Author Archives: Tauno Erik

Lovely letters

Psalter produced in the second half of the 9th century, possibly in northern France. Following the Psalms, which were heavily annotated with commentaries in later centuries (mainly the 14th and 15th centuries), the Psalter is followed by the Canticles as well as a fragment of a Litany of the Saints not produced at St. Gallen.Continue reading “Lovely letters”

Depiction of women in heraldry

St. Gall Abbot Ulrich Rösch’s (1462-1491) book of heraldry, containing 1,626 coats of arms of prominent people from the laity and the clergy, mostly from the southern region of Germany. This heraldic book was probably prepared in the Heidelberg workshop of Hans Ingeram for an unknown customer from the area between the Neckar River andContinue reading “Depiction of women in heraldry”

My home environment and air quality monitoring system

We often hide the electronics in a box. And cases can be done well and nicely. But when our main interest is electronics then it is sad to hide it. That is way like to do it the opposite way. Sensors will measure particulate matter (Ultrafine dust PM2.5 and fine dust PM10), co2, TVOC, ambientContinue reading “My home environment and air quality monitoring system”

Dust sensor

Nova PM sensor SDS011 can measure fine dust and smoke = particulate matter (MP) concentrations in two categories: Ultrafine dust particles with a diameter of 0 – 2.5 micrometres (μm/m3). Output PM2.5 Fine dust particles with a diameter 2.5 – 10 micrometres (μm/m3). Output PM10 The sensor is designed with a built-in fan to ensureContinue reading “Dust sensor”

Fridays For Freedom

Only on July 1st, the #HongKong police conducted more than 370 arrests. It’s time to fight back. Join #FridaysForFreedom, the counter-action organized by @now4humanity. See you in the streets, let’s show #China what we got!  http://www.now.world/fridaysforfreedom Liberate Hong Kong revolution of our times! 光復香港 時代革命