Llega la traca final para despedir la temporada y para ello hemos preparado un surtido de contenido variado y de calidad extra con el que paliar vuestra insaciable sed de AMIGA y Retro…
Para ello Wrath of the Demon es la sugerencia de Diego para que te vicies este finde.
El tema que expone hoy Míguel potenciará nuestra experiencia como usuarios del AmigaOS con las Commodities.
En Demoscene tendremos el privilegio de escuchar a Balrogsoft y SampleMind de Amiga Skool, explicándonos su experiencia desarrollando su reciente y maravillosa
obra «The colour out of space» 2a en la reciente Revision Party en la modalidad compo Amiga Demo).
Bisarma y Brácula en la Zona Retro nos recordarán como eran los Juegos Budget.
Otro de los platos fuertes será la entrevista a Zener, creador del motor de desarrollo de juegos para AMIGA «RedPill«
Y como siempre, os adelantamos las noticias más relevantes de las últimas semanas antes de dar paso a la presentación de las secciones de la mano de Míguel e Isra.
Bienvenidos al último programa de la temporada del Podcast de Amigatronics.

https://www.ivoox.com/amigatronics-the-podcast-7x08-con-zener-y_md_128695122_wp_1.mp3 Ir a descargar
Itunes (ApplePodcast) https://apple.co/3TghaJm
GooglePodcast https://bit.ly/3D3zShj
Spotify https://spoti.fi/3S4OrWh

No te lo pierdas gurripulli!!

https://amigatronics.wordpress.com/2024/05/10/amigatronics-the-podcast-7x08-con-zener-y-amigaskool-fin-de-temporada/

#amigaos #amigaskool #balrogsoft #commodities #CommodoreAmiga #demoscene #podcast #redpill #retro #samplemind #Videojuegos #wrathOfTheDemon #zener

I replaced the #zener diode with a new one.
The 12V linear regulator wasn't attached to the heat sink, and is known to fail because of that. So, I replaced it with a new one and attached it.
Also, I replaced the #RIFA #capacitor with a modern alternative and removed the power switch.
Sadly it is not repairable and replacements are very expensive, so I'll have to improvise. Maybe I'll add an external one.
#commodore #monitor #repair

I also got a #commodore 1901 #monitor. The boards look very nice, only needing a bit of cleaning. Except one spot on the edge - there a #zener diode had completely rusted legs. Good that the #schematics are available and I could find the value.
Also, the power switch is broken, it doesn't latch on.

Tonight during #WUFO we showed how to turn a cheap Target crystal ball, fill it with mushroom ink and #UFO water, add some cubes with letters, and use it as a weird oracular device, and got some serious hits. #divination

We also heard some #Seattle #ghost folklore and showed an eerie picture from a recent #seattleundergroundtour.

We played with #zener cards from #kreskinsesp and made plans to do a more formal test soon. (1/2)

Your COMMODORE PET computer is equipped with extrasensory perception (ESP) 😱

#commodore #PET #CBM #retrocomputer #ESP #Paranormal #cards #Zener #symbols #experiment #70s #Geek

Two Wire Sensors on LED Strips

While addressable LED strips are all the rage, [Mike] from [mikeselectricstuff] has been working on an installation using the more basic two-wire strips that are simply controlled via PWM dimming. He's recently figured out a tidy way to send sensor signals down these strips without adding any additional cabling.

The circuit in question.

The build uses 24 V LED tape, which consists of gangs of 6 LEDs in series with a forward voltage of 3V. Thus, these strips don't even begin to light until approximately 18V is across them.

By adding a 15 V Zener diode and a resistor across the MOSFET which dims the LEDs, a voltage of around 9 V can be put across the LEDs without lighting them up when the MOSFET PWM dimmer is in its off phase. A PIC10F322 microcontroller and an accelerometer can then be run from this voltage, with the aid of a 3.3 V regulator wired in parallel with the LEDs. The regulator must also be able to handle the full 24 V when the LEDs are switched on.

A transistor is also wired up, switching a 2.2 K resistor in parallel with the LEDs. When turned on by the PIC, this transistor causes roughly a 10 mA current to flow through the Zener diode and its series resistor. The voltage developed across that series resistor can be measured as the transistor is turned on and off. In this case, the pulse width used to turn that transistor on is relative to motion detected by the accelerometer on the end of the LED strip.

Turning the LEDs on at 100% duty cycle prevents the system working, as the pulse widths generated by the sensor circuit can't be detected when the LED line is held high all the time. However, in practice, it matters not -- running the LEDs at a maximum 98% duty cycle eliminates the issue.

It's an ingenious way to send sensor signals down a two-wire LED strip, even if it does take a second to wrap one's head around it. It also seems to do a great job of adding motion-reactive effects to the LED strips in question. It's not the first LED project we've seen from [Mike], either. Video after the break.

[Thanks to Tim Gremalm for the tip!]

#news #led #ledstrip #zener #zenerdiode