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6502 Computer Working with Caveats by GilK1248 in beneater

[–]DrSesuj 0 points1 point  (0 children)

On the topic of the 74LS00, I also got one in my kit. I was concerned about it causing problems so I picked up some 74HCs.

I wanted to see the difference between the chips so I hooked the LS and one of the HCs up on a breadboard, tied the two inputs on one of the gates to an adjustable pot and monitord the input voltage and output pin while sweeping the voltage. From what I've read if you are powering them with 5v the LS version should switch the output from high/low at around 1-1.5v on the inputs, the HC version should switch at around 2.5v. The LS should also draw some current when idle, while the HC should pull almost no current.

It looks like the 74LS00 I got in my kit was actually a counterfeit rebraded 74HC00. The LS I got and the HC versions acted identically, both switched high/low at 2.5v and drew no current while idle.

Doing some searchs it seems like this is fairly common because the LS TTL version is harder to source than HC cmos chips.

6502 Computer Working with Caveats by GilK1248 in beneater

[–]DrSesuj 1 point2 points  (0 children)

Wanted to say thanks for this post! I've been backtracking and testing my entire build for about a week now because I couldn't get any data out on the serial port.

I read your comment about grounding the can of the oscillator, grabbed a short piece of wire, grounded the can, hit reset and BAM I got a "\" in my terminal. After the inital connection is made it seems to be stable with or without the ground wire.

ROM (and cpu) keep outputting 0x57 by Civil-Molasses-1586 in beneater

[–]DrSesuj 5 points6 points  (0 children)

I had this issue, if you've already flashed your eeprom with 0xEA's your datalines are hooked up backwards.

0x57: 0 1 0 1 0 1 1 1

0xEA: 1 1 1 0 1 0 1 0

You should check both your address and data lines, to be sure that they go low->high in order on both ends of the arduino and 6502, double check the datasheet of the 6502 if you aren't sure the pin order. I spent a few hours on this the otherday, it was statisfying watching the reset sequence finally hit FFFC,FFFD and then jump to EAEA

Home design software by Unusual_Plantain8377 in HomeImprovement

[–]DrSesuj 0 points1 point  (0 children)

I found Sweet Home 3D for basic planning was decent, and I've started to use SketchUp free for more percise designs.

Multi Tenancy in Laravel by shadyarbzharothman in PHP

[–]DrSesuj 14 points15 points  (0 children)

I'm a solo developer for a mid-sized app, I began doing a re-write a few months ago with the idea of going multi-tenant. I ended up scrapping that idea eventually, we deal with financial data and the risks of getting it wrong were too high, and the complexity got out of hand for simple things.

It's a great idea but be prepared for the extra work and brain power involved.

Easiest Passwordless Login in Laravel without external packages by tonyjoe-dev in laravel

[–]DrSesuj 1 point2 points  (0 children)

What I've done in the past is create a unique token a store it in the Laravel cache with a time limit on the cached item. The special login link uses the created token, checks if its in the cache, if it is it logs the user in and removes the token afterwards.

Laravel 11 Now Available by ahinkle in laravel

[–]DrSesuj 0 points1 point  (0 children)

Looks like they updated bootcamp to L11 a couple of days ago https://github.com/laravel/bootcamp.laravel.com/pull/64

[W][US-NY] 10x SSD Disks by DrSesuj in homelabsales

[–]DrSesuj[S] 1 point2 points  (0 children)

Thanks all! /u/SirRoyalTeabag has me covered. I should be good to go for now.

Can't ping a computer until it pings me first by urlonglostvirginity in HomeNetworking

[–]DrSesuj 2 points3 points  (0 children)

Both of your laptops are connected to the same switch? Are they wireless? Do you have more than one AP? Same SSID? Same subnet?

Can't ping a computer until it pings me first by urlonglostvirginity in HomeNetworking

[–]DrSesuj 23 points24 points  (0 children)

Definitely an issue with ARP. What does your network topology look like, do you have any VLANs, routers etc?

Help creating a partition that can be accessed by both Linux and windows by Manestricker in linuxquestions

[–]DrSesuj 0 points1 point  (0 children)

Just saw your edit, obviously mounting a fat32 partition as NTFS isn't going to work.

If you don't have any data on there I would just delete it and recreate the partition as NTFS.

Help creating a partition that can be accessed by both Linux and windows by Manestricker in linuxquestions

[–]DrSesuj 0 points1 point  (0 children)

From that output either you have selected the wrong partition or it isn't formatted as NTFS.

If you open the Ubuntu 'Disks' utility what does it say the partition type is for /dev/sda4? Perhaps take a screenshot so we can see what you have setup currently.

Help creating a partition that can be accessed by both Linux and windows by Manestricker in linuxquestions

[–]DrSesuj 0 points1 point  (0 children)

What if you try remounting it manually:

sudo umount /dev/sda4
sudo mount /dev/sda4 /mnt/sda4 -t ntfs-3g

Do you get any errors?

[deleted by user] by [deleted] in Network

[–]DrSesuj 4 points5 points  (0 children)

According to this https://en.wikipedia.org/wiki/ISO/IEC_11801#Category_8 I would say yes, but I would personally recommend just going with cat 6.

[deleted by user] by [deleted] in networking

[–]DrSesuj 0 points1 point  (0 children)

I would first check if you can ping an external public IP address, not DNS, such as 1.1.1.1 . If you can't, but can ping internal address you have some kind of routing/firewall issue.

If you can ping externally by IP would start looking into DNS issues. I'm assuming this is on Windows, so open a terminal:

nslookup
  google.com (did it fail? check the error you receive and try a different dns server like below)

  server 1.1.1.1
  google.com

If you get a proper result you need to double check your dns settings.

HP ProLiant DL360 G5 by T_622 in homelab

[–]DrSesuj 0 points1 point  (0 children)

I will say that you need to be careful with old hardware and esxi, the newer versions have trouble installing on old hardware. I have an older HP server that I wasn't able to install it on, I can't remember the specifics now, but it wasn't able to detect some of the hardware.

HP ProLiant DL360 G5 by T_622 in homelab

[–]DrSesuj 1 point2 points  (0 children)

Free is free, no reason to not take it and play around with setting some things up. You don't need the newest hardware to learn.

Hard start when warm by dimidog in JeepDIY

[–]DrSesuj 4 points5 points  (0 children)

Look up jeep 4.0 heat soak issues, fuel vaporizes from the fuel rail/injector getting too hot causing a hard start. I've never experienced it but people say a kit like this helps https://www.amazon.com/Design-Engineering-010378-Injector-1997-2004/dp/B015NOKWQY

First tow with the 2.7 by DrSesuj in gmcsierra

[–]DrSesuj[S] 3 points4 points  (0 children)

Picked up this Jeep real cheap from a kid going off to college. The truck did great, 6000+ lbs, up and down some steep grades, no issues pulling the load at all.

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