Raspberry Pi Forums

Gavinmc42

The basic difference is that the keyboard is only notifying which single key is pressed. Keyboards have always reported key pressed and key released. Multi key rollover is common especially in gamer keyboards. Chess starts with pieces on known positions and only one is moved at a time. Electronic C...

Gavinmc42

VEC routes those signals to DACs and appropriate encoding. How many DACs? If there are three could it do VGA output? VEC seems overkill just for composite analog video. I only see PAL and NTSE. VDAC? We assume DPI and VEC can't be used at the same time ? void rp1vec_vidout_setup(struct rp1_vec *vec)...

Gavinmc42

How will the pi know the type of chess piece that has been lifted to work out the possible moves ? Detect lifting and putting down the piece, they all start from known places. Just have to scan for open and close switch fast enough. Wonder if one of those Mech Keyboard QMK running on a Pico could b...

Gavinmc42

8 x 8 switch matrix uses 16 GPIO pins, one more pin for 64 Serial RGB LEDs.
Look around for RGB LED spacing that match your chess board squares.
Might have to cut a LED strip into 8 strips.

Gavinmc42

Maybe just buy a new Pi 5? LOL Buy a few, have one spare for when it wears out and gets slow. Possible it is the uSD/SSD or JMicron USB to SSD chip. OS's can fill up with junk and flash memory wears out. Bookworm on Pi4 does feel faster than Bullseye. I have only had one of the first batch Pi3B run...

Gavinmc42

OP comparing Pi5 to NUC with two SSDs, idle 3.5W. So which size, brand two SSDs must be used on the Pi5? USB3 to Sata adapters as well. Is the NUC plugged into HDMI? Wasn't there some more RPi power management commits from 6.1 to 6.5 kernel? If Pi5 releases with 6.1 kernel without 6.5+ PM commits th...

Gavinmc42

ah, talking with the libcamera guys, it seems we are both right! In both, interesting. Stats, would that be the white balance stuff? That would explain Jeff's comment about the RP1 detecting changes. Possibility of movement detection via light changes in regions of interest. Bayer demosaic not need...

Gavinmc42

Doing compiles using all cores can chew the power 4 x CPU 100%. On the other hand just monitoring a few sensors <1% With the new power management chip I expect the Pi5 could be tweaked for low power. Benchmarks generally test for performance, ie CPU 100%. Shutting down parts of the Pi5 should be mor...

Gavinmc42

Once my Pi400 keyboard finally dies the PCB might get transplanted into a custom Mech case. The connectors all on one edge make that easy. But now the Pi5 has shown the features of the new chips I want those in my daily Desktop. However the footprint of the traditional Pi PCB layout is not conducive...

Gavinmc42

The general idea is certainly sound, but there's room to die shrink and improvements to the RP1 A big reason for RP1 was ESD protection from kids fingers on the GPIO pins, a die shrink reduces that protection. But an improved version with your suggested mods, USB 3.2 etc would improve any Pi5+/6 ca...

Gavinmc42

Use both 5V pins and as many Gnd pins as you can.
Those headers are not really rated for 5Amps per pin.

Gavinmc42

The key is securely stored. Hopefully not on an Intel PC ;) Hmm, hardware crypto in the Pi5, how to use that to secure things? Had not bothered to check on the Pi4. Possible to encrypt the Pi5 app and un-encrypt on run time? Pi5 would be good machine to learn, practice crypto on ;) Lots of other SB...

Gavinmc42

Given one can't get a free PDF copy of MagPi 134 or HackSpace 71 until 19th of October I am guessing that's when Bookworm will be released. Yep, but is that 19th Oct Oz time or 20th :lol: Seems there could be some VNC issues, RealVNC might be ok. New PiCore 14 with 6.x kernel is now out, I prefer t...

Gavinmc42

Ok. So how can it be done? And how can it be undone? If they can rewrite the boot EEPROM to add malicious code that no one notices then they are probably working for one of those agencies. If it is a malicious employee then they probably work for one of those agencies. FYI, all uSD have an Arm, 805...

Gavinmc42

/proc/device-tree/model

"Raspberry Pi 400 Rev 1.0" for me
Who has a Pi5 to try this?

Incidentally, congrats to Pi team only one rev for Pi400

Gavinmc42

I believe the aim (don't hold me to this) is to get Wayfire working on all if possible. Something to do with GPU compositing for newer Pi (4+) and having to use software on older.(3-) New Bookworm is reported to use Wayland/Wayfire on Pi4/5 and X11/Mutter on older Pi's. I did try Rpi Debian 12 lite...

Gavinmc42

Now, I am proud to say that my program has been developed using Qt5 Creator, and I also have access to its source codes.

Very important keeping track of project source code.

Gavinmc42

I think the hats are still in prototype stage.
They will probably be designed to fit in the Pi5 case, maybe.
m.2 hat might not happen till next year.

Active fan, POE hat and m.2 hat might need different case?
Going to have to wait to find out.

Gavinmc42

Let's start from the position that your threat model is preposterous. It is like saying a government requested a backdoor into mainstream CPUs by having them run Minix internally on the CPU. There is paranoia then there is tinfoil hat paranoia, the only difference is where the tin foil is made. How...

Gavinmc42

PDM and we eventually want the option of integrating digital mics on cameras So do the camera connectors have the PDM wiring. Multiplexed on the i2c? Ah, the reason for new cables, 22 pins on the connectors. Same as CM4/IO 22pin 4 Lane connector, pin 18 is NC, now PDM mic? That would be really cool...

Gavinmc42

Does the new Pi 5 require Wayland? Don't think it is "requires", my impression is Wayland/Wayfire is just twice as fast as old X11. it just comes with wayland as most people think that animated windows and stuff 'are essential' Nah, just an old dream becoming real ;) Like Vulkan is faster...

Gavinmc42

Whatever, the one-for-all board we now have is creaking at the seams, high redundancy and not consumer repairable. The South Bridge RP1 method means there is a way forwards, quicker and cheaper, not creaking at all. Cost of repair verses cost of SBC? Been using Pi's for a decade, never seen a need ...

Gavinmc42

Wondering if dual cameras will just be so much easier on the Pi5?

Gavinmc42

The proper way to ask for CMx is via Industry ch
https://www.raspberrypi.com/for-industry/

Gavinmc42

No, there is no support for RGB-IR colour filter patterns in the ISP :( There might be a quick way to just drop the RGB pixel data and just use the IR. How flexible is the ISP? For RGBI it would be raw data only on the IR pixel, no Bayer processing needed. I looked in the RP1 CFE source code and di...

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