+1-323-909-4740 blog@hegars.com

BINWALK

Package: binwalk Description-en: tool for searching binary images for embedded files and executable code Binwalk is a tool for searching a given binary image for embedded files and executable code. Specifically, it is designed for identifying files and code embedded...

Rejuvenating Dry SLA batteries

I had some dead 12v 12Ah batteries from an APC smart ups 1000 that were quite old (md 2009) and very dry. I have replaced them with a set of new 18Ah batteries. I thought I would try my hand at getting these old batteries going again. One battery was showing ~12 volts...

KiCAD Footprints and Symbols

Decided to learn how to build some footprints, symbols and 3D models in Kicad so I used a HC-05 Bluetooth module and it’s chips as a template that was not in the default list using the chips datasheets, the TFBGA96 8x8x0,65mm main chip and TFBGA48 6x8x0.80mm...

DMR radio

Emission Modes 7K60FXD2-slot DMR (Motorola MOTOTRBO) TDMA data7K60FXE2-slot DMR (Motorola MOTOTRBO) TDMA voice7K60FXW2-slot DMR (Motorola MOTOTRBO) TDMA data + voice Radios 10K1F3E TYT MD UV380G https://fccid.io/POD-MDUV380/Test-Report/test-report-4041451...

10-Codes vs Q-code vs Film set radio confirmations

something something about radio transmissions when compared to on set and in the real world 10-1 FILM: 10-1 (Going to the bathroom number 1)10-CODE: 10-1 (Receiving Poorly)Q-Code: 10-2 FILM: 10-2 (Going to the bathroom number 2)10-CODE: 10-2 (Receiving Well) Q-Code:...

EC1204 – AT89S52 and DS1302 based LED Clock

I built the 1204 Kit and it not working, so lets figure it out Physical all the joints seem to be good and test out fine at89s52clockDownload Diagnosis Circuit schmatics EC1204BDownload Checking the AT89S52 Verifying the program I the AT89S52 in an EEPROM programmer...

Radiacmeter IM-174A/PD

http://www.civildefensemuseum.com/southrad/im174apd-1.html TM-11-6665-232-40-7-Dec-81-USAPADownload 50uA Full Swing Meter Using PWM on Arduino requiring a series 100Kohm at 5v to produce 50uA to drive the arm http://tinyurl.com/vdqbuhe Thinking about hooking this up...

EasyDriver and the A3967

https://www.schmalzhaus.com/EasyDriver/ https://www.sparkfun.com/products/12779 https://www.robotgear.com.au/Product.aspx/Details/2940-EasyDriver-Stepper-Motor-Driver Letting the blue smoke out I think I somehow applied a reverse voltage from an unprotected 7AH SLA...

IPv6 – /64 Everywhere

Three AS peers each delivering a different style of IPv6, Announcing a /48 prefix via eBGP An AS with 1 peer delivering a straight /64 (awesome, 10 points!! thanks for playing)An AS with 1 peer delivering a /126An AS with 2 peers each delivering a /127 (plus feeding...

ChromeCast Scripting

https://developers.google.com/cast/docs/media wget https://github.com/barnybug/go-cast/releases/download/0.1.0/cast-linux-amd64 ./cast discover./cast –host 192.168.15.119 –name OfficeTV status./cast –host 192.168.15.119 –name OfficeTV...

4 – 20mA Current Loop

Above Circuit http://tinyurl.com/y5kgx3af With ADC/DAC http://tinyurl.com/y3pbmyzl Analogue Input Digital Output via 4 bit ADC/DAC https://www.instrumentationtoolbox.com/2012/03/basics-of-4-20ma-current-loop.html...

Analyzing a Faulty Cisco IAD2431-16FXS

I have a Cisco IAD2431-16FXS that has an issue with audio from the FXS mouth ports, sending only static, receive is fine Testing with a 600ohm Alcatel TE200 with REN of 1 over a 1000m coil FXS Loopback Tests Lopping the local disables network and I get amplified...

Cisco MDS 9222i Basic Config

<pre class="wp-block-syntaxhighlighter-code">mds9222i# sh run !Command: show running-config !Time: Thu Oct 3 15:25:27 2019 version 6.2(9a) power redundancy-mode redundant feature iscsi iscsi enable module 1 feature fcip role name default-role...

Crazy Disk Layout

Found a set of disk in my pile that came out of a Buffalo NAS root@debian:~# mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Thu May 28 11:42:20 2015 Raid Level : raid5 Array Size : 1953259520 (1862.77 GiB 2000.14 GB) Used Dev Size : 976629760...

HP Storageworks Ultrium 960 LTO-3 pSCSI

HPE Library and Tape Tools https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_0da0741bc19f497d8b35964bef Firmwares in cp030021.exe # mt -f /dev/nst0 stsetoptions scsi2logical scsi2logical – seek and tell use SCSI-2 logical block addresses instead of...

iSCSI/FC/pSCSI

QLA Target Mode? SCSI storage controller: Adaptec ASC-29320ALP U320 (rev 10)Fibre Channel: QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA (rev 03)Storage Array:Cisco MDS...

NetCommWireless NDD-0300 Teardown

Main Board DSL Controller? D1_DSL W8396L01? D1_FAST Le87281 – G.Fast Single Channel Line Driver https://www.microsemi.com/product-directory/g-fast/4139-le87285 U11 UART? J2 Main Controller Catalyst semi? Microsemi? S8383N23SLMD8 Ethernet Transformer U7 –...