Celso Martinho
@celso.bsky.social
👶 From when Mosaic took over Gopher
🏢 VP of Engineering @cloudflare.social
🕹️ Slightly addicted to retrocomputing
🏢 VP of Engineering @cloudflare.social
🕹️ Slightly addicted to retrocomputing
How it started: I'll just get this rare thingy to work, shouldn't take long. How it's going: I might as well reverse engineer the board, learn KiCad and draw the schematics.
January 17, 2026 at 2:47 PM
How it started: I'll just get this rare thingy to work, shouldn't take long. How it's going: I might as well reverse engineer the board, learn KiCad and draw the schematics.
Not what I was expecting.
January 15, 2026 at 10:57 AM
Not what I was expecting.
The endless “artist vs work” debate always generates lots of controversy, but today I’ll focus on the hundreds of Dilbert strips that made me laugh throughout the years.
January 13, 2026 at 10:49 PM
The endless “artist vs work” debate always generates lots of controversy, but today I’ll focus on the hundreds of Dilbert strips that made me laugh throughout the years.
In the retro-computing hobby world, “I’ll get this working in a weekend” always inevitably turns into a multi-weekend rabbit hole. Fact.
January 8, 2026 at 10:59 PM
In the retro-computing hobby world, “I’ll get this working in a weekend” always inevitably turns into a multi-weekend rabbit hole. Fact.
Bye Brazil, love your country. 💛💚
January 3, 2026 at 3:02 PM
Bye Brazil, love your country. 💛💚
Now we're getting places!
December 26, 2025 at 8:23 PM
Now we're getting places!
Alright, let’s dump the ROM and see what's inside.
December 26, 2025 at 8:21 PM
Alright, let’s dump the ROM and see what's inside.
I’m getting quite good at desoldering big chips from PCBs. Having a Hakko and a hot air station helps a lot, but some skills are still needed.
December 26, 2025 at 7:07 PM
I’m getting quite good at desoldering big chips from PCBs. Having a Hakko and a hot air station helps a lot, but some skills are still needed.
It sure is Christmas today.
December 25, 2025 at 11:47 AM
It sure is Christmas today.
I will be forever thankful to anyone who can find me the data sheet for this old V21/V23 modem chip, because I can’t.
December 24, 2025 at 11:36 AM
I will be forever thankful to anyone who can find me the data sheet for this old V21/V23 modem chip, because I can’t.
Huge backlog, this doesn’t help.
December 17, 2025 at 11:50 PM
Huge backlog, this doesn’t help.
Going to a Kruder & Dorfmeister concert in Lisbon, the last of their tour, was certainly the highlight of the weekend.
December 15, 2025 at 11:53 AM
Going to a Kruder & Dorfmeister concert in Lisbon, the last of their tour, was certainly the highlight of the weekend.
[pt] Pérola deliciosa encontrada não sei como pelo @luiscorreia.pt. Em ‘87 este miúdo entretinha-se a enviar cartas para revistas de informática, indignado pela falta de cobertura as plataformas minoritárias.
December 8, 2025 at 3:15 PM
[pt] Pérola deliciosa encontrada não sei como pelo @luiscorreia.pt. Em ‘87 este miúdo entretinha-se a enviar cartas para revistas de informática, indignado pela falta de cobertura as plataformas minoritárias.
If you're near Lisbon and into digital arts & music and retro-computing stuff, Inercia 2025 is happening this Saturday and Sunday. 2025.inercia.pt/en/
December 5, 2025 at 7:02 PM
If you're near Lisbon and into digital arts & music and retro-computing stuff, Inercia 2025 is happening this Saturday and Sunday. 2025.inercia.pt/en/
If you’re in the business of retro-computer hacking, there aren’t enough DIN connectors.
November 28, 2025 at 8:47 PM
If you’re in the business of retro-computer hacking, there aren’t enough DIN connectors.
Ffs, it's a RJ11 telephone cord!
November 19, 2025 at 11:53 AM
Ffs, it's a RJ11 telephone cord!
Next on the bench, who knows what this is?
November 16, 2025 at 10:07 PM
Next on the bench, who knows what this is?
I have no idea who did this, but I sure laughed!
November 15, 2025 at 3:43 PM
I have no idea who did this, but I sure laughed!
How to crash an AI
November 4, 2025 at 10:46 PM
How to crash an AI