L'Etat, Chez Moi
@sys64738.bsky.social
I like to fix things. Especially old electronics.
He/Him
Background image by Tetsurou Kobayashi
He/Him
Background image by Tetsurou Kobayashi
That reminds me, I need to look up when the X-59 flies next.
November 21, 2025 at 4:02 PM
That reminds me, I need to look up when the X-59 flies next.
November 16, 2025 at 4:47 PM
I drew a circle in Paint because I wasn't 100% sure what my eyes were telling me. He's a wide boi.
November 16, 2025 at 3:30 PM
I drew a circle in Paint because I wasn't 100% sure what my eyes were telling me. He's a wide boi.
Trying to fix a jittery function generator and uploading its manual to @archive.org as you do.
Thermal cameras are handy. That pass transistor is ~*hot*~!
#FixingThingsIsCool
Thermal cameras are handy. That pass transistor is ~*hot*~!
#FixingThingsIsCool
November 5, 2025 at 2:20 AM
Trying to fix a jittery function generator and uploading its manual to @archive.org as you do.
Thermal cameras are handy. That pass transistor is ~*hot*~!
#FixingThingsIsCool
Thermal cameras are handy. That pass transistor is ~*hot*~!
#FixingThingsIsCool
Barrel looks something like this:
November 4, 2025 at 4:51 PM
Barrel looks something like this:
Seems to work OK. It's very Japanese. Almost like if a Radio Shack Model 100 laptop had an oscilloscope cousin.
November 4, 2025 at 1:09 AM
Seems to work OK. It's very Japanese. Almost like if a Radio Shack Model 100 laptop had an oscilloscope cousin.
Today's cheapo eBay test equipment acquisition: a Leader 100P combo oscilloscope/multimeter. Looks like it was made in late 1987.
November 4, 2025 at 1:09 AM
Today's cheapo eBay test equipment acquisition: a Leader 100P combo oscilloscope/multimeter. Looks like it was made in late 1987.
Fun troubleshooting a dead channel on an old Tektronix handheld oscilloscope. The trace leading from the Sony ADC on the right to the ribbon cable is broken at the cable's pad. Fortunately, a convenient SMD capacitor provided an easy place to add a bodge wire.
#FixingStuffIsCool
#FixingStuffIsCool
October 23, 2025 at 3:03 PM
Fun troubleshooting a dead channel on an old Tektronix handheld oscilloscope. The trace leading from the Sony ADC on the right to the ribbon cable is broken at the cable's pad. Fortunately, a convenient SMD capacitor provided an easy place to add a bodge wire.
#FixingStuffIsCool
#FixingStuffIsCool
🎶🎵The only one who could clip my toenails was the son of a Tweezer Man🎵🎶
October 11, 2025 at 12:55 AM
🎶🎵The only one who could clip my toenails was the son of a Tweezer Man🎵🎶
Oh, crimony I love these machines so much. Some of my favorite shots of them are under construction. Here's one I found on aamalebourget.fr/la-navette-s... of Challenger and Enterprise hanging out in the same place.
October 5, 2025 at 2:18 PM
Oh, crimony I love these machines so much. Some of my favorite shots of them are under construction. Here's one I found on aamalebourget.fr/la-navette-s... of Challenger and Enterprise hanging out in the same place.
The #RP2040 has a Real Time Clock, so now my display has a clock. That makes a little over two dozen clocks in the house, I think.
Maybe I'll use the #picow and get the clock from the internet so it's self-setting...
@raspberrypi.com #pico
Maybe I'll use the #picow and get the clock from the internet so it's self-setting...
@raspberrypi.com #pico
October 1, 2025 at 12:29 AM
The #RP2040 has a Real Time Clock, so now my display has a clock. That makes a little over two dozen clocks in the house, I think.
Maybe I'll use the #picow and get the clock from the internet so it's self-setting...
@raspberrypi.com #pico
Maybe I'll use the #picow and get the clock from the internet so it's self-setting...
@raspberrypi.com #pico
Back on the Trilithic display.
Doesn't seem like much, but it's a major feature of interfaces. There's a lot below the surface! Initialize with zero, monitor the encoder for changes and update the display. Lookup bit patterns and OR them into the 80 bit stream.
@raspberrypi.com #pico
Doesn't seem like much, but it's a major feature of interfaces. There's a lot below the surface! Initialize with zero, monitor the encoder for changes and update the display. Lookup bit patterns and OR them into the 80 bit stream.
@raspberrypi.com #pico
September 30, 2025 at 11:00 PM
Back on the Trilithic display.
Doesn't seem like much, but it's a major feature of interfaces. There's a lot below the surface! Initialize with zero, monitor the encoder for changes and update the display. Lookup bit patterns and OR them into the 80 bit stream.
@raspberrypi.com #pico
Doesn't seem like much, but it's a major feature of interfaces. There's a lot below the surface! Initialize with zero, monitor the encoder for changes and update the display. Lookup bit patterns and OR them into the 80 bit stream.
@raspberrypi.com #pico
I used a spreadsheet to help me calculate tables for each digit and numeral so that I could put a given number in a given place more easily by ORing values into the serial data.
Was hoping to find similar tables in the original Trilithic firmware, but alas.
@raspberrypi.com #pico
Was hoping to find similar tables in the original Trilithic firmware, but alas.
@raspberrypi.com #pico
September 21, 2025 at 1:35 AM
I used a spreadsheet to help me calculate tables for each digit and numeral so that I could put a given number in a given place more easily by ORing values into the serial data.
Was hoping to find similar tables in the original Trilithic firmware, but alas.
@raspberrypi.com #pico
Was hoping to find similar tables in the original Trilithic firmware, but alas.
@raspberrypi.com #pico
Hey! Finished reverse engineering the positions of all the segments in the LCD and managed to shift in something coherent.
Rev-enging the segments was done using the rotary encoder, lighting up one at a time and noting the bit position and segment name.
@raspberrypi.com #pico
Rev-enging the segments was done using the rotary encoder, lighting up one at a time and noting the bit position and segment name.
@raspberrypi.com #pico
September 19, 2025 at 10:59 PM
Hey! Finished reverse engineering the positions of all the segments in the LCD and managed to shift in something coherent.
Rev-enging the segments was done using the rotary encoder, lighting up one at a time and noting the bit position and segment name.
@raspberrypi.com #pico
Rev-enging the segments was done using the rotary encoder, lighting up one at a time and noting the bit position and segment name.
@raspberrypi.com #pico
Taking a break from the HCMS display to reverse-engineer this Trilithic Tricorder 3 front panel. The LCD is run by an OKI MSM5265. Each segment is somewhere semi-randomly in a 160 bit register. Have to cycle through to reverse engineer the LCD. :v
@raspberrypi.com #pico
@raspberrypi.com #pico
September 19, 2025 at 12:33 AM
Taking a break from the HCMS display to reverse-engineer this Trilithic Tricorder 3 front panel. The LCD is run by an OKI MSM5265. Each segment is somewhere semi-randomly in a 160 bit register. Have to cycle through to reverse engineer the LCD. :v
@raspberrypi.com #pico
@raspberrypi.com #pico
Slow going tinkering with the HCMS-2915. Still, I have added a font and can now just toss ASCII characters at it and have them show up:
@raspberrypi.com #pico
@raspberrypi.com #pico
September 17, 2025 at 10:02 PM
Slow going tinkering with the HCMS-2915. Still, I have added a font and can now just toss ASCII characters at it and have them show up:
@raspberrypi.com #pico
@raspberrypi.com #pico
Aiwa TP-713 5" reel-to reel re-belted and mostly working. Made before 1967 and JIS as all heck.
Make sure to use #JIS screwdrivers on stuff made in Japan, kids. Typical Philips drivers will hopelessly mangle the heads.
#FixingStuffIsCool
Make sure to use #JIS screwdrivers on stuff made in Japan, kids. Typical Philips drivers will hopelessly mangle the heads.
#FixingStuffIsCool
September 14, 2025 at 10:14 PM
Aiwa TP-713 5" reel-to reel re-belted and mostly working. Made before 1967 and JIS as all heck.
Make sure to use #JIS screwdrivers on stuff made in Japan, kids. Typical Philips drivers will hopelessly mangle the heads.
#FixingStuffIsCool
Make sure to use #JIS screwdrivers on stuff made in Japan, kids. Typical Philips drivers will hopelessly mangle the heads.
#FixingStuffIsCool
He's just getting ready to rattle off some Carl Spackler quotes from Caddyshack. NBD.
September 11, 2025 at 6:48 PM
He's just getting ready to rattle off some Carl Spackler quotes from Caddyshack. NBD.
Pollfinder, under the "Precincts and Districts" heading
pollfinder.sos.mn.gov
Attached is my old address in South Minneapolis.
pollfinder.sos.mn.gov
Attached is my old address in South Minneapolis.
September 2, 2025 at 11:55 PM
Pollfinder, under the "Precincts and Districts" heading
pollfinder.sos.mn.gov
Attached is my old address in South Minneapolis.
pollfinder.sos.mn.gov
Attached is my old address in South Minneapolis.
Returning to the @raspberrypi.com #pico HCMS-2915 display project. This model is basically a 160+bit serial register, so if I want to write a 0 character I have to define a 5x7 character, then shift it in.
Rusty at C/C++, so I forgot the difference between & and && which led to some weirdness.
Rusty at C/C++, so I forgot the difference between & and && which led to some weirdness.
August 29, 2025 at 3:04 AM
Returning to the @raspberrypi.com #pico HCMS-2915 display project. This model is basically a 160+bit serial register, so if I want to write a 0 character I have to define a 5x7 character, then shift it in.
Rusty at C/C++, so I forgot the difference between & and && which led to some weirdness.
Rusty at C/C++, so I forgot the difference between & and && which led to some weirdness.
Oof, I do believe that's showing rotation near Delavan.
August 18, 2025 at 12:40 AM
Oof, I do believe that's showing rotation near Delavan.