- THEBRAIN BROWSER SUBPROCESS STOPPED WORKING HOW TO
- THEBRAIN BROWSER SUBPROCESS STOPPED WORKING SOFTWARE
- THEBRAIN BROWSER SUBPROCESS STOPPED WORKING CODE
- THEBRAIN BROWSER SUBPROCESS STOPPED WORKING PLUS
Contact me if you know a way! Or if you know of a cheapish device that will run balenaDash and output at 4k. I would like to know whether we can drive the display at 4k from the Raspberry Pi (1080p at the moment). Being able to do it from Slack is fun and convenient. We regularly ‘fling’ pages up, discuss them, laugh at them or examine them, and then drop back to our dashboard. We’ve been using Tohora for a few days and I’m proud of it. Tohora displays URLs on balenaDash in an instant. If included but unused, the impact of the extra webserver process is invisible and minimal. I’ve submitted a pull request to balena to see if they feel like including it right into balenaDash. Getting pages on screen is easy: use browser or Slack.
THEBRAIN BROWSER SUBPROCESS STOPPED WORKING HOW TO
In this video I demo how to put a couple of pages up using my browser (the “Hello World” page is our base, it’s what WPE_URL is pointing at): That includes Slack, and curl, and web browsers. Tohora puts balenaDash under the instant control of anything that can talk http. (I renamed it with a whale-y name after “screenserve” seemed like it might be taken). I definitely eliminated some noobie mistakes on the way, and it’s probably still got plenty, but… Introducing Tohora Honestly, I’d never written more than “Hello World” in Go before, but it delivered a great developer experience and I got there.
THEBRAIN BROWSER SUBPROCESS STOPPED WORKING CODE
The plan was: code and try stuff out on my Mac, then simply compile for ARM and a single binary would deliver everything. Tricky thing was though, the container is based on a stripped-back OS with no easy way for a web dev like me to get out good old python or nodejs. Then I can use balena’s public URL feature to control what’s on screen through a web browser. OK, I thought - I just need to run a webserver to start and stop a subprocess. W00t!īalena makes it easy to try things out, inside your container, from anywhereĪfter a Ctrl+C, the process exited and the screen returned to showing what it had been before. I discovered that if I ran WPELauncher then my website appeared on screen pretty much instantly. Opening a terminal inside the wpe container was easy - another mind-blowing feature of the balena platform. In the end, I went my own way: but the responsiveness was great.
THEBRAIN BROWSER SUBPROCESS STOPPED WORKING PLUS
Another plus for balena: I had a reply from the team very quickly. It felt really do-able, though, so I posted on the forum. I’m not the first to try something more on the platform: see dashboards (“performance will be limited on Raspberry Pi devices”) and commercial offerings exist - screenly. Also, the process never attempts to reload the URL, so only pages that “update themselves” stay updated. That’s really too long, especially since the web browser is fairly quick to render pages. The docker container on the device is restarted as a result, and that takes at least a couple of minutes (on our RasPi 3B+, anyway).
Since balena is all about IoT, you can do this from anywhere (there’s a easy-to-use API and a cli for it too). The way balena works is like this: if you want to change the URL, you change a device variable called WPE_URL.
Only I wanted more control, or rather, snappier control.
The claim was true: within 30 minutes, we had a cheap device that booted up and rendered a web page on the HDMI-connected monitor. I discovered balenaDash while burning an SD card to go into the RasPi. It’s an excellent system for running code on fleets of connected devices, a delight to work with. Not entirely coincidentally, quite a while back I spent a few days working alongside Alexandros, founder of balena. I’ve worked with balenaCloud before, back in the days when it was resin.io.
THEBRAIN BROWSER SUBPROCESS STOPPED WORKING SOFTWARE
Anyway, this post is about software - about what we’ve got running on the Pi. Not literally behind it - although a Raspberry Pi is pretty small, it’s proved rather difficult to wedge behind the monitor. What do you know, though: the office I now sit in, at the super-nice Bradfield Centre, has a display on the wall, so I felt sort of obligated to get something running behind it. Last year I changed jobs and stopped working with digital signage. Tohora - instant web page control for balenaDashĪ post introducing a recent hobby project of mine.
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