Autumn Colors Mix

 Here are several  photos made recently in Markham Arboretum in Concord (CA). All photos shot with Pentax KP camera and DA Limited 35mm  lens.

The tree above is Peruvian peppertree also known as California Pepper Tree. It is native to South America but as you can see it prospers in Northern California  as well. 

According to  Google lens this is Banksia ericifolla - plant naive  to Australia. 

Angel's Trumpet & Cactus Fruits

 

I made picture below on neighboring street. I never saw such  flowers before.

Google lens helped me to identify the plant. It happened to be Angel's Trumpet or Brugmansia (that how  genus to which this plant belongs named according to corresponding Wikipedia article). It is native to South America but as you can see it grows in northern California quite well. Still you can seldom see it around. The reason is that this plant is poisonous. One can get poisoned just by simply trimming it. So not many people want to risk planting Angel's Trumpet. What kind of precaution this home owner uses  would be nice to know.   

Fall is in full swing now. Couple of photos below are of cactus bearing fresh fruits.  Looks nice!

 

Halloween 2025

 It is time to post again about Halloween decorations. Here is how our house window looks today.

This year my installation is mostly the same as it was previous year. I just did some minor update: added LED filaments  to edges of the Bat. And I changed background of the Ghost on the left. It is now transparent (not solid as it was  last year.)

Here are some more photos I have made in our neighborhood. Very likely most installations elements are  purchased ready. Still to blend it  into the yard  and arrange in to groups requires a lot of creativity.

Giant skeleton breaking out of the garden soil.

     Very sweet little company.

Theme utilizing the spider net is very common.

This Beast just waits for the Beauty. 

Battle to Protect the Apple Harvest

 

Two years ago I published post "Apples&Birds". That was about how we prevented birds from destroying our apple harvest.  The main subject of the post was how to put bird netting around apple tree. Within last two years I refined that technique and on photo above you can see latest installation. I believe it looks much better now. In addition  to bird netting  I put wooden barrier around the trunk. The purpose of it  is to keep away from the tree rodents (squirrels and, possibly, rats.) Obviously such a low barrier can't stop rodents on its own, but sprinkling its regularly with "Squirrel Stopper" liquid should do the job. Let us see how it will end up eventually in October, when there will be time to pick up apple fruits.

I published detailed description of the project on my Instructables Page.

Here I would like to show method which I used to install  wooden barrier. I came to this method on my own. There are two components I use for installation:

• Electrical two whole strap (1/2 ").
• Anchoring  spike.

 Strap I normally attach near the  edge of the board  (~ 1/2 inch from the edge).

Than after putting board on the ground I nail it to the soil  through the strap opening with anchoring spike.

This method  could be used even for regular bender boards in place of bender board stakes.

Update on October 13, 2025. It is time to collect the harvest. Most of apples indeed were safe. Here are some apples from the harvest under the  guard of our corgi.

         

V or W? Does It Matter?

 

Took this picture couple of days ago at the local Costco store.

If you read the inscription “buffalo” on an elephant’s cage, don’t believe your eyes.

(C) K. Prutkov

That's it. That's  the post.

Raise the Flag

 Today is the good day to raise some flags. All photos in this post I made last Sunday in the city of Benicia, CA.

Photo above made in front of  Benicia wood shop. Honestly I don't remember if this hero always holds the flag or only on major holidays.  

These flags are always up. I observe the same view for many years in any day of  any year. Only car becomes more and more rusty.

Two "beautiful" flagpoles, but no flags. Why?

 

Chipmunk? Raven? Gull

 There are three pictures  of  alive creatures I made yesterday with my Pixel Phone near Alameda Beach.

First one I believe is  chipmunk. Why not squirrel? There were plenty of them and no one climbed on the trees. And they all looked smaller and there tails were not bushy. But  chipmunk expected to be striped, and these were not. So I put question mark in the title.

Is this bird crow or raven? I do not know. The only bird I know for sure was raven is one which I saw in London Tower. For the rest I simply can't know the difference.

The last one is sea gull, no doubt.

 

Rocking Chair

 

We found this child rocking chair at the local charity shop. Hard to tell how old this chair is, but most likely it was made not in this century. Wooden frame of the chair was intact, but its back and seat lost net. It was not even clear what kind of net chair had previously: straw, wire, or rope.  We bought this chair with intention to give it a new life. (Alas, I did not make the picture of the chair right when we took it from the store).

This utility rope I bought at the Ace Hardware store. Diameter of rope 3/16 inches fitted perfectly. It is a little bit less than size of holes in the chair frame. Strength 300 lb is more than enough for the project.

For stringing I have chosen the simplest conventional pattern. The same pattern you usually see in tennis or badminton rockets. I did stringing just with my hands without using any machine or tool. My muscle strength was more than enough for the job. 

Two years later the new net holds just fine.

Northern Hemisphere, Southern Hemisphere, Magic Number Seven, and Sixteen LEDs

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On the photo above you can see digital clock. While it has only sixteen LEDs it is twenty four hours clock, which shows time with fifteen seconds precision. Appearance of this timepiece  is non-traditional and most people  may say that using it to read time would be not easy. In this post I'll try to disprove this claim.

Let us start with this episode of StarTalk Youtube channel. Here Neil deGrasse Tyson explains  the reason why all mechanical clocks (almost) have hands moving in the same  (clockwise) direction.

This episode only fifteen minutes long, but in case you are too busy to watch it  I'll provide short brief.

1. Precursor of mechanical clock was sundial. During the day  shadow of sundial gnomon moves  following the sun.  Inventors of first mechanical clock  built it in such a way that hands of clock   moved  similarly to shadow of gnomon. This is how  clockwise direction appears in our life.

2. Shadow of sundial moves clockwise only in Northern Hemisphere. In Southern Hemisphere shadow of sundial moves counter-clockwise. If mechanical clock would be invented in some place  to the south of the equator  clock scale and clock hand movement  would be opposite of what we have now. This  picture of a backward clock shows us how southern invented timepiece may look. You can buy such clocks on Amazon and after some time even get used to it. 

3.  Apart of  clockwise and counter-clockwise movement Neil in this episode discusses how invention of digital clock  changed human perception of the time.  Mechanical clock makes human think about time from geometrical perspective.  Angle between axis  and clock hand corresponds to the time which already passed or left. Recent invention of digital clock creates illusion of precision but deprives us from geometric association.

LED clock presented here is a hybrid. It works partially as a regular (like invented in Northern Hemisphere) clock and  partially as backward (invented in Southern Hemisphere) clock. And I want to think that it is a hybrid in other aspect: while be digital it still  gives some geometry perspective. To understand this timepiece  interface I invite you to play with the web model:  Half-Dial-Clock-Model Link

In case you don't want to click unknown link you can play with model locally. Here is my GitHub repository https://github.com/jumbleview/Clock16  You need to copy content of directory p5model

to your computer and open file index.html  with browser of your choice.

Model has four clocks,  which all synchronized and show the same time.

1. First clock at the left is the regular analogous clock. Nothing to comment here.

2. Second clock works similarly to the first, apart of the fact that in place  of clock hands there are circular arcs. Normally clock shows time by  angles between vertical axis and hands . This arc clock shows time by angles occupied by arcs (outer arc for minutes, inner arc for hours ). Arcs start at twelve mark and grows clockwise. 

3. Third model is a half-dial version of ark clock. For hours less than six and minutes less than thirty  reading the time is not different of the previous clock. Arcs start at twelve mark and grows clockwise. But when hours are in the range 6..12 or minutes are in the range 30..60 there is the change. Hands of the regular clock under these conditions  are positioned at the left side of dial. But for this arc clock there is no left side. Arcs here occupy the same right side but there are change of starting points   and direction  where arcs grow. Under these conditions arcs start not at the twelve mark but at the six  mark and they grow counter-clockwise. That way clock show hours from 6 till 12 and minutes from 30 till 60. In other words this clock works closer to normal clock for hours from 12 till 6 and minutes from 0 till 30. Otherwise this clock works closer to backward (Southern Hemisphere) clock. 

4. Fourth  clock is similar to the previous model but arcs are dotted not solid. This clock does not need dial marks: dots itself are marks. White dots of inner half-dial shows hours, green dots of outer   half-dial show time with five minutes precision. Additional  one minute precision achieved by a color of the last dot of minute arc. Just add color reading to the time provided by green dots (for cyan add +1, for purple add +2, for red add +3, and for blue add +4 ).  This last clock model is very close to the real LED based clock  (just substitute dots with LEDs). 

Model allows to play with clocks dynamically. Three time modes exist:

1. Manual mode. Top slider allows to change clock time.

2. Real time mode. Clock shows current local time on the machine where browser is running.

3. Simulated mode. Time change is simulated (bottom slider allows to increase or decrease simulation speed).

Real LED clock is different of dot half-dial model  by having two more lighting elements. 

1. Central LEDs changes color each fifteen seconds (cyan, purple, red, and blue). When clock is in set mode this LED is dark.  

2. LED on the left part of the clock is AM/PM flag. This LED is OFF during AM half of the day and ON during PM half. 

Clock is built around Atmega328p microchip. Circuit diagram, C program and Microchip Studio project you can find in the Git repository:  https://github.com/jumbleview/Clock16

And one last thing to say about the project. The clock has seven LEDs on the hours scale and seven LEDs on the minute scale. There is known psychology phenomenon:  "Magic Number Seven, Plus or Minus Two".  Invented by psychologist George A. Miller, it argues that  seven is  number of items human can keep in short-term memory to operate. Anything significantly more is out of cognitive capabilities of average person.  In  this regard clock presented here looks just right. I believe it is easy enough to get used to its interface. 

Not Really Tiny

 Until recently I used for  my hobby electronics projects two types of microchips:

• Atmel Atmega328p (in case I needed at least ten in/out pins);
• Atmel Attiny85 (if  five or less in/out pins are enough).

But recently I discovered some new for me members in  Atmel family of devices: Attiny261/461/861. These microchips are not actually that tiny:  20 pins providing  16 in/out signals. On the photo below you can compare  Attiny461 in the middle to Attiny85 on the left and  Atmega328 on the right.

 It  occupies less space on a breadboard than Atmega328, but  still big enough for many hobby projects. But what makes this chip outstanding is the fact how convenient it is  for breadboard prototyping. Look at  pinout of this chip in PDIP package:

As you can see all bits of the A register are on the right side, all bits of the B register  are on the left side. Bits are numerated from the top to the bottom. Very easy to remember and really convenient!  And all pins to connect  AVRISP MKii programming interface are located on the left side of the chip.  That allowed me to make flat vertical adapter  and use it during prototyping with the breadboard. On the picture below you can see circuit with Attiny461 chip, two multi-color LEDs and adapter.

I believe AttinyX61 will find some more usage  in my upcoming projects.

The Prices Are Down!

 

Here you see the photo with  the price stand on the gas station in Lafayette (Bay Area, California). Photo I made on the last day of 2024 year.  One year ago (thirteen months to be precise )   I made similar photo. You can find it in this post: 'autumn colors'. To make a comparison easier I put the same photo again here.

As you can see prices of the gasoline are down almost by 10%! Not bad. There are some more positive changes: green grass instead of mulch. Bench disappeared as well, but I can't tell is it for the good.

It would be interesting to see where we will be at the end of 2025.

And Happy New Year btw. (Photo of  some front yard   on our neighboring street).

 

Halloween 2024

 Several photos I made this year in our neighborhood. 

This banjo duet plays nice country style music.

Front yard jazz band is on pre-Halloween rehearsal. 

Kids, does these toys  scary you?

This is an election year after all. Steve Garvey and his supporter.

Guards of the Star-Sprangled Banner.

Resting couple.

And the last video is of our house front window.  That is how it looks this Halloween.