Janis Alnis

2025.11. Tech Industry exibition Riga Latvia

Atomic Physics laser institute tour in Old Riga

2025.11. Colours and life in the Universe, a workshop lead by ERA Chair Prof. Bernard Foing, Latvia

Asteroid observations with the 12th largest telescope in the world. Baldone observatory, Latvia

Learning how to fly DJI mini drone (open category under 250g) in Latvia, Riga, Jugla home

Hand crank generator STEM kit

LED Shake light. Faraday electromagnetic induction generator.

Swinging sticks chaotic pendulum kinetic sculpture desktop toy exploration

LED flashers with capacitor voltage doubler get worse efficiency than a Joule Thief booster

Drone seminar 2025 Dronu diena organised by Droni.lv and Droon.ee

Battery-free LED flasher with 4 photodiodes BPW34 as solar panels and a 0.47F supercapacitor

Hand crank generator for blackout, emergency, hiking. Aliexpress 40F supercaps, LED, lighter, USB

Light energy harvesting LED flasher for Joule Thief jewelry office toy

Low-power solar panel LED flasher based on CMOS digital logic 74HC132

2025.10. TRIZ conference in Riga. Laser spectroscopy by professors Sune and Katharina Svanberg

Replication of “SJR-looper” a low power LED driver that runs from a 1000uF capacitor several minutes

Gamma Scout suffers a degraded Geiger tube ZP-1401 comparison with Radiacode

Air plasma metal CNC cutter with water bed. DC invertor LIDL Parkside and LXshow LGK-55A

Digital LED solar blinkers (3 types) from Aliexpress

LED blink office toys that run from roomlights. A supercapacitor is charged by a tiny solar panel.

LED short pulse blink flashers, ultra-low power. CMOS has less consumption than bipolar transistors

Solar charged bycicle tail light. Activated by vibrations and darkness. Red LED pulsed by 74HC132.

Exploring diamagnetic levitation and magnets. Part 2.

Diamagnetic levitation of graphite small specks and water droplet mist coalescing into larger drops

Drone BETAFPV Cetus Pro fun in a playground

Crookes radiometer light science toy.

Magnetic field viewing film. Making custom poles on a ferrite magnet using stronger neodymium magnet

2025.06. Midsummer in Latvia: Līgo - Jāņi

2025.06 Festivāls Lampa, Cēsis

2025.06. Visit to Münster University, Germany.