The factory part number 1312030 (which is discontinued) has two belts. This may help you in finding replacements.
(1) 29" OD, 38 Links (spindle)
(1) 26" OD, 34 Links (motor)
See link belt on Amazon:
You would never guess what a frog thinks about. Please enjoy what is written here.
Monday, April 6, 2026
Saturday, September 20, 2025
ISC DHCP Migration to KEA
My humble advice is don’t. KEA is a boat-load of work and disappointment. From functional changes to design decisions, you will only find complexity and loss.
Lets start with
comments in the configuration file. Their major design decision to use JSON (JavaScript
Object Notation), a data interchange format. While it is “human readable” it is
NOT inherently a configuration file format. Comments in ISC DHCP where text
sequences started with #. Useful everywhere as any text following a # on a
line, is ignored. In KEA comments become a JSON object in a JSON array. So here
is an example:
"user-context": {
"comment": "second
floor",
"floor": 2
}
You can no
longer put it where you need it. It doesn’t help with organizing the elements
of the configuration. You can’t comment-out something you don’t need right now,
but don’t want to delete. And, frankly, it makes the configuration more obscure
and significantly more work. This is just a bad design decision; period.
Verbosity:
From ISC DHCP
configuration of hosts the simple statement:
option host-name
"server-one";
becomes lots of
name/value pairs:
“option-data”: [
{
“space”:”dhcp4”,
”name”:”host-name”,
”code”:12,
”data”:”server-one”
}
]
From ISC DHCP
logging:
log-facility
local6;
becomes this
simple JSON array:
"loggers":
[
{
"name":
"kea-dhcp4",
"output_options": [
{"output":"/var/log/kea-dhcp4.log"},
{"output":"stdout"}
],
"severity": "INFO",
"debuglevel": 0
}
],
Let’s move on to
functional changes:
“ddns-updates”:
true/false scope has been moved from “subnet” and “host” to a global “enable-updates:
true/false”. Isn’t this a loss of functionality?
“update-static-leases”
is obsolete. I have no idea what replaces it if anything.
“qualifying-suffix”
has been rescoped from “subnet” to global.
Dynamic DNS updates
has been moved to a separate server (D2) which must be separately configured
from the KEA DHCP server and managed.
Tuesday, April 8, 2025
Synology RS815+ Would NOT power on
I did a lot of surfing in search of an answer and experimenting. In my case it wasn't:
the power cord
the power supply
the latching transistor (Q4 I think)
It was just the mainboard battery CR1220!
The battery holder is both tenacious and fragile. So be careful when removing the battery. Prying it up from just below the battery while putting some outward pressure on two of the four "clips" should do the trick.
BTW. There are two knurled knobs on the back of the unit that hold in the mainboard which slides out.
After replacing the battery, the unit powered up with no problems. It must be a required input to the power-up sequence. Live and learn.
Tuesday, February 18, 2025
Setting Up pfSense DNSBL with External ISC DHCP and BIND DNS
The following is courtesy of ChatGPT:
Setting Up pfSense DNSBL with External ISC DHCP and BIND DNS
Wednesday, March 27, 2024
Minisforum UM690 Main Board Removal
Last updated: Mar 27, 2024
This particular mini pc presents a puzzle when removing the main board. So, I am sharing my approach in hopes that it helps.
1 - Pry out the two rubbery feet and two triangular corner panels from the bottom; they are held in with some adhesive.
2 - Remove the four Philips-head screws just uncovered.
3 - Use a pick to gently pry off the bottom panel.
4 - Remove the four screws at the outside four corners of the main board. NOTE: DO NOT remove the four screws that are more toward the center of the board; two of which are underneath the memory cards. These hold in the processor heat sink and the metal thermal material to the other side of the board.
5 - Remove the SSD; don't lose the screw.
6 - Remove the Wi-Fi board that hides below the SSD; don't lose this screw either. The reason you are removing this is that the antenna lead is firmly attached to the case.
7 - The metal frame you can see around all four sides is firmly attached to the case. So, slip a pick between the metal frame and the front of the ethernet connector. Use this to gently pry the case side outward and the board upward. You may also need a second pick slid in between the metal frame and the far USB connector to keep it from catching on the metal frame. A little patience here and the board will be free of the case.
That's it. Mystery solved. Enjoy.
Monday, February 26, 2024
Software/Firmware Updates Ignorant/Annoying?
When a user installs a software update, why does the user have to answer any questions? The base/previous version is already installed and running.
If the user has asked/agreed to an update and unless there are new options or other critical user interaction required, the software should just update itself silently.
Millions of person-hours are wasted with the user answering the same questions for every update -- over and over.
Samples of stupid questions:
Agreeing to the license (didn't the user already do that?)
Does the user really want the update - duh?
Click finish to complete the update (like there is another option).
Saturday, February 24, 2024
NPN Transistor Saturation Mode Laboratory Measurement
The WWW has a lot of information, but finding actual circuit measurement of an NPN transistor saturation mode was, well, I never found any. Hence this experiment. I chose a common 2N2222A in a TO-92 package. On the DCA Pro 75, it measured:
hFE = 265 at Ic = 5.01mA
Vbe = 0.755V at Ib = 5.00mA
VceSat = 0.013V at Ic = 5.0mA and Ib = 1.00mA
The testing setup is in the following diagram:
A good description of a PN junction is give in this video: Forward biasing a PN
junction.
A good description of an NPN transistor is given in this
video: NPN Transistor
Working.
Now for the actual measurements of our sample 2N2222A
transistor:
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