Üks LED valgusti 15 LEDiga. LEDe juhitakse läbi WS2811 kiipide, mis lubab kõikide LEDide heledust kontrollida individuaalselt. Tahaküljele saab kinnitada ka Seeedstudi XIAO arendusplaadi. Või siis kontrollida eraldi oleva mikrokontrolleriga. Mina kasutan siin ESP32te. Neid valgusteid saab ka järjestiku mitu tükki üksteise järgi. PCBd valmistas ja printis PCBWay. Komponendid jootsin ise. PCB läbimõõt 10cm.
Tag Archives: led
Biovälja spektrograaf
Andur mõõdab kehalt tagasi peegelduvat infrapuna (IR) kiirgust ja arvutab selle järgi pulsi sageduse. Samuti amplituudi, kuna on rõhk kõige kõrgem ja madalam, mida kajastab vastavalt põlevate LEDide hulk. IR väärtustest arvutatakse ka LEDide värv.
Coat of arms of the accountant
I like history and I like medieval European coats of arms. Of course, nowadays, their design has its own rules and order. But when I have searched the early ones and found some. They can look wild. So I thought to make some mixed ones — medieval combined with modern electronics. The hardware part isContinue reading “Coat of arms of the accountant”
Automatic darkness activated light
It uses special candle flickering LEDs.
Joule thief candle
This is a basic Joule thief circuit. It uses one AA (1.5) battery. When batteries are almost empty. Then there is actually still lot of energy. And it squeezes all energy out of it.
Ultrasonic distance measurements – freeform circuit
If you stand in front of it, it measures distance between you and displays it.
Tauno Erik 