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0 pointsperbu1y ago0 comments

You can do that today with the closed source wifi driver. This is not something limited by the wifi performance.

Note that neither the framerate not resolution would be something to write home about. We're talking abot an aging MCU here.

0 comments

iamflimflam11y ago

It’s a dual core MCU that runs at around 240MHz.

One of the main limitation tends to be to be around pushing pixels to the screen - most displays are serial (SPI) based which tops out at 80Mhz.

The other limitation is a lack of hardware video decoding. Some of the latest ESP32 chips are RISCV based and have SIMD instructions which can improve decode performance.

But if you pick an easy to decode codec (MJPEG) is popular. The you can get decent performance with the size of displays available.

https://youtu.be/2NLblyCvJBU?si=_c-ycaS4cNZEJBaD

echoangle1y ago

I understood the parent coment as wanting to build a WIFI card, i. e. the ESP32 connects to the WIFI and transfers the data to a connected computer over PCIe or so. The ESP32 would have to do no decoding of the payload, only transfer the packets to the PC.

iamflimflam11y ago

Ah, makes more sense.

j / k navigate · click thread line to collapse

0 pointsperbu1y ago0 comments

You can do that today with the closed source wifi driver. This is not something limited by the wifi performance.

Note that neither the framerate not resolution would be something to write home about. We're talking abot an aging MCU here.

0 comments

iamflimflam11y ago

It’s a dual core MCU that runs at around 240MHz.

One of the main limitation tends to be to be around pushing pixels to the screen - most displays are serial (SPI) based which tops out at 80Mhz.

The other limitation is a lack of hardware video decoding. Some of the latest ESP32 chips are RISCV based and have SIMD instructions which can improve decode performance.

But if you pick an easy to decode codec (MJPEG) is popular. The you can get decent performance with the size of displays available.

https://youtu.be/2NLblyCvJBU?si=_c-ycaS4cNZEJBaD

echoangle1y ago

iamflimflam11y ago

Ah, makes more sense.

j / k navigate · click thread line to collapse