2156 Results for "%EC%B2%AD%EC%A3%BC%EC%98%A4%ED%94%BC%EB%93%B1%EB%A1%9D%E2%9C%9Aoptime4%E3%80%82com%EC%B2%AD%EC%A3%BC%EC%98%A4%ED%94%BC %EC%B2%AD%EC%A3%BC%EB%A7%88%EC%82%AC%EC%A7%80 %E2%9C%9A %EC%B2%AD%EC%A3%BC%EC%98%A4%ED%94%BC%E1%99%91 %EC%B2%AD%EC%A3%BC%EC%98%A4%ED%94%BC%EC%82%AC%EC%A7%84%E1%99%91 %EC%B2%AD%EC%A3%BC%ED%9C%B4%EA%B2%8C%ED%85%94 %EC%B2%AD%EC%A3%BC%ED%82%A4%EC%8A%A4%EB%B0%A9 %ED%83%80%EC%9E%84"

Peak Performance Revisited
Log from SpiroBoard Aeroponics pH / EC / Motor Controller
I recently revisited the peak detect issues after a long break working on other projects. I was still dissatisfied with the accuracy of the peak detect circuit. I spent an evening playing around with LTSpice trying various tweaks...

Quick update #2 - Analog-digital conversion module
Log from Bio Balance Detector
Hi guys, There are some progress on many fronts. I met with a potential partner company that could connect me with a University research group to dive a little bit deeper into the bio-electromagnetic phenomena we would like to process and show with our...

20230223a - Special Keys and File Ops
Log from ROM Disassembly - AlphaSmart Pro
While revisiting key handler handleKeyScanCode_EE37 and back annotating scan codes into the code, I wind up with this:EE37 handleKeyScanCode_EE37: EE37 13 63 01 04 brclr bCloverKeyDown_63 1 noclover_EE3F ; true if 'clover key down' EE3B 12 61 01 C9 brset...

Z80 (CP/M) Writing to SD Card
Log from 3-Chip Z80 Design
Digging into SD card writes means shifting gears from the Boot BIOS source code since the Boot BIOS code only does reads. The CP/M BIOS code (CBIOS128.LST) which does the reads/writes after booting. Here's the BIOS code for writes to the SD Card: 0754...

Project Planning
Log from Urban-scale distributed hydroponics
This is my first foray into hydroponics, so there will be a lot of learning opportunity for myself, and I will try to log as much of my learnings as possible to make this a richer project log. My general strategy to get this project done is to first...

Understanding how the computer works
Log from Apollo Guidance Computer
Fortunately most of the NASA documents are available. They can be found on-line at https://www.ibiblio.org/apollo/Documents/ The following documents are what I leaned heavily on in gaining an understanding of how this computer...

FieldKit Now: What We’ve Done So Far
Log from FieldKit
Last week, the Conservify team started their tenure at the SupplyFrame DesignLab Residency! This opportunity is something we've been looking forward to for several weeks and we're very excited. This first post is going to outline the current state of...

Dismissing the "new arch", the EVB, and Bitter fighting with Linux drivers (2022-10-09)
Log from Linkia
Original date: 2022-10-09 Related tweets: [1] [2] [3] [4] [5] [6] [7] [8] Dismissing the "new arch" Since the suspend-to-RAM works perfectly on the latest X1000 SoM, there are no strong reasons to keep a separate "EC" MCU anymore. But unfortunately I...

AES-256 Is Not Enough: Breaking a Bootloader
Log from ChipWhisperer®: Security Research
I'd been pushing hard trying to get a demo of how you can break an AES-256 bootloader. This type of bootloader is often used in products for protecting firmware updates and a good demonstration of why you should care about side channel attacks as an...

Encryption Encryption Encryption
Log from WiiChuck
Looking at the registers I noticed something. the first 24 bytes look like they have data and the last 6 bytes look like they have data. This looks like what a WII peripheral in encrypted mode would look like. The fixed 8 byte pattern repeating every...

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...

Initializing ROM during build-time from files
Log from From bit-slice to Basic (and symbolic tracing)
(for related subject, run-time initialization of ROMs/RAMs, see here) FPGA-based designs often have various read-only stores. Their content can be defined in different ways: Inline in the source code (appropriate for smaller ROMs)Using vendor-specific...

Pro Trinket and Pro Micro Compatibility
Log from Pro Trinket USB Keyboard
In preparation for the next logs I wanted to talk a bit about the pin compatibility between the Pro Trinket and the Pro Micro. The reason why I also want to integrate the Pro Micro is that it's more commonly available and cheaper.---------- more ----------The...

Algorithm bits
Log from Modular Humanoid Robot "MARB"
In this log I will discuss some algorithm ideas I have in mind for MARB. Some are easy, some require higher math. 1. Weather forecast MARB will not be connected to the internet. Call me old-fashioned, but it has nothing to do with AI to get for instance...

Delta coding and some stats
Log from PEAC Pisano with End-Around Carry algorithm
With the new harvest, I estimate that the perfect and maximal orbits under m=1M is around 100K. This starts to make quite a large .h file to include in the sieve generator. Not that it's such a concern but scalability, you know.... And embedding such...

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