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Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

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Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#51

Post by t0mas88 »

hmottestad wrote: post #39
godot wrote: post #35

A bit off-topic but related to the intro in this readme.. > Why? > I'm super bored in lockdown. Add a Raspberry Pi 400 and a few tiny displays... I feel like there are two distinct kinds of lockdown experience. One, you have kids, and you have absolutely no free time because now your kids are home and you're working from home. Two, you don't have kids, and you're super bored every day. Seems like not much in between.

Kindergarten? School? At least in Norway the government has focused on locking down old -> young. So bars and restaurants and gyms are pretty much shut down, put kindergarten and primary schools are still open with some restrictions. Mind you though. Most of the people I know with small kids didn’t have much time to spend on side projects before the lockdown either. Only difference now is that they save an hour of tr…

Netherlands used to take a similar approach as Norway, but since earlier this month the schools and kindergarten are closed. Not because many children get infected, but because parents are much more likely to stay at home when the school is closed. So they're using kids as a way to keep people at home. Kind of crazy...

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#52

Post by fest »

hmottestad wrote: post #39
godot wrote: post #35

A bit off-topic but related to the intro in this readme.. > Why? > I'm super bored in lockdown. Add a Raspberry Pi 400 and a few tiny displays... I feel like there are two distinct kinds of lockdown experience. One, you have kids, and you have absolutely no free time because now your kids are home and you're working from home. Two, you don't have kids, and you're super bored every day. Seems like not much in between.

Kindergarten? School? At least in Norway the government has focused on locking down old -> young. So bars and restaurants and gyms are pretty much shut down, put kindergarten and primary schools are still open with some restrictions. Mind you though. Most of the people I know with small kids didn’t have much time to spend on side projects before the lockdown either. Only difference now is that they save an hour of tr…

For someone living in a suburb but having work and daycare in city a work-from-home might actually make commute worse (or it would for me, if I had to work from home).

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#53

Post by lazyjones »

Semi-OT: I wish someone would make flexible building blocks for fastening/connecting such parts, i.e. something like Lego or Fischertechnik but better suited for electronics. Many people use 3D printers, but they seem wasteful for printing temporary cases for such projects. Wood is a possibility, but not so quick to work on. There has to be something better than duck tape and rubber bands...

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#54

Post by tjungblut »

TedDoesntTalk wrote: post #3
ISL wrote: post #2

There's a lotta cool/interesting applications for a tiny display like that. Thanks for sharing. :).

Other than watch-like functions, can you give me some ideas?

it actually reminds me of the Logitech G15 that I had over a decade ago (or G19 as the later model). The screen can be used to show some stats like CPU and RAM usage, or for games some kind of extra information like your health, your ammo count etc.

https://en.wikipedia.org/wiki/Logitech_G19

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#55

Post by hobofan »

Mauricebranagh wrote: post #50
hmottestad wrote: post #39

Earlier quoted context omitted.

Kindergarten? School? At least in Norway the government has focused on locking down old -> young. So bars and restaurants and gyms are pretty much shut down, put kindergarten and primary schools are still open with some restrictions. Mind you though. Most of the people I know with small kids didn’t have much time to spend on side projects before the lockdown either. Only difference now is that they save an hour of tr…

Now it turns out that kids at school are spreaders (especially of the new variant) - one of my friends who is a teacher has it.

N=1, but childcare has been the biggest avenue of infections I've seen here in Germany. Basically every childcare of colleagues with children has been shut down at one point in October/November (when the numbers started rising here) due to infections among the children. In most cases one or multiple of the families have been completely infected as a result of that, and I guess the only reason it hasn't spread around the workplace is due to good precautions.

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#56

Post by TeMPOraL »

hobofan wrote: post #55
Mauricebranagh wrote: post #50

Earlier quoted context omitted.

Now it turns out that kids at school are spreaders (especially of the new variant) - one of my friends who is a teacher has it.

N=1, but childcare has been the biggest avenue of infections I've seen here in Germany. Basically every childcare of colleagues with children has been shut down at one point in October/November (when the numbers started rising here) due to infections among the children. In most cases one or multiple of the families have been completely infected as a result of that, and I guess the only reason it hasn't spread around…

It's the reason we aren't sending our kid to daycare, despite the private facilities here in Poland staying open for a large part of this pandemic.

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#57

Post by spinningarrow »

godot wrote: post #35

A bit off-topic but related to the intro in this readme.. > Why? > I'm super bored in lockdown. Add a Raspberry Pi 400 and a few tiny displays... I feel like there are two distinct kinds of lockdown experience. One, you have kids, and you have absolutely no free time because now your kids are home and you're working from home. Two, you don't have kids, and you're super bored every day. Seems like not much in between.

It’s strange but I don’t really feel bored at all (I don’t have kids). In fact work-wise not a lot has changed except for having no commute, and since my commute was pretty short, the increase in time is quite marginal.

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#58

Post by roel_v »

ISL wrote: post #2

There's a lotta cool/interesting applications for a tiny display like that. Thanks for sharing. :).

I ordered a few by accident from AliExpress and they showed up yesterday. I don't know for the life of me what to do with them. I was thinking maybe as a temperature/humidity monitor thing, but it would have to be mains powered because I don't think there's a way to make a device like this diy'able (with arduino and dht22 level components) and make it run off a battery for more than a few months. So any suggestions are good.

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#59

Post by colordrops »

gofreddygo wrote: post #47
godot wrote: post #35

A bit off-topic but related to the intro in this readme.. > Why? > I'm super bored in lockdown. Add a Raspberry Pi 400 and a few tiny displays... I feel like there are two distinct kinds of lockdown experience. One, you have kids, and you have absolutely no free time because now your kids are home and you're working from home. Two, you don't have kids, and you're super bored every day. Seems like not much in between.

Super agree. Its either "I'm bored out of my wits" or "i'm exhausted with my kids" Folks with more time and energy on their hands have managed spend it all on a broad variety of rabbit holes. Folks with kids have managed to wither whatever minutes were left away, looking at the other group's reports on their rabbit hole expeditions Both, together have managed to give google enough confidence to double their ads and d…

> Both, together have managed to give google enough confidence to double their ads and disable the "skip ad" buttons on youtube.

I'm finding that I'm not using youtube that much anymore. It wasn't really a conscious decision - the annoyance pushed away my reptilian brain.

Re: Show HN: Raspberry Pi 400 with a $2 IPS 240x240 micro display

#60

Post by exged »

fermienrico wrote: post #12

There is a weird spot in the display market that is painful as a embedded developer: Displays under 400x240 pixels, usually the gfx buffer can be managed in the ram of the MCU. Nothing fancy needed, can get decent framerate on SPI bus running at 16 MHz. Anything above this range gets super ugly: no good displays exist and if they do, they're expensive or outdated (800x480 resolution is basically impossible to obtain)…

Aside from very simple use cases, you'd probably struggle to render 800x480 or 1024x768 frames on an MCU. At 1024x768 especially, the pixel rate (47 MP/s at 60Hz) and framebuffer size (2.3MB at 24bpp) are just too big even for large MCUs.

APs are the right tool for the job. It's true that for hobbyists, documentation is lacking and DSI is complex to get started with. The best solution would probably extend DSI with something like EDID. DSI displays can then be plug-and-play (like HDMI / DP) using an universal driver.

Another option is eDP, but it's not so common on cheap APs or screens.

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