Dan M0WUT
@m0wut.bsky.social
RF engineer, ham radio operator (M0WUT/W0LID). Interested in PCBs and just about anything you can put on them
I wanted an HDMI switch that I could control from my PC for cheap. This 5 port had a remote on a 3.5mm jack connected to an IR receiver so I thought that would be easy to do a replay attack on. One trip down the rabbit hole of IR remote control protocols and this Arduino can now change the channel!
January 22, 2026 at 10:37 PM
I wanted an HDMI switch that I could control from my PC for cheap. This 5 port had a remote on a 3.5mm jack connected to an IR receiver so I thought that would be easy to do a replay attack on. One trip down the rabbit hole of IR remote control protocols and this Arduino can now change the channel!
That'll do for some soldering practice. This is the uSMD board (github.com/arthurbenema...), small caps are 008004 = blooming small. Yes, there's loads of space and generous footprints but still a decent challenge. 0805 resistor at top for scale
January 7, 2026 at 11:11 PM
That'll do for some soldering practice. This is the uSMD board (github.com/arthurbenema...), small caps are 008004 = blooming small. Yes, there's loads of space and generous footprints but still a decent challenge. 0805 resistor at top for scale
Slate coaster + nerd + laser =
October 29, 2025 at 9:58 PM
Slate coaster + nerd + laser =
Why could I possibly want to redesign an Ali Express DCDC 3 times? I'll be talking at the RSGB Convention on the importance of switch mode power supply PCB layout in a month's time. Would be great to see you if you're around.
September 17, 2025 at 8:12 AM
Why could I possibly want to redesign an Ali Express DCDC 3 times? I'll be talking at the RSGB Convention on the importance of switch mode power supply PCB layout in a month's time. Would be great to see you if you're around.
PSU dragged into the modern era by adding a (horribly hacky) Arduino Ethernet to RS232 adapter. Now all my older test kit can be accessed by any machine rather than "the special raspberry pi plugged into everything"
February 2, 2025 at 7:13 PM
PSU dragged into the modern era by adding a (horribly hacky) Arduino Ethernet to RS232 adapter. Now all my older test kit can be accessed by any machine rather than "the special raspberry pi plugged into everything"