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Tally Pi HAT? #8
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Easiest solution (that I ended using on one tally box) was just getting a relay module like this: http://4tronix.co.uk/store/index.php?rt=product/product&product_id=154 and wiring it to the rpi GPIO. Most 5V relay boards such as that work with 3,3V control signals, just make sure you provide 3,3V on the Vcc pin to the module and 5V on the Vd, the voltage actually used to drive the relays. |
I have a few relay boards I can wire up, that's the 'easy' part. What I'm curious about is if anyone in this circle has giving thought to laying out a PCB just for this system that would have a few relays on it as well as diagnostic LEDs and a power button. To include a useful number of relays and a terminal block would make a device at least twice the size of the Pi, but could also provide space for a LiPo battery and breakouts for additional relays. I see some of this as potentially being essential to the adoption of this by both owner/operators as well as event production companies. |
While designing the hat PCB wouldn't be too major project getting the boards manufactured would certainly be. And if the end-user isn't willing to connect few wires between a relay module and pi then soldering all components to the pcb wouldn't work either. |
Right. Breadboards and jumpers are for prototypes, not for production. If I'm glad you have clients who are happy to use your homebrew systems, but I I'll design my own breadboards, and I'll have them manufactured in small If anyone in this group has any input on how to polish this interface, I'd I am very impressed by your team's development of this software, but I I'd love to hear any opinions from the other developers of this software To get back on track, I suggest a HAT which would allow room for four I must sound like an asshole if you're new to this thread, but please Yours in Solidarity, Douglas Owen Baker On Monday, September 19, 2016, depili notifications@github.com wrote:
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The qmsk-e2 tally stuff is still at a very early stage, and you are definitely the first person that I know of to consider using this outside of the event where we originally started developing this :) The background here is that we're volunteers at a biannual event, and we started writing some code to scratch our own itch with the E2 system that showed up at the venue, that was (at the time) missing the control panel (hence the original preset manager, if you look at the git history). So while our own budget and needs for a bi-annual weekend event are something adequately addressed by To answer your question, no, I don't know of anyone designing a Pi HAT approach. It sounds like it would make a nice compact solution, assuming you can figure out some kind of enclosure that supports the DB-25 connectors. Perhaps use a RJ-45 socket with a DB-25 breakout instead? I do however know that there is some work going on for a rackmount unit with an embedded rPI, but I'm not working on that myself. My own stance here is that this is a hobby project that I'm working on in my spare time, and approximately bi-annually as a full-weekend volunteer project. I am happy to fix issues in the code to maintain a high level of quality, and occasionally spend time developing new features, but I myself am not going to be selling nicely packaged tally boxes, and I am also not going to be providing end-user support for those kinds of deployments. However, you are more than welcome to use the open-source qmsk-e2 code as part of such a packaged solution for your needs or others' needs, as long as you understand the following:
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Oh, and to clarify, I think the only breadboard involved here is the one I took a picture of for the README, which was just a debugging aid for development :P AFAIK the prototype box we have ATM is just hardwired with jumpers directly between commodity modules. It's easy to fix anything that breaks, replace any modules, or any change the design post-hoc. I would gladly accept a more presentable example picture for the GPIO section :) Should perhaps move that kind of stuff to the wiki, where it's easier to edit. |
I'm interested in implementing a Pi HAT, a la https://www.raspberrypi.org/blog/introducing-raspberry-pi-hats/
Ideally this would interface with the classic 8-relay DB-25 internal to the legacy Encore and ScreenPro-II controllers, as well as providing headers for SPI LEDs and some diagnostic LEDs
Is anyone working on something like this?
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