Search found 8 matches
- Tue Mar 01, 2022 2:44 am
- Forum: General Discussion
- Topic: UART high speed question 4MHz
- Replies: 7
- Views: 9495
Re: UART high speed question 4MHz
Hi, I read this (original) post some days ago, but now I decide to share something about my experience. I am interested with UART communication on the ESP32, and so I did some basic tests, nothing very systematic, and was only able to get stable serial to work at about 460 Kbaud... (Arduino IDE code...
- Sat Feb 26, 2022 7:26 am
- Forum: Hardware
- Topic: ESP-CAM requirements
- Replies: 1
- Views: 1987
Re: ESP-CAM requirements
Hi. Some ESP-CAM devices comes without a USB-to-Serial Adapter, some other models may already include such interface. To upload firmware (program the ESP device), the normal way to do is to use the ESP32 serial interface (rx, tx), as such, the vast majority of people does use an USB-to-Serial (like ...
- Mon Feb 21, 2022 8:27 am
- Forum: Hardware
- Topic: WIFI speed, signal interference...
- Replies: 1
- Views: 3380
Re: WIFI speed, signal interference...
Just want to show another preliminary data. This time, instead of HTTP, just using TCP socket. And, instead of JPEG frame from ov2640, just random 10 kilo bytes... First M5Stack: rand-10k-tcpsocket-m5stack.jpg Below is DevKitC: rand-10k-tcpsocket-devkitc.jpg M5Stack UnitCam - Pure TCP Socket Array R...
- Sat Feb 19, 2022 5:20 am
- Forum: Hardware
- Topic: WIFI speed, signal interference...
- Replies: 1
- Views: 3380
WIFI speed, signal interference...
Full title: Question about WIFI data transfer speed variation, possible RF interference... I am testing capture frames with ESP-CAM device and transfer data using WIFI to a Rasp4. The results shown below are from 2 instances of 1000 frames in total. 2 first graphs below represent measurement taken ...
- Sat Feb 12, 2022 1:55 am
- Forum: Hardware
- Topic: ESP-CAM: crop JPEG image on (ESP) device
- Replies: 0
- Views: 1780
ESP-CAM: crop JPEG image on (ESP) device
The block below shows what I like to have with ESP-CAM device. =============================================================== Inside ESP32 Device ------------------- JPEG JPEG ------------ | | ------------ | fb>buf | => | crop | | 400 x 296 | | 400 x 225 | | | ------------ ------------ ... then, tr...
- Sun Jan 16, 2022 1:56 am
- Forum: Hardware
- Topic: ESP32-S2-DEVKITC-1R does have PSRAM?
- Replies: 2
- Views: 4427
Re: ESP32-S2-DEVKITC-1R does have PSRAM?
Hi. According to the following Mouser webpages, the Dual Core S3 DevKit WITH PSRAM are expected to 2022/JAN/26 : 2MB PSRAM https://eu.mouser.com/ProductDetail/Espressif-Systems/ESP32-S3-DevKitC-1-N8R2?qs=sGAEpiMZZMv0NwlthflBiz4nJ5gFXs406Ki6rRu2iYk%3D 8MB PSRAM https://eu.mouser.com/ProductDetail/Esp...
- Sat Jan 15, 2022 6:24 am
- Forum: Hardware
- Topic: ESP32-S2-DEVKITC-1R does have PSRAM?
- Replies: 2
- Views: 4427
Re: ESP32-S2-DEVKITC-1R does have PSRAM?
Hi, found a Mouser webpage saying that " YES, THIS KIT IS NEW AND THIS KIT HAVE 2MB PSRAM "... https://www.mouser.com/ProductDetail/Espressif-Systems/ESP32-S2-DevKitC-1R?qs=pBJMDPsKWf2z8pTLscmMOw%3D%3D unfortunately, the URL to the PDF Documentation that it shows in the page goes to the ESP32-S3-DEV...
- Thu Jan 13, 2022 7:10 am
- Forum: Hardware
- Topic: ESP32-S2-DEVKITC-1R does have PSRAM?
- Replies: 2
- Views: 4427
ESP32-S2-DEVKITC-1R does have PSRAM?
Hi, just want to ask if the DevKit: ESP32-S2-DEVKITC-1R includes PSRAM? Digikey product ID: 1965-ESP32-S2-DEVKITC-1R-ND https://www.digikey.com/en/products/detail/espressif-systems/ESP32-S2-DEVKITC-1R/15222539?s=N4IgTCBcDaIIwE4BsBWAtAUQMoAUDMYaWhAIhgGoDSAkgCoDCacASmgHIkgC6AvkA Espressif documentatio...