9869 Results for "%E3%80%8A%20%EC%98%88%EC%95%BD%EB%AC%B8%EC%9D%98%20OIO%E2%86%978489%E2%86%978306%E3%80%8B%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%E2%94%A6%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80world%EC%84%A0%EB%A6%89%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%88%EC%B2%AD%EB%8B%B4%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80promotion%20%EC%84%A0%EB%A6%89%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80%E2%94%AB%20%E2%88%AB%EC%84%A0%EB%A6%89%EA%B0%80%EB%9D%BC%EC%98%A4%EC%BC%80decided"

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...

September 28th 2023: I can't make the linear actuator move precisely
Log from Automatic Moving Cricket Wicket
It was dumb to use a DC motor for this project. I should have just ponied up the resources for a high speed stepper. My plan was to attach a rotary encoder to the DC motor to accurately measure the number of rotations. This is not easy....First, I tried...

Iteration A4
Log from 6-Axis Micro Manipulator
So after a few iterations of re-design to work with NEMA-8 sized stepper motors which whilst not the smallest available are the smallest in the sub $20 bracket. In this case $12ea. With the increased size comes the headach of deciding on an arrangment...

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...

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...

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...

We’ll be on Maker Faire Kyiv this weekend!
Log from uECG - small open source wireless ECG sensor
Quite symbolically, this Saturday, on March 2, Kyiv will host the first Maker Faire Kyiv in a long time! The last one was in 2018.Where, in addition to uECG and uMyo, we’ll present our first project in collaboration with TURFPTAx The device working...

We’ll be on Maker Faire Kyiv this weekend!
Log from uMyo - wearable EMG sensor with wet/dry electrodes
Quite symbolically, this Saturday, on March 2, Kyiv will host the first Maker Faire Kyiv in a long time! The last one was in 2018. Where, in addition to uECG and uMyo, we’ll present our first project in collaboration with TURFPTAx The device working...

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...

The Keyboard
Log from Anatomy of a Philips VideoWRITER
Before I start this log on the keyboard I should mention that I'm in the process of putting all of my writings and software on the Video Writer on a small website. The following is an almost direct copy of what will be the article about the keyboard......

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...

Expansion connector
Log from Stuart Conner's Simple TMS9995 board build
Pinout nc140A15/CRUOUTnc239A14CLKOUT338A13D7437A12D6536A11D5635A10D4734A9D3833A8D2932A7VCC1031VSSD11130A6D01229A5CRUIN1328A4!INT4/EC1427A3!INT11526A2IAQ/HOLDA1625A1!DBIN1724A0!HOLD1823READY!WE/!CRUCLK1922!RESET!MEMEN2021!NMI Pinout matches the TMS9995...

INFORMED HEX DUMP
Log from WIERD PROTOCOL
66 03 60 4D F5 66 03 C0 SOH DE 1D 40 E5 #62 E7 41 EE 70 48 4F 52 50 43 35 33 32 34 37 36 19 06 22 06 22 SOH10 46 30 46 19 SOH42 70 40 40 40 40 40 40 30 30 31 38 30 33 35 33 32 34 37 36 4B 08 08 DC C1 C1 32 DC C1 C1 32 42 B4 42 B4 02 SOH02 02 02...

Peak Performance
Log from SpiroBoard Aeroponics pH / EC / Motor Controller
Below is a picture of a patch that gates the input to the ADC so that it is only looking at the value from the EC probe at the end of the square wave pulse, after the initial transient has settled out. It works really well, dutifully recording the voltage...

[T] Inbuilt A4 Document Scanner
Log from Tetent UMPC [gd0149]
Since I'm unbound by the generic requirements of "the masses" and have complete idea freedom until "the rubber hits the road", as they say, I was wondering about any additional features I could install into Leti. The requirement was that:it had to actually...

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