Search found 30 matches

by arao23
Wed Feb 01, 2017 3:11 pm
Forum: General Discussion
Topic: Going from the dev board to manufacturing
Replies: 8
Views: 3957

Re: Going from the dev board to manufacturing

Gotcha. If I use the WROOM 32 then for simplicity, how do you set up your test jig? I assume I'd need to make a pogobed that I can insert the PCB into, with pads on the board that connect to the appropriate pins on the module so that I can flash it. Anybody have sample Gerber data for this?
by arao23
Wed Feb 01, 2017 5:14 am
Forum: General Discussion
Topic: Going from the dev board to manufacturing
Replies: 8
Views: 3957

Re: Going from the dev board to manufacturing

Paladin wrote:I can help you with this. I've got a product development team.
Cool, how do I contact you in case I can't figure it out myself?
by arao23
Wed Feb 01, 2017 5:13 am
Forum: General Discussion
Topic: Going from the dev board to manufacturing
Replies: 8
Views: 3957

Re: Going from the dev board to manufacturing

It depends... if you use the ESP-WROOM32 modules, most you need is something (LDO, buck converter, ...) to generate a stable power supply that is in range of the module; a LiIon battery can hit 4.2V when charging, which is too much for the module. If you use the ESP32 separately, I suggest you look...
by arao23
Wed Jan 18, 2017 12:44 am
Forum: Hardware
Topic: Calibrating ADC
Replies: 5
Views: 3613

Re: Calibrating ADC

Thanks, that's not as nonlinear as I fretted, good to know.
by arao23
Mon Jan 16, 2017 8:19 pm
Forum: Hardware
Topic: Calibrating ADC
Replies: 5
Views: 3613

Re: Calibrating ADC

Bump! Any updates on this?

Maybe I should switch over to 8266 until 32 is more mature. It may not be viable for production use if ADC is nonlinear :/
by arao23
Tue Jan 10, 2017 11:30 pm
Forum: General Discussion
Topic: Going from the dev board to manufacturing
Replies: 8
Views: 3957

Re: Going from the dev board to manufacturing

Thanks :) I've looked at quite a few resources, so I have a basic understanding of the PCB making process (working on a gerber file at the moment for a SMD-based PCB), the assembly house requirements, etc., but I'm still unsure what components the ESP32 itself needs. Someone mentioned external flash...
by arao23
Tue Jan 10, 2017 8:27 pm
Forum: General Discussion
Topic: Going from the dev board to manufacturing
Replies: 8
Views: 3957

Going from the dev board to manufacturing

Excuse me for the rudimentary questions, I'm totally new to this. I've got a functioning project and I'd like to manufacture it. 1) What components will I need to go from a dev board to my own PCB? ESP32 module, a 3V3 LiPo battery, what else? Someone mentioned flash memory? 2) How would I flash the ...
by arao23
Tue Jan 10, 2017 1:46 am
Forum: Hardware
Topic: Calibrating ADC
Replies: 5
Views: 3613

Calibrating ADC

I read that analog inputs are nonlinear on the ESP32, and therefore we will have to manually calibrate it. How do we calibrate the ESP32 so that the values are read in correctly? I didn't have this problem in the proof-of-concept arduino project.
by arao23
Sun Jan 08, 2017 6:48 am
Forum: General Discussion
Topic: The analog input parameters for GPIO pins
Replies: 4
Views: 5296

Re: The analog input parameters for GPIO pins

Great info there. Thanks freeman :)
by arao23
Sun Jan 01, 2017 11:58 pm
Forum: General Discussion
Topic: The analog input parameters for GPIO pins
Replies: 4
Views: 5296

Re: The analog input parameters for GPIO pins

Hi kolban, thank you very much for your detailed answer! Okay, I get it now. I'm a software engineer, so this stuff is pretty much all self-taught for me. I love the analogy to Ohm's law ;) After a bit of scouring through the git repo, I found the specs. Looks like we can set the analog attenuation ...

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