https://i.postimg.cc/YvxF2SfW/DSC-1156.jpg After many hours of gradual refinements, I've completed a TinyLlama 2 (with wavetable selector) embedded version of a 3d printed mini IBM PS/2 25 that I had designed last year. Here are the STL files and list of materials - Printables - and here are some …

To anyone else who wanted to have the MT-32 Pi but had trouble locating a Raspberry Pi Zero 2 W at a reasonable price, and ALSO happened to have an extra Pi hanging around, here's one way to use it with the Tiny Llama 2. Since Tiny Llama is aligned to mount the Pi from the bottom up, and most other …

Thanks to @Eivind for creating such an AMAZING piece of hardware and for his great support. True that! Now, I am trying a LOOOOT of DOS games on this beast, and I have found some games that refuse to play correctly, no matter what settings I try (EMMS/NO EMMS, XMS/NO XMS, all possible combinations …

Got the SD Card Activity LED working! Here's what it looks like hooked up to the TinyLlama using the SD card snooper: https://i.postimg.cc/ykhFnPxr/DSC-1135.jpg Here are few observations. I tested on signal using both CMD and CS pins. The CMD is pretty blinky, while CS seems to stay active longer. I …

Just tried this out with the Tiny Llama 2 - unfortunately it's not able to start. I've tried it with both EMS swapping on and off. Here's the error code that QEMM reports: Exception #6 at 0267:B9EA, error code: 0000 AX=00A7 BX=5B5C CX=65E8 DX=CF58 SI=8902 DI=00A6 BP=2444 DS=0832 ES=1278 SS=1278 SP= …

I would suggest you bringing 3.3V to the circuit directly from the TinyLlama. If that's not an option, use a simple and cheap LDO to step down the 5V to 3.3V instead. OK! I'm going to keep it down to one I looked over the circuit for the LDO and decided that yes, the little plug-in modules look …

Anyways, here's the relevant schematics for the activity LED setup on my ITX-Llama board: Screenshot 2023-06-09 at 10.02.43.png Here's a sketch of your circuit adapted for stand alone use with the TinyLlama. The only changes are the connections and adding a voltage divider to get 3.3V for the …

I still don't quite understand the voltage readings you're getting. The signals should be around 3.3V high and 0V low. Btw, I'm not sure you said what your use case for all of this is? Did you build a TinyLlama or order one from me, and are you trying to hook up a SD card activity LED? Or is this …

I got one of these guys to experiment with. Hooked up the circuit that Aaron had linked to and it worked right away. Used a 2N3906 PNP transistor. Either pin 2 or 3 works, I can't tell a difference for disk activity. Pin 2 drops from ~2.48v at high to 1.5v at low, while pin 3 drops to ~2.2v at low. …

Thank you for the idea. I think I will try the diagram here: https://hackaday.io/project/12782-orange-pi-pc-computer/log/42606-sd-activity-led-and-status-led Looks like a PNP transistor on pin-2 of the SD card slot might do it. When the 5v signal goes low on the base it will trigger the LED. I will …