#passivecomponents — Public Fediverse posts

Guía para construir un Amiga 4000T desde cero

John “Chucky” Hertell ha publicado la primera y segunda parte de una guía técnica para construir un Amiga 4000T desde cero, con enfoque totalmente práctico y avisando que no dará soporte a quienes se desvíen del montaje indicado.

La primera parte recomienda empezar por las daughterboards: placa de conectores y Drive I/O (terminación SCSI, disquetera, lógica 74LS) y la placa de Audio/Video (chips de señal como el CXA1263AM y jumpers para audio de CD). Se destaca un punto crítico: los conectores DSUB requieren modificar sus laterales para encajar. También se detalla el cableado, con dos ribbon cables de 40 pines de longitudes exactas: 20 cm (SHORT) y 25 cm (LONG), conectados según etiquetas para evitar daños en chips como Paula o las CIAs.

La segunda parte entra en la motherboard, donde la alimentación con fuente AT exige seguir la regla de “cable negro al centro” para no quemar la placa. Hertell remarca la soldadura de zócalos PLCC como principal fuente de fallos y propone avances por hitos: comprobar sincronismo tras montar chips como LISA/ALICE/FAT GARY, ajustar el jumper del reloj CPU (INT/EXT según CPU/aceleradora) y usar DiagROM para pruebas iniciales. Finalmente se cubren memoria (hasta 16 MB de Fastmem en placa), recomendaciones de terminación SCSI y detalles de Kickstart 40.70.

Design Constraints Bring Lockbox to Life - One of the most paradoxical aspects of creating art is the fact that constraints, ... - https://hackaday.com/2025/04/27/design-constraints-bring-lockbox-to-life/ #passivecomponents #combination #woodworking #lockbox #keypad #relay #lock #art

Design Constraints Bring Lockbox to Life https://hackaday.com/2025/04/27/design-constraints-bring-lockbox-to-life/ #passivecomponents #combination #woodworking #Lockbox #keypad #relay #lock #Art

Passive Components Get Better - When you want to talk about cool new components, you are probably thinking about c... - https://hackaday.com/2023/09/27/passive-components-get-better/ #passivecomponents #parts

Trying to order a 1200uf 10v capacitor for my monitors power board, so i can get on with my novel...i think I had reached the end of my tether when I wrote the email attached, but, I have literally spent all day hunting in Malta and then online for something that cost 83c, but I have to buy a minimum of 5 of...to then be shafted on the postage because the website doesn't know geography. #onlineOrdering #passivecomponents #email #writng #writingCommunity #customersupport

Trying to order a 1200uf 10v capacitor for my monitors power board, so i can get on with my novel...i think I had reached the end of my tether when I wrote the email attached, but, I have literally spent all day hunting in Malta and then online for something that cost 83c, but I have to buy a minimum of 5 of...to then be shafted on the postage because the website doesn't know geography. #onlineOrdering #passivecomponents #email #writng #writingCommunity #customersupport

Trying to order a 1200uf 10v capacitor for my monitors power board, so i can get on with my novel...i think I had reached the end of my tether when I wrote the email attached, but, I have literally spent all day hunting in Malta and then online for something that cost 83c, but I have to buy a minimum of 5 of...to then be shafted on the postage because the website doesn't know geography. #onlineOrdering #passivecomponents #email #writng #writingCommunity #customersupport