# openmv4 H7 PLUS Measure the distance with ov5640，change framesize=sensor.FHD，memory errors！

OpenMV Boards
21

I don’t know of any project that used the OpenMV Cam H7/H7 Plus with RS485.

We will have RS485 support for the OpenMV Cam RT with the RS485 shield.

As for wakeup on an interrupt… yeah, you just would have a COM uart. So, there’s no real wakeup on that. You’d just listen for bytes. That said, it’s totally possible to change around our firmware to wakeup on like a line break. By default we will not have a wakeup on UART though.

22

you are right，i have a 485module connect with openmv4 by uart. i want to wake up openmv4 by uart.
i think the openmv4 could be wake up by io interrupt comes from uart byte.----- can it work?

23

Yes, the processor has the ability to do this. I am just saying that we will not likely have support for this out of the box so some firmware hacking will be needed.

24
  1. image
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  2. Installation hole size shoule be marked as mm ，not inch。hope diameter size is at least 3mm
  3. Installation hole is too close for camera screw to easily install。
  4. Light source expansion board should have double led than before，and its power should be suppled by usb power supply +5v or vin rail light power ,that battery is not a good idea.
  5. when i set light.pulse_width_percent(100) the led is turned off,light.pulse_width_percent(10) turn the led on. :sweat:
  6. M55 could be pluggable module for openmv5 which cpu module could be changed at will.
  7. i hope openmv5 have a waterproof transparent shell. inside the shell,the Light source expansion board is front,the rs485 is back, camera is middle.
  8. that is my idea of today.
25
  1. We will have 3D for everything that we build in the future. You can pull measurements from that.
  2. The hole is larger than 3mm.
  3. It’s been fine forever, we are not changing it.
  4. Yes, I beefed up the rails to pull up to 1.5 Amp from USB or VIN. Needing a battery is not required.
  5. SignTown designed the light shield using the DAC which can’t really drive that output well. Just use a regular GPIO as on/off. The new LED shield for the OpenMV Cam RT is much improved.
  6. No
  7. Yes, we will have a case design which will have some ingress protection. It will be designed to allow you to have shields on it.
26

when the openmv5 will come？and when M55？

27

August/September.

M55 is later on - next year. Chips that have it are super new and don’t have any software support.