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smiller29
USA
Asked
Resolved by DJ Sures!
OK guys I have another question for everyone can you use the UART on the EZB V4 to connect to a USB rather than the camera port?
I want to hardwire my EZB's to my onboard PC but I also want to use my ez-robot camera with one of my EZB V4.
Related Hardware EZ-B v4
when you tried the rx and tx together for the terminal test, did you set it to 3333333 baud?
I hadn't done that, I believe I tried 3,000,000 and it worked. Anyway, I just tried the PL2303TA at 3,333,333 baud now and it worked with RX/TX jumpered.
Try the esp32 cam firmware and modify the code for a lower baudrate
Sorry, Jer just had the time to respond. You might be right, the two heads in the science museum in Kuwait are on much older ARC software. I can't remember if the heads at home are using this setup, I won't be able to check for another 2 months.
Hopefully, you have better luck with a newer laptop like I did, or get yourself the PL2303HXD or a completely different brand. Although I did have trouble finding one that was that high of baud. (maybe more avail now i think that was back in 2017/2018?)
Good luck!
Jeremie, and the rest of you folks that are working on this question I posted please understand that I would love to know if this could be done, I really don't need this solution anymore because, I followed DJ advice and purchased another USB camera for my current Inmoov build. I will find another use for my EZ-Camera in some other build.
I just don't want you to pull your hair out on this on my account...
Well, @smiller29 even though it isn't of immediate benefit I wanted to see this problem through to its end!
After investing in 3 different USB-to-TLL adapters and doing quite the hack to the third one, which was supposed to be a USB-to-RS-232 adapter, today I was finally successful!
The only PL2303HXD chip I could find available was on an RS-232 adapter so I had to make it work. I removed the RS-232 chip and ohmed out the pads where the PL23203HXD RX, TX, and GND pins went to and soldered on some jumpers. I connected everything like Will did, except that I didn't even need to attach the camera RTS to GND, and it worked right away. All I had to do is to connect to COM3 in the camera skill and the picture appeared. It even looked great! No artifacts. Nice and crispy!
So word to the wise the FT232RL, PL2303HXA, and PL2303TA UART-to-TTL adapters aren't able to communicate at the 3.33 Mbaud needed by the EZ-camera but it seems that the only UART-to-TTL chip that can is the PL2303HXD (and possibly the PL2303GC - untested).
Thanks to everyone who contributed, and Will who originally posted the tutorial!