Search found 97 matches

by rdagger
Mon May 11, 2020 6:31 pm
Forum: ESP32 boards
Topic: ESP32 and LilyGo TTGO T Call
Replies: 17
Views: 947

Re: ESP32 and LilyGo TTGO T Call

Here is the latest version of the board I am using. I am actually on an earlier development prototype of this but it should be identical in terms of capability and code. https://www.aliexpress.com/item/4000832675119.html I have a ton of code written for this. Anything in particular you want? I woul...
by rdagger
Mon May 11, 2020 5:37 pm
Forum: ESP32 boards
Topic: ESP32 and LilyGo TTGO T Call
Replies: 17
Views: 947

Re: ESP32 and LilyGo TTGO T Call

Yes for sure. I have the entire project running on micropython. I made my own module for interacting with the modem Simcom 7000g in my case via AT commands through the UART of the ESP32. It took me a while but it is very stable right now, especially with the new uasyncio lock and event features. Pl...
by rdagger
Thu May 07, 2020 5:50 am
Forum: Hardware Projects
Topic: Pwned Password Checker
Replies: 1
Views: 408

Pwned Password Checker

I created a portable wireless device with a color touch keyboard to test passwords against the haveibeenpwned.com REST API using MicroPython and an ESP32.

YouTube Video: https://youtu.be/NJuOkSSfgUQ
Pwned Password Checker.JPG
Pwned Password Checker.JPG (275.91 KiB) Viewed 398 times
by rdagger
Sat Apr 11, 2020 3:28 am
Forum: ESP32 boards
Topic: Add SPIRAM to WROOM32
Replies: 7
Views: 676

Re: Add SPIRAM to WROOM32

I found a better implementation of urequests that supports response.iter_lines(). Everything is working great now!
by rdagger
Sat Apr 11, 2020 2:40 am
Forum: ESP32 boards
Topic: Add SPIRAM to WROOM32
Replies: 7
Views: 676

Re: Add SPIRAM to WROOM32

Thanks for your response. Please let me know if it works.
Here's my board. Is it possible to check the flash voltage without removing the shield?
by rdagger
Sat Apr 11, 2020 1:41 am
Forum: ESP32 boards
Topic: Add SPIRAM to WROOM32
Replies: 7
Views: 676

Add SPIRAM to WROOM32

I've built a small handheld project using an older Wemos Lolin32 (no SPIRAM). Unfortunately, after beta testing I realized the urequests class is running out of memory. I tested the code on a newer Lolin32 Pro (4 MB of SPIRAM) and it works much better. Everything is 3D printed and soldered together....
by rdagger
Mon Mar 09, 2020 6:10 pm
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 636

Re: Touch screen recommendations

Another super interesting way that I have made a really nice interface was when using ESP32 it hosted an webpage with the needed interface and I could just use any browser on any phone or tablet to input anything that I needed. I agree but my application has a security aspect that precludes a web i...
by rdagger
Sun Mar 08, 2020 11:47 pm
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 636

Re: Touch screen recommendations

Capacitive touch would be preferable but not necessary because I probably will not be typing more than a dozen characters at a time. I would definitely consider writing a python library for the FT80x but another forum member posted that the interfacing was harder than he thought. The Nextion knockof...
by rdagger
Sun Mar 08, 2020 11:19 pm
Forum: Drivers for External Components
Topic: FTDI EVE touch display driver?
Replies: 3
Views: 2180

Re: FTDI EVE touch display driver?

Do you have any MicroPython code you could share for the FT80x displays?
Would you please explain why it was difficult to interface.
by rdagger
Sun Mar 08, 2020 1:39 am
Forum: General Discussion and Questions
Topic: Touch screen recommendations
Replies: 6
Views: 636

Touch screen recommendations

I’m starting a project that requires an LCD touch screen keyboard like on a mobile phone. The screen should probably be at least 3 inches wide. I’m considering the following: 1. FTDI EVE FT800 using Lobo build on ESP32. You can get a 4.2” screen on eBay for $32 with very fast graphics, but I don’t r...