Dessa fem korta videon ska visa hur man mäter frekvensbeteendet hos enkla RC-filterkretsar med ett analogt och med ett digitalt oscilloskop.
Del 1 handlar om uppbyggnaden av kretsen på en kopplingsplatta. Del 2 handlar om justeringen av det analoga oscilloskopet. Del 3 handlar om mätningen av amplitud och fas med tt analogt oscilloskop. Del 4 handlar om justeringen av det digitala oscilloskopet. Del 5 handlar om nvändningen av det digitala oscilloskopet. ... https://www.youtube.com/watch?v=zZ0iGmWOdAQ
When trying to prepare for the recording of an opamp simulation I discovered that the user interface of the July and August 2020 versions (Win 10 64bit) of LTspice both seem to have a glitch.
List values for the simulation command or a .step command cannot be altered once entered.
On my laptop I still have the March 2020 version where the UI behaves correctly.
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https://www.youtube.com/watch?v=mI_TpNdA_wQ
Controlling an 8x8 LED matrix from within a timer interrupt on the ATmega328.
00:45 the 8x8 LED matrix module
01:00 modifications of the wiring from Part 1 of the lab
03:30 connecting PB3-PB0
04:30 connecting PD3-PD0
05:30 connecting PD7-PD4
06:00 connecting PB7-PB4
08:00 connecting the power and see the old code running
08:30 interpreting what we see on the display
11:00 the new font for the 8x8 matrix
12:30 the changes in the interrupt service routine ISR()
13:50 adapting the data direction register DDRB
16:00 uploading the new code
17:00 modifying the code to count in hexadecimal
19:00 debugging a problem with the font
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https://www.youtube.com/watch?v=P_gEDwIiFWs
How to split up a number in a variable into the individual parts to be shown on the digits, ones, tens, hundreds and thousands.
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https://www.youtube.com/watch?v=QwnZqNeUxIw
A short animation showing the concept of an 8-bit binary adder, adding together the decimal numbers 87 and 202. The rendering was done in POV-Ray, http://www.povray.org/.
The individual stages add a single bitposition, an occuring carry is moved forward to the next higher bitposition to the left.
En kort animering av en 8-bit adderare som adderar ihop de decimala talen 87 och 202.
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https://www.youtube.com/watch?v=IRYB8IIbf7Y
In this video I show the difference between fast pulse width modulation and phase-correct pulse width modulation in an AVR microcontroller.
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https://www.youtube.com/watch?v=iKF-88gzkIk
Den 30 april 2022 var det dags igen för forsränningen på Fyrisån i Uppsala. Här kommer en bildserie med alla 120 flottar.
Musik: Green Fields by Azovmusic, License #: 19192455483
Kamera: Pentax K200, Sigma 28-300mm; Panasonic GX800, Lumix 45-150mm
Software: ThumbsPlus, Davinci Resolve
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https://www.youtube.com/watch?v=TdPRp4LA6h8
Sorry - no audio in this video. If time permits I will either voice-over the video or re-record it later...
Now I have received the lab boxes with electronics parts from https://www.electrokit.se and it is time to add some last minute bonus plus the microcontroller boards. There is also some soldering to be done on the real-time clock module and a little cutting for the potentiometer.
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https://www.youtube.com/watch?v=uqCPt9Ljpyw
3D animation showing a sine wave as the 2D projection of a rotation in the complex plane.
3D-animering som visar en sinusvåg som 2D-projektion av en rotation på det komplexa talplanet.
3D-Anmation eines SInussignals als 2D-Projektion einer Rotation auf der komplexen Zahlenebene.
link to the POVray source code: https://pastebin.com/g1Qyn1mM
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https://www.youtube.com/watch?v=YVLEsxq2kEA