![]() Our render-function renders the assigns by showing an SVG dot on the screen and printing out some recent events. We add the event information to the events list and for particular events we let a function called process_movements/2 update the dot. We add the handle_info/3 callback matching for the input events we expect to be working with. We set up some initial state with the list of devices, an empty list of events and. start_link( KeyboredUI.Inputter, nil, name: Keybored.Inputter)Īs we mount the LiveView we pull the list of devices and subscribe to the “inputs” topic. The fundamental steps are taken from the Nerves documentation for User Interfaces which has a whole thing about setting up a “poncho” project with Phoenix.įirst, make sure you have installed Nerves and have Elixir working.ĭefmodule KeyboredUI.Inputter do use GenServer def start_link(_) do GenServer. You will need a Raspberry Pi device, an SD card reader and some patience with me. Let’s stick to the slightly simpler demo and unpack the process. The docs for that one are sparse, steps are likely missing. That one includes Tailwind CSS, basic Ecto migrations with SQLite and some other niceties but it is another demo. I have also made a slightly more involved demo project for an event that you can find on my GitHub. This is just one way to do something fun with Nerves and LiveView in a fairly minimal way. There are may compelling first demos we could arguably make to achieve it. There is also a video covering this exact project that I made. I haven’t run into any short compelling demos of getting these started together. Phoenix LiveView is currently my favorite way of making full-stack web development cohesive and keeping the complexity as low as possible for it. Nerves is a fantastic way of working with hardware along with the BEAM virtual machine and it is great fun for hobbyist projects like Raspberry Pis. If you plug the camera in to a TV via HDMI, then for most cameras, whatever would normally show up on the LCD should be displayed on the TV and the controls on the camera will function as normal.I’ve played with Nerves for almost as long as I’ve been learning and using Elixir. Attempting to do this may even damage either the camera or your laptop. You can run information out of the laptop to a TV, but you can't run HDMI from your camera in to the laptop. Your laptop almost certainly has an HDMI output, it can't be used in both directions. You also mention the HDMI connector on your laptop. If you are trying to use an MHL adapter with the USB port, it is not going to work and may cause harm to the camera. Generally, if your camera has an HDMI output, then it will display the photos on the TV that it is plugged in to, but I'm not sure what you mean by USB HDMI cable? USB and HDMI are not the same, there is a technology called MHL that allows HDMI to be output over the same physical port as USB if it has special hardware, however the D600 doesn't have this, it just has a compact HDMI port. ![]() Even though many tethering applications allow you to control your camera from the computer, most also allow you to retain control using the camera itself. If you want to shoot with your camera connected to a laptop to view your work as you shoot, you need to use a tethering capable application on your computer and connect the D600 to the computer via a mini-USB to USB cable. Use a mini-HDMI to HDMI cable to connect the mini-HDMI port on your camera to the HDMI port on a television or monitor. ![]() If you are trying to connect your D600 to an HDMI monitor or TV via the camera's USB port using a cable designed for an MHL compliant USB port (such as many mobile phones use to output video to a screen) it will not work since the USB port on your D600 is not MHL compliant. In general the only devices that can accept an HDMI signal and display it are televisions and monitors. ![]() This prevents someone from being able to connect a DVD or BlueRay player to their computer and copy protected content. Due to Intellectual Property constraints, most notebook or laptop computers as well as desktop models do not have an HDMI port that allows video signals to be brought in via the HDMI port. ![]()
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