92 Results for "《〈 문의 OIO↗5793↗7458 》〉 셔츠룸후기た《〈 문의 OIO↗5793↗7458 》〉 ⑷plenty㎋셔츠룸후기셔츠룸후기んteeth 셔츠룸후기선릉셔츠룸 강남셔츠룸￦셔츠룸ⓤsilverⓞ"

Trial and Error
Log from An Old Fashion Acoustic Modem for the iPhone
Trial and ErrorOptimising the code is tricky as there are so many parameters. One approach is to extract the data from the Arduino and model the code in Excel. Once the Excel model faithfully mirrors the Arduino the the parameters can be tested. Here...

Bell 103A2 Modem Debug
Log from An Old Fashion Acoustic Modem for the iPhone
Loopback TestI had some problems with the audio loopback so I had to drop back to a direct loopback.Here is the signal from the first stage lowpass:Not pretty but functional. Some noise is probably a good idea for testing and optimising.Here is the demodulator...

PCB design updates and updated components list
Log from OSHW GNU/Linux PowerPC Notebook
As we stated in a previous log, we have already contracted ACube Systems and the PCB design work has started. This post is a first report about the work in progress in relation to the PCB design. These days, the designer is analyzing the Pericom Switch...

Going further
Log from Numitron Hexadecimal display module
The module works as expected but it's not over : I could spare at least 20 to 30 diodes. Some diodes appear to be back-to-back and there are 27 such pairs. This could save 27 diodes. However the number pairs differing by 1 go to different rails and can't...

Another mistake
Log from Numitron Hexadecimal display module
Do you remember this picture from the last log ? OK and now, let's think again about how the diode matrix was optimised.The short version is : the digits 5, 6, D and E are bork. This means that my carefully optimised diode matrix is invalid. I have to...

A new ROM layout generation script
Log from Numitron Hexadecimal display module
I have just uploaded convo7seg_09.html which computes the ROM configuration from the updated digits. As I wrote in a previous log, the lines 5 and 6 must be swapped, or the output is totally messy. The swap must be integrated in the initial array,...

Subtle modification to code needed
Log from Internal Resistance of Lead Acid Batteries
I've held off posting the updated code for the x4 resolution enhancement. What I found when I ran the test on my battery 18 times in succession was the internal resistance fell. I need to try a longer delay before measuring but time is short tonight....

Choosing the gates
Log from YGREC8
In case you haven't heard the news yet, there is an open source PDK in the making for a 130nm node, and a promise of free, gratis chips ! https://hackaday.com/2020/06/25/creating-a-custom-asic-with-the-first-open-source-pdk/ This is what I had been preparing...

INC8 ASICified
Log from YGREC8
After spending some quality time in the ASIC world for 107. Choosing the gates, it was time to practice a bit. The target of choice is of course the INC8 unit, which has been significantly modified after a little session with circuitjs : The circuit...

Control & Timing Board
Log from Building a PDP-11
OK, while I'm waiting on parts to get the M8047 working, let's go back and look at the control & timing board. Again, the goal here was to use parts I had on hand and that rule applied to the PCB and sockets as well as the chips. I had...

PARTS AND TOOLS
Log from Battery Charging Through Shoes
The following lists are divided into 2 categories. The first category consists of things you NEED to complete the project, while the other list consists of things that are very HELPFUL. Things that you NEED: Shoes (duh!)Piezo electric elements (x14)...

Air Hacking Hack Chat Transcript
Log from Air Hacking Hack Chat
Stephen Tranovich12:05 PMSpeaking of which, let's get this Hack Chat started! A BIG welcome to @Amitabh Shrivastava for joining us on today's chat. Why don't you start us off by telling us a little about yourself? Boian Mitov12:05 PMWelcome @Amitabh...

Floppy Controller
Log from HP 4952A turned general purpose CP/M machine
x86 ASM is not a pretty sight. x86 addressing sucks. So I was banging my head on the wall with reverse engineering the main memory board when I figured "Hey, I have the full schematic of the floppy board, why not just use it as the main processor instead?!"...

Arithmetic Unit
Log from Simple ALU from discrete components
The ALU (Arithmetic Logic Unit) is arguably is a heart of any CPU, which is doing the operations on the bits and bytes of data. Here I am making an Arithmetic half of it, the circuit which, in my case, is going to do additions and subtractions on 8-bit...

The Control Panel
Log from Simple ALU from discrete components
Building the Arithmetic Unit is great, but as it is there is no simple way to assess its workings. As I've built it, I am personally know what to look at, but for most outside people, the shining of the LEDs on the board is still cryptic. Also, by no...

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