FT232h

[amadeok]

Hey
I saw your messages about the ft232h just today sorry so how it is going ?

[vroland]

I'm currently waiting for some parts and a prototype pcb, because the breadboard is just too unstable. Sometimes a waveform changes just by getting my hand near it ;) for the pcb I'm also using some SMD parts, which are rated for higher frequencies.

[cxw0102]

@vroland,can the new PCB support TF card?

[vroland]

***@***.***,can the new PCB support TF card? What do you mean with "TF card"?

[cxw0102]

@vroland,sorry,i mean micro SD

[vroland]

There is no card reader on the board. But you can add one with the available gpios. That is, if you are talking about epdiy. The ft232h board is a separate project.

[cxw0102]

@vroland yes,wait your ft232h board.epdiy board not enough Gpios support SD。

[vroland]

epdiy should have enough GPIOs. For v5 / v6, 4 GPIOs are available and two more input-only ones. This is enough for connecting an SD card over SPI.
I don't really see a benefit of adding a card reader to the ft232h board, since it only works on a usb-capable computer anyway, so you could attach the SD card to this computer.

[martinberlin]

@vroland this issue is stale and a bit old, is this ft232 board still going to be released?
Or maybe we can convert this into a discussion?
I think we should move to discussions all this kind of ideas or feature requests that are not really an Issue within the component.

[amadeok]

@vroland this issue is stale and a bit old, is this ft232 board still going to be released? Or maybe we can convert this into a discussion? I think we should move to discussions all this kind of ideas or feature requests that are not really an Issue within the component.

hey man i remember he made a couple prototypes but there were some issues, i would imagine since the ft232h has to be clocked very high to achieve usb hi-speed (480mbps).
the esp32-s3 supports usb 2.0, but only full-speed (like 12mbps )
both the the esp32-s3 and the older esp32 board say they supports wifi with "1T1R mode with data rate up to 150 Mbps" but i never achieve even closed to that with esp32-wrover. i wonder if there's a way to make the wifi work at 150 mbps

[martinberlin]

I see, it was in fact an interesting experiment but the ESP32 speed cannot cope with the USB speed. What a pity I would have loved to see that working...

[amadeok]

I see, it was in fact an interesting experiment but the ESP32 speed cannot cope with the USB speed. What a pity I would have loved to see that working...

there are other microcontrollers that have built-in usb hi-speed 480mbps, like the stm32f7x3
or also the arduino due or the teensy 4.1 have 480mbps usb. the teensy seems very powerful teensy for vga output
however they seem to be harder to find /more expensive than the esp32, and also probably we would need to write the firmware and probably a custom board
edit: By the way from what i understood, vroland had made a prototype where the pixel data didnt pass through the esp32 at all, it would go straight from from the pc through the ft232h to the screen, and the esp32 would only serve for some signals and synchronization, thats how he could mirror the pc screen with the high quality grayscale waveforms with not that much latency.

[martinberlin]

@amadeok if you don't mind I'm moving this issue to Discussions since it's really a different board than epdiy. I'm really willing to try this and it sounds like a very interesting project

[vroland]

@amadeok Indeed, I did two prototypes, and there was only a small atmel controller for the voltage controls. However, I never got it working quite reliably, because the logic gates I used introduced too much delay at the frequencies it needed to run at. So there was often some glitching / unreliability. Also, it was specific to the 9.7" display and would not work for 16-bit parallel displays but also not for the smaller displays because the clock was too fast. So overall, I think the ESP32-S3 is much more flexible and cheaper, and I'd rather try to mirror the screen by sending compressed diffs over the slow USB link and do the rendering on epdiy.