“Under the Magical Sky” has received an honorable award and mention in the children’s category from PPN and National Geographic Learning in San Francisco. The book is now part of their catalog. We have achieved the highest excellence in design and manufacturing. If you want to experience this magical journey, please visit our site: Under The Magical Sky
If you have any questions or thoughts you can write to contact@underthemagicalsky.com
Here to not have all Rembrandt van Rijn self-portraits. Only these one of which there are good and large images.
Image source: https://artsandculture.google.com/asset/rembrandt-laughing-rembrandt-harmensz-van-rijn/vgFXBjXYko3rWA
Image source: https://artsandculture.google.com/asset/self-portrait-rembrandt-harmensz-van-rijn/AQHvOEXiF3p9fg
Image source: https://artsandculture.google.com/asset/self-portrait-rembrandt-harmensz-van-rijn/pgESLEqtPqksZw
Image source: https://artsandculture.google.com/asset/self-portrait-aged-23/VwGuMEq_Grsd-w
Image source: https://artsandculture.google.com/asset/selfportrait-rembrandt-harmensz-van-rijn/WAGlk3EYZbNjQQ
Image source: https://artsandculture.google.com/asset/portrait-of-the-artist-as-a-young-man-rembrandt-van-rijn/QgEfUHzCkN472g
Image source: https://artsandculture.google.com/asset/self-portrait-with-velvet-beret-rembrandt-harmenszoon-van-rijn/mQGjCu2ESqQc_w
Image source: https://artsandculture.google.com/asset/self-portrait-with-shaded-eyes-rembrandt-van-rijn/GgEmZsdLFgLVrg
Image source: https://artsandculture.google.com/asset/rembrandt-and-saskia-in-the-scene-of-the-prodigal-son/fAFXpfS8tdF_Eg
It has a different pose and facial expression because it is part of a larger double portrait.
Image source: https://artsandculture.google.com/asset/self-portrait-wearing-a-hat-and-two-chains-rembrandt-harmensz-van-rijn/MgG4MCN2pWPF6Q
Image source: https://www.rct.uk/collection/search#/18/collection/404120/self-portrait-in-a-flat-cap
Image source: https://artsandculture.google.com/asset/self-portrait-rembrandt-harmenszoon-van-rijn/qgHjmzuyB9bkUg
There is another painting from Rembrandt Worksop (made by his pupils?) were he also wears earrings.
Image source: https://artsandculture.google.com/asset/portrait-of-rembrandt-rembrandt-workshop/VwH0YVIZS7toxw
Image source: https://artsandculture.google.com/asset/large-self-portrait-rembrandt-harmenszoon-van-rijn/dQG9VR8cLvD7EQ
Image source: https://artsandculture.google.com/asset/self-portrait/rgElkn0Mx7Hgnw
Image source: https://artsandculture.google.com/asset/self-portrait/-gHQe8vbiHn2xw
Image source: https://artsandculture.google.com/asset/self-portrait-as-the-apostle-paul-rembrandt-harmensz-van-rijn/LwGcE5lQC5dLUg
Image source: https://artsandculture.google.com/asset/portrait-of-the-artist-rembrandt-van-rijn/QgHkNBGhrxU0Ww
Image source: https://artsandculture.google.com/asset/self-portrait-rijn-rembrandt-van/QgHA3WPpbgKD6g
image source: https://en.wikipedia.org/wiki/Self-portraits_by_Rembrandt#/media/File:Rembrandt_Harmensz._van_Rijn_135.jpg
Oilpaintings on woodpanel.
TEMT6000 is ambient light sensor. It is sensitive to visible light much like human eye and has peak sensitivity at 570nm.
Visible spectrum is 390 – 700 nm.
The sensor can handle voltages from 3.3v and 5v. The sensor has been designed into a voltage divider circuit. To read that voltage connect SIG pin to any analog to digital conversion pin on microcontroller.
Ambient light sensor for control of display backlight dimming in LCD displays and keypad backlighting of mobile devices and in industrial on/off-lighting operation.
TEMT6000 measures illuminance (measured in lux (lx). It is a measure of the total quantity of visible light emitted by a source (referred to as luminous flux, measured in lumens (lm) divided by an area in square meters. 1 lx = 1lm/m2.
To get the brightness the sensor measures, we then simply have to measure the voltage on the SIG (also called OUT) pin using the Analog To Digital Sensor and convert those voltage measurements to illuminance values in lux.
To get the illuminance in lux, we first need to convert the measured voltage to the current flowing across the TEMT6000 sensor. This current is also equal to the current flowing across the 10kΩ resistor in the voltage divider circuit, which is I = adc_value/10000kΩ.
Volts = analogRead() * 0.5 / 1024.0
Amps = volts / 10000.0
microamps = amps / 1000000
lux = microamps *2.0
float lux = analogRead(TEMT6000_PIN) * 0.9765625; // 1000 / 1024 = 0.9765625
The datasheet for the TEMT6000 specifies a proportional correlation between current and illuminance: Every 2 µA of current correlates to 1 lx in the illuminance.
I’m using Visual Studio Code + PlatformIO. Arduino Uno
#include <Arduino.h>
#define TEMT6000_PIN A0
void setup() {
pinMode(TEMT6000_PIN, INPUT);
Serial.begin(9600);
}
void loop() {
float reading = analogRead(TEMT6000_PIN); //Read light level
Serial.print("Reading: "); Serial.println(reading);
double volts = reading * 5.0 / 1024.0;
Serial.print("Volts: "); Serial.println(volts);
/*
In the case of 8-bit AVR Arduino boards,
the float type is 32-bits
which makes the limit 6 or 7 digits.
double amps = volts / 10000.0; // = 0
Serial.print("Amps: ");Serial.println(amps);
double microamps = amps / 1000000; // = 0
Serial.print("Microamps: ");Serial.println(microamps);
double lux = microamps * 2.0; // = 0
Serial.print("Lux: "); Serial.println(lux);
*/
Serial.print("Lux: ");
float lux2 = analogRead(TEMT6000_PIN) * 0.9765625; // 1000 / 1024 = 0.9765625
Serial.println(lux2);
Serial.println("");
delay(1000);
}
My summary of the year, some scribbles from notebook:
Scribble from notebook.
The background are gold with gold leaves. This is already second layer and when it is dried up i my add the glazes.
Tauno Erik 
