1171 Results for "%E3%80%8A %EC%98%88%EC%95%BD%EB%AC%B8%EC%9D%98 OIO%E2%86%978489%E2%86%978306%E3%80%8B%EC%84%A0%EB%A6%89%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%E3%82%84%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%EC%B6%94%EC%B2%9Creceived%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%EC%82%AC%EC%9D%B4%EC%A6%88scarcely %EC%B2%AD%EB%8B%B4%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%D0%B8%C2%AA%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%EC%82%AC%EC%9D%B4%EC%A6%88glowing"

Gathering information
Log from WD2002SJ Bench Power Supply
Tonight I gathered some reference/research material for this project. Fortunately, several others have done some really great work with this module, so here's credit to them: LTC3780 DatasheetBeyond Logic blog postTemplaro blog postGreat Scott videoJulien...

First attempts at understanding how the video link works
Log from Controlling a JJRC H37 Elfie quad from a PC
I haven't done any further tests with the UDP controls, but I captured some more traffic in order to try to figure out how is the video transmitted between the quadcopter and the mobile phone. The communication seems to be established through port 8888...

Access SD Cards from the PSoC
Log from 3-Chip Z80 Design
I'm going to create a stand-alone PSoC project to use the PSoC to read SD cards. I'm going to start with the hardware defines for this project (which should leave the Z80 hardware pins unmolested) and just not download code. For the software piece, I...

ALU and Instruction Set
Log from Novasaur CP/M TTL Retrocomputer
Hardware testing is complete on all the jump and branch instructions. So that's the first 8 out of 256 instructions tested! The next 24 are loading operands. These should work fine since the jump/branch instructions are also loading operands in order...

Comm protocol between camera and drone controller
Log from Reverse Engineering a ProMark VR Toy Drone
Initially I thought the data stream from the camera board to the quadcopter controller was PPM. This signal is only active when the app is running and the on-screen controls are brought up. The quadcopter has to be power-cycled in order to be controlled...

10/8/23 Update
Log from 1802 MemberChip Card
Here are some "Quickstart" instructions for the Menu, BASIC, VTL2, and Visual/02 programs in Mike Riley's alternate program ROM. They're not a full manual yet, but will get you started and give you a "taste" of vintage programs and languages. A Quickstart...

20230221b -- File Inserting
Log from ROM Disassembly - AlphaSmart Pro
Intrigued by the various file-related pointers seen in deleteThisFile_EB9B, I remember that the keyboard scan routine had a final case where the bulk of the keystrokes (the printable ones) are handled, and there was a scan code to ASCII routine before...

New Boat, New Autopilot - using an old laptop mainboard!
Log from OpenCPN Chart Plotter /w Autopilot and Waypoints
For quite some time I have been thinking about the possibility to using a laptop to run all the heavy OpenPlotter and OpenCPN stuff instead of using a Raspberry Pi. The performance of the RPi is... well it's usable but it's not a pleasant user experience....

20230221a -- File Deleting/Erasing
Log from ROM Disassembly - AlphaSmart Pro
Previously, while rummaging for scan codes, I was correlating known behaviour with key codes. One of those keys was the Clear File key (0x56). I forgot to post about that find, but it's still worthwhile to mention the file clearing operation...

Theory
Log from All About Laptop Keyboard Reuse
A laptop keyboard is a diode-less key matrix. Its keys are distributed in a way that you can press the most important key combinations at once, despite the lack of diodes - to the point where some rows only contain one or two keys. Often, there's also...

20230225a - Displaying the Current File
Log from ROM Disassembly - AlphaSmart Pro
sub_F374 has caught my interest because it seems to be painting the LCD with the currently selected file's contents according to several state variables that I have not fully reverse-engineered.The routine begins like this:F374 sub_F374: F374 BD F6 18...

Timing & camera settings
Log from Wireless ETTL flash conversion
Got some more packets with timing values for key bits. 8e/ff 8e/b5 de/4c 8e/e5 0d/ff 8e/a9 91/25 8e/a1 2b/f8 2b/a5 00/2c 8e/b9 00/80 8e/bd 18/00 69/23 23/99 ff/fb 02/ff 8e/f9 55/ff 8e/f7 7b/ff 8e/b3 00/12 00/46 00/2f 00/f5 57/ff 49/ff 5c/ff 0f/ff 00/be...

Plasma Effect for TMS9918
Log from Game Boards for RC2014
Plascii Petsma by Cruzer/Camelot has one of the nicest looking plasma effects I've seen for the C64. Since he included the source code, I was able to port it to the Z80 and TMS9918. On top of the features in the original C64 version, I have...

More SD Card Write Details
Log from 3-Chip Z80 Design
Had to dig into the FPGA code for the SD card. Using Neal Crook's documentation of Grant Searle's version (longer pedigree on the page). The status register values are: // SD_Status bit values from Neal Crook's documentation of Grant's SD card // b7...

Building a CP/M System Disk
Log from My CP/M Single Board Computer
Building a CP/M System Disk To avoid rewriting the assembler codes for ccp, bdos and cbios so that they can co-exist in the same file. I can append the i8hex files and remove the "end of file markers". To make the hex file more readable I have changed...

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