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  1. YveltalGriffin

    Board scan PSOne PM-41(2) Board Scan

    Quick and dirty 1200DPI PSOne PM-41(2) motherboard scans. The existing scans from the PCB Strip Club had scaling issues. 7964x6292 TIFFs and PNGs are included. GOOGLE DRIVE LINK BITBUILT MIRROR LINK
  2. YveltalGriffin

    Question Maple Pad & Github (Pi Pico)

    Hey man! Glad you're getting on the MaplePad train. It's super simple to program the Pico. Go to the Releases section on the righthand side of the repo. Download the maplepad_v1.5.uf2 file corresponding to the controller type you want: standard for HKT-7700, or arcade stick for HKT-7300. Hold...
  3. YveltalGriffin

    Worklog Kawaii

    Thanks, dude! That one was hand-soldered (T15-BCM2 for AVE and T15-JS02 for passives). I hit it with some SMD291 and hot air afterwards to get everything shiny, then threw it in the ultrasonic cleaner for 10 minutes.
  4. YveltalGriffin

    Worklog Kawaii

    The ninjas can't stop this portablizer! I received the anodized aluminum prototype shells from @Ding earlier this month. In person, they actually look better than the renders. The pogo pin connector slots into the shell like so. It's held in place very securely. I also received the...
  5. YveltalGriffin

    yqwsyxl driver board

    Don't buy from Wisecoco, they charge a ridiculous amount for the 3.5" 640X480 LCD. Also, not all the driver boards configure the 3.5" panel the same way, so buying a standalone driver board is risky. You can get a full LCD + driver board combo for 28USD here...
  6. YveltalGriffin

    Worklog Wii U R&D Thread (WURD)

    The 12v regulator PGOOD can easily be bypassed (as seen here). The issue is that the two core regulators are designed for 9V - 18V input: This is very normal for wall-powered devices. Computers use the 12V ATX rail to feed their VRMs, too. Using a higher voltage like 12V means the power...
  7. YveltalGriffin

    Guide Using Retro GEM Shiny as an LCD Driver

    I have confirmed that both of the custom modelines work perfectly on PS1. The 3.5" LCD is difficult to photograph. Hopefully the sharpness comes across in this 4K recording. The motion clarity and crispness are truly unbelievable. Close-up of scanlines on the 3.5" LCD: 800x480 LCDs also...
  8. YveltalGriffin

    Thundervolt

    I have an update regarding a minor "bug" @loopj and I have noticed with Thundervolt. The risk to end users is low, but just to be extra safe, I have released new board revs and firmware to address the issue. ~ During Thundervolt testing, I noticed some strange behavior with the U10 emulation...
  9. YveltalGriffin

    Question Possible direct drive alternative?

    GCVideo DVI already outputs 480p HDMI, but you'd need to adjust the reblanker to output the 800x480 modeline the LCD requires, and probably tweak some other stuff, too. The Xilinx toolchain is pretty nasty and I wouldn't recommend going that route. Fujiflex uses 1.8v to power the FPGA 1.2v...
  10. YveltalGriffin

    Question Possible direct drive alternative?

    You bring up some good points! Hopefully I can clarify some things and answer your questions. Direct Drive does have quite a few benefits over GCVideo DVI (FujiFlex) plus an HDMI driver board. The big one is power consumption: DD draws ~350mA @ 3.3V (1.15W) A typical RTD2660 driver board...
  11. YveltalGriffin

    Worklog Kawaii

    I received the Kawaii PCBs in the mail this week. Just waiting on some components to arrive before I can begin assembly. And here are the latest photos of the laser engraved shell, courtesy of @Ding! Looks just like the renders Next steps include trimming some OMEGAs, assembling and...
  12. YveltalGriffin

    Question Questions Thread for WMU V2 (BitBuilt 2024 Summer Build Competition Entry)

    The sensor bar GND is PWM'd (pulsed on and off) to limit the current through the LEDs (this is called low-side switching). Early sensor bars have more LEDs (5 per side) and need the ~7V or so that the motherboard's circuit provides. Later sensor bars only have 3 LEDs per side and can run from...
  13. YveltalGriffin

    Ghosts αSNES

    I'm a little wary of messing with the video levels in case it impacts the colors or contrast. But I found a workaround for now. Increasing the backlight current by ~1.75x makes the brightness in scanline mode good enough. The stock boost converter is unhappy outputting this much current, but...
  14. YveltalGriffin

    Ghosts αSNES

    My 2X-SCART arrived! I like the silk labels for the input pins. The PCB has a couple mystery ICs; one seems to be an LM1881, and another is probably a THS7374. Not sure what the others are yet, but it'll become clear once I generate a schematic. The FTDI chip can definitely be yeeted once I...
  15. YveltalGriffin

    Board scan Sega Dreamcast Controller (HKT-7700) PCB Scan

    Quick and dirty scans of the HKT-7700 Sega Dreamcast controller PCB. The existing public scans were not a known DPI and therefore unsuitable for reverse engineering. GOOGLE DRIVE LINK BITBUILT MIRROR LINK Folder includes 1200DPI TIFs (6629x4157px, 80MB each) and 600DPI JPGs. Preview images...
  16. YveltalGriffin

    Worklog Wii U Mini Worklog

    This stuff is really challenging, but you make it look trivial! Awesome work. If you want to be extra safe, you can also tie Wi-Fi pin 9 to 3.3v, the way Cafeflex does. Just to ensure it's in the correct state.
  17. YveltalGriffin

    Ghosts αSNES

    Yes, parts will need to be harvested from a 2X-SCART. The TINK's firmware is proprietary and protected, and I have no interest in cracking or cloning it
  18. YveltalGriffin

    Ghosts αSNES

    This project has been stalled for a long time due to RGB video woes. As @thedrew and @Y2K can attest, dealing with 240p RGBS video in a portable is an absolute NIGHTMARE. No 640x480 LCD driver boards support it, and all the existing video scaler solutions are problematic. For context, I used...
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