Anyway, I did eventually get it to sort of work for programming so Iāll get some test code together to make the ESP32 create a known AP that you can then connect to with a telnet program or SavvyCAN to gain access to the M2 wirelessly. Just thought Iād share my struggles in case I could help someone else if they have those issues too. Hopefully I just have damaged hardware or something and nobody else is running into the problems I did.
Hi Collin
Your not alone with the issues of programming the ESP via the M2. I have a similar unit as you do & its not that your unit was rolling around in your tool bag.
Programming using windows after installing a slightly modified pass through program on the M2 & setting the M2 into pass through mode I then needed to use Espressif IDE to upload to the ESP32 module.
I then found as you have that the M2 locks up or if a Moth flies over the shire it locks up.
I would be interested to know what you have done to get around the lock up.
After all of the above problems i shelved it & went onto other projects i have on the back burner now that Savvycan supports TCPIP you have rekindled my interest in the ESP.
I also agree on the miniature aerial connector is a good idea as i will be permanently installing the M2 in the car (metal & glass box) which is not the best for radio signals.
any way enough ranting. On the side i have tried enabling the SPI interface between the ESP & the M2 to try & get away from the serial interface between the M2 & the ESP. The reasoning behind this was 2 fold
1 Faster interface between the M2 & ESP
2 Possible programming the ESP via the SPI interface
So fare no success.
Would be interested in the code you have got working so far if your able to share.
Regards Tony
Is this an issue just with the new boards? I have both the production and the beta board.
Have not had the chance to play with the production board yet but the beta board I had no issues with. Just had to program the module using the Espressif IDE and its good to go. I had it plugged into my M2 for over a month and used it without issue and was able to talk to the Beta module and get good responses.
In a few days I will be revisiting this and getting the up to date version running on both modules. Or attempt to anyhow. Are you guys just having issues with the production board?
No, the one Iām using is an old red one. Itās been a stinker but it very well could be my machine. Maybe linux doesnāt like something, I donāt know. When I flash the uploader sketch to the M2 sometimes itāll let me push the buttons and I can see the red and yellow light so the sketch is running. But, USB comm is not working unless I donāt have the ESP32 attached when I plug in. It might be the machine too - Iām doing this on a laptop and they donāt always support quite the same amount of power out the USB ports as a desktop machine would. It could be a power surge issue.
Might be your USB cable too. I have had issues with some boards with certain USB cables. I have not had any issues with my M2 but if you continue to, you may want to try a different brand of cable.
Hey @CollinK, letās get you a new board. That red board is pretty old by now.
Just to verify, I followed my instructions here and could program the SuperB no prob.
Maybe those instructions are just hard to find.
Hard to find, maybe a bit. Speaking of good examples of why a pinned post at the beginning with updated info would be handyā¦
But, I found and followed the directions. Still things went pear shaped for me. Several monkeys and coconuts were seen in the vicinity. A variety of pooches were screwed. So, something else is going on for me. But, I still did manage to get the ESP32 programmed. It just was much harder than it was supposed to be.
Ok, Iāve gotten it to work more reliably for me. Iād like to go over what I did wrong:
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My USB cord does indeed seem to have been problematic. It appears I can reliably connect and disconnect the M2 with the ESP32 module installed so long as I use a good USB cord. The one I was using was short and bulky and I thought that was a good sign. Well, looks are deceiving. Now Iām using a longer, thinner cord that works fine. Always suspect your USB cables of turning on you - those little traitors. Donāt trust it just because it usually seems to work.
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I really cannot switch directly between opening the serial console in M2 mode and in ESP32 mode. If I try to do that with one Arduino IDE instance open it acts funny. The best bet for me really is to have two Arduino IDE windows open, one for the M2 and one for the ESP32. This might only matter on LINUX.
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Donāt forget to change your ESP32 settings to DIO, 40Mhz, 2MB, 115200 upload speed. I use other ESP32 boards that can handle QIO, 80Mhz, 4Mb, and 921600 upload speed. Those settings donāt work with this board. Whatās worse, they lock up the M2 sketch as well. Using the proper settings works. So, if you forget to change something like the upload baud rate youāll have a bad time. This is probably less of an issue for people who arenāt programming 20 different boards.