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Sbitx hat
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Jim, On Wed, Nov 13, 2024, 4:07 AM Jim via <winickyj=[email protected]> wrote:
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开云体育I was thinking wouldn’t it be cool if it was as small as this:But the case would need to be a little taller to have enough space; and I’m assuming there is an eDP touchscreen around that size. ?I think it’s probably better to use eDP than HDMI or any of the header pins: the flex-cable can get around the pi hat, and hats are usually not stackable (unlike PC/104). ?HDMI cables are too clumsy for integrating the pi and its display into an enclosure, but it’s good to have the option to use it for a secondary display, like I often do with my sbitx. But are we still talking about a hat with just the codec and oscillators as in the YouTube video, so that another (bigger, home-brew) board would be needed for the rest of the analog circuitry anyway? ?Or are you trying to get the whole radio onto the hat now? ?Or something in between?
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Hi Juan, I have a hat board that Farhan passed out at FDIM. Is this the one you are looking for? If yes, you can have it for free. I believe you are located in Puerto Rico. Please forward me your shipping address and I’ll see what shipping costs are involved.
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Please contact me at hill(dot)allen34@yahoo(dot)com.
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Thanks! |
开云体育That case would need to expand a lot in my opinion to accommodate an HF radio, and the goal of putting the entire circuitry on a Pi-Hat seems very aggressive.That display in that case is connected to the RPi thru the GPIO pins as I recall. Full-size RPi boards have several ways of connecting displays, and if you want a touchscreen that's an added connection that can be carried thru GPIO pins. If you *could* fit the HF radio into a Pi-Hat, you could build your boards as a pass-thru GPIO, stacking the display on top of the HF board which stacks on top of the RPI as shown in this photo: ? It's based on something referred to as the Hat+ standard, and is most commonly seen with certain PoE boards that can be sandwiched between an RPi and a typical RPi hat. Once you do that, then you have to figure out power and any display you choose at that size will be lower resolution, limiting you to a very basic interface in my opinion... If cost were not concern, I suspect something like you describe might be possible, but RF output would likely be very low, the board would rely on expensive surface mount parts to avoid having hand-wound toroids and other large analog components/heatsinks. In short, you'd have to make every design decision based on size and thermal concerns, since your trying to package a fairly complex circuit into a very small package - this case that you linked to is about the size of a pack of cigarettes, to accommodate a 'cost is no issue' design would likely have to either double or triple the volume (size of two or three cigarette packs). I thought the the zBitx project goal was to simplify the design, reduce the cost - I'd think a better solution would be to outboard the control surface (a phone or tablet running a browser over WiFi, for example) rather than a tiny screen. And finally, Nextion screens, as a component, are relatively expensive and rather complex, in that they have to be programmed ?with a screen "layout" (I think it's called) which isn't really hard, just added steps and increased costs compared to similar-sized non-Nextion displays. Ken, N2VIP On Nov 13, 2024, at 15:41, Shawn Rutledge K7IHZ <social@...> wrote:
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On Nov 30, 2024, at 1:51?PM, WP3DN via groups.io <3voltios@...> wrote:
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