Parallel ports
Parallel switchboxes Don't use a parallel switchbox if you want to do high speed transfers. I have not yet found one, manual or automatic type, that is reliable at high byte rates. PS/2 PS/2 (or...
View ArticleImplementing a software modem
To test the protocol, use two sound cards, line out on one to line in of the other. Use symbol rate between 2400 and 3200 baud to approximate telephone line conditions. Modulation protocols: Bell 103...
View ArticleBoost C++ static libraries
I was compiling a project with Visual Studio 2005 that requires the Boost libraries. Unfortunately I did not have them on my system, even though I had Boost itself installed in c:\boost_1_33_1. The...
View ArticleWhy does Linux only see 1GB of my 2GB SD Card?
This mailing list post explains why. A 2GB SD card reports a 1024 byte block size instead of the 512 byte block size that all smaller SD cards employ. However, I/O is performed in 512 byte blocks by...
View ArticleGetting along with the VIA EPIA-M10000 Mini-ITX HTPC motherboard
I got this motherboard for free with a 933MHz Ezra-T C3 processor. It is still the cheapest option for a HTPC/MythTV box. Linux has low enough system overhead to make it usable and also has fairly well...
View ArticleFortron/FSP Mini-ITX power supply repair
My little Mini-ITX system froze and would only sometimes power back on, only to freeze shortly thereafter. The problem was two 1000uF 10V capacitors in the PSU which had developed bulging tops and ESR...
View ArticleHow do I charge a completely dead battery in my Creative Zen Xtra MP3 player?
One unfortunate circumstance that every Zen Xtra owner has run into is a discharged battery, either due to use or non-use, that the unit refuses to recharge. This usually manifests itself as an endless...
View ArticleMy Nexus 5 has an erratic touch screen that jumps all over the place
Symptom: The Nexus 5 Android smartphone occasionally registers touchscreen clicks in the wrong place or when a click was not requested. Turning the screen off and back on in a normal touchscreen...
View ArticleMy Samsung Galaxy S5 smartphone charges too slow, how can I make it faster?
I noticed lately that as a heavy smartphone user, the charging rate of my Galaxy S5 running the Android v6 Marshmallow firmware was barely outpacing drain rate. Sometimes even an overnight charge...
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Repair Black Box ServSwitch EC Series KVM IP Switch
KV9316A I repaired a broken Black Box KV9316A 16-port KVM-over-IP switch through replacing electrolytic capacitors and an internal battery. The short story is that a manufacturer of several internal...
View ArticleI just want to PXE-boot my PC with some image on a Debian-based server.
This should be the least-hassle method of booting a PC over the network from a Debian-based server using the Intel PXE interface. I set this up to PXE-boot memtest86+, but anything that can be loaded...
View ArticleInstall Linux on an Android-Based Lenovo Yoga Book (YB1X90F)
Having a Linux distribution installed on an Android netbook can be the best of both worlds. Leveraging the Linux kernel already running on any Android device, a Linux userspace will be native and fast...
View ArticleDebian Buster can’t boot because initramfs doesn’t activate a LVM /usr volume
One of the great things about Debian is the ease of migrating an installation through multiple releases via the dist-upgrade facility. However, regardless of the technical design, over time opinions...
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