I have a pi3 and I want to connect it to my monitor that came from my old computer. The problem is that it is a monitor and a webcam combined, and the cable is too wide for the connectors. I was wondering if I could use the gpio pins, and if so, which ones and how to connect it all.
You can connect them using HDMI-DVI or HDMI-VGA converter.
I am assuming monitor cable to be DVI or VGA. If you can mention details of the cable, you can get precise answer.
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I want to connect an STM32F407 Discovery board with a Raspberry Pi 4 Model B.
And I want to use UART as communication so I plan to use PD5&6 on STM32 and Pin8&10 on RPi. But after looking up online it says that the voltage of a STM32 port is 5V and RPi is 3.3V, so it seems that I need a level converter between them?
And there are also some articles says that not all the STM32 port are 5V, some are 3.3V. But I cannot find any of that information in the datasheet. Can anyone tell me where can I find these information?
Thank you very much ~ ~
The STM32 uses 3.3V as well. But it's 5V tolerant.
Just go ahead and connect them. There is no voltage difference.
You should have a look at the reference manual for that discovery board. It is here: STM32F407 Reference Manual.
There should be no issue connecting UARTs between those boards. Just remember to connect the TX from one to the RX of the other and vice versa. You can also use the CTS/RTS for flow control, but that isn't necessary as long as you are using baud rates of 115200 or slower.
Something else that I would recommended is to power the Raspberry Pi from the Discovery board. There should be pins for suitable power on the discovery. This is important because it gets both boards using the same power and ground so that the UART logic levels are consistent between the two. This may not be necessary, but I have had issues trying to connect two Nucleo boards SPI busses together if I didn't power one board from the other.
I am using Raspberry Pi Zero W for my project. I want to use GPIO Pins as USB instead of the on-bard MicroUSB connector. Is it possible?
Thanks in advance.
Sorry, the GPIO connector does not include any USB signals.
There are some USB hubs that connect to the test pads on the back side of the zero, e.g this one sold by Adafruit: https://www.adafruit.com/product/3298
If you are happy with just one USB port but don't like the micro connector, you could probably solder your own connector with a short pigtail lead to the same test points.
You can't use the micro usb connector at the same time as a hub or usb connector attached to the test pads as they are the same signals as in the micro connector.
The test pads p22 and p23 can be seen in this schematic:
https://github.com/raspberrypi/documentation/blob/master/hardware/raspberrypi/schematics/Raspberry-Pi-Zero-V1.3-Schematics.pdf
I'm currently working with Kinect v2. I can do all sort of stuff on PC with it. What I want to do next is, to get the data I want on PC and control the Raspberry Pi with that data (for example, I will move the Pi with motors when I tilt my head to right). I have sorted out the motors and everything but I just don't know how to use that tracking data I have on PC to control the Pi.
I hope the question makes sense, i'm just extremely new to both Pi and Kinect.
Thanks for the help!
The first step is to choose the bus that will connect the
PC to the Raspberry PI.
Your options are:
Serial bus: Pi Serial tutorial,USB Serial to Pi cable
Network Socket (cable/wifi): Socket client/server c++ examples
i2c: i2c windows PC, Configuring i2c on Pi
I believe that the i2c or serial bus will be the easiest to start
with. But in the end all 3 options need to set up the connection, and send and receive bytes / byteArrays.
we are doing a project for receiving data from a device using a RS232 to ethernet converter (gridconnect net 232+) onto to a Atmel board. When we connect the converter to the PC, we are getting the output but not when connected to the microcontroller board. We need to know if there has to be some network confirguration to be done on the converter in order to receive it on the microcontroller.
Thanks !
I haven't worked with that board or device, but with any RS-232 communication channel you should check that all RS-232 parameters are set up correctly on both sides. Databits, stopbits, parity settings, etc. Even one setting being off will completely stop RS-232 communications.
Once that is done, I'd hook up a terminal emulator of your choice to simulate the microcontroller side and make sure that you're getting the right traffic from the Ethernet side. You might get lucky at that point and everything might start working. ;)
I've got a plugboard which can be connected to a Raspberry Pi (via GPIO).
Now I would like to connect it with my laptop which haven't any GPIO port or something like that. So is it possible to connect it by USB or does it make no sense?
(I've searched for this, but I got only questions about 'software'.)
I would be glad to get an answer.
A quick google search for USB GPIO returned a number of results.
These should work in a very similar manner to the ones on your Raspberry Pi, albeit with markedly less community support.