v01d ma1n()
@v01dma1n.bsky.social
Vintage electronics, contraptions, Python, data, ESP32, mobile robots, ROS and so on...
And the main reason why we are here: the LED display but with no bubble lenses: just flat.
November 13, 2025 at 8:54 PM
And the main reason why we are here: the LED display but with no bubble lenses: just flat.
The TI chip sits in some exotic "socket". I have never seen it before!
November 13, 2025 at 8:52 PM
The TI chip sits in some exotic "socket". I have never seen it before!
To open or not to open: not a question!
November 13, 2025 at 8:50 PM
To open or not to open: not a question!
Unfortunately, the calculator does not read the keyboard anymore but displays a cute zero.
November 13, 2025 at 8:47 PM
Unfortunately, the calculator does not read the keyboard anymore but displays a cute zero.
Initially, I thought "3 Volts only?" It turns out that this calculator was powered by AA or AAA batteries. Those were two 3V batteries for total of 6V.
November 13, 2025 at 8:45 PM
Initially, I thought "3 Volts only?" It turns out that this calculator was powered by AA or AAA batteries. Those were two 3V batteries for total of 6V.
Today's thrift shop find: Commodore Minuteman 3 ca. 1973.
How tiny this thing is! (see AAA batteries)
Finally term "minuteman" has a different meaning from ICBM.
"A 'minuteman' (hist) refers to a member of a colonial militia who was ready to fight at a minute's notice, especially during the Am Rev"
How tiny this thing is! (see AAA batteries)
Finally term "minuteman" has a different meaning from ICBM.
"A 'minuteman' (hist) refers to a member of a colonial militia who was ready to fight at a minute's notice, especially during the Am Rev"
November 13, 2025 at 8:43 PM
Today's thrift shop find: Commodore Minuteman 3 ca. 1973.
How tiny this thing is! (see AAA batteries)
Finally term "minuteman" has a different meaning from ICBM.
"A 'minuteman' (hist) refers to a member of a colonial militia who was ready to fight at a minute's notice, especially during the Am Rev"
How tiny this thing is! (see AAA batteries)
Finally term "minuteman" has a different meaning from ICBM.
"A 'minuteman' (hist) refers to a member of a colonial militia who was ready to fight at a minute's notice, especially during the Am Rev"
Krompelka surprised that the batch job is finished.
November 4, 2025 at 1:16 AM
Krompelka surprised that the batch job is finished.
we have those, right?
for ESP32 this should not be a problem
for ESP32 this should not be a problem
November 1, 2025 at 4:55 PM
we have those, right?
for ESP32 this should not be a problem
for ESP32 this should not be a problem
Sensor closeup. Two openinigs for laser beam.
November 1, 2025 at 4:13 PM
Sensor closeup. Two openinigs for laser beam.
Fake Geiger counter but it looks convincing with my coffee cup! Can you see the sensor?
November 1, 2025 at 1:04 AM
Fake Geiger counter but it looks convincing with my coffee cup! Can you see the sensor?
Temporal Anomaly Clock.
The clock shows time with its local anomalies.
The sensitivity is set to 5 but "it goes up to 11".
I did not dare go set it that high.
#esp32 #vfd #esp32ntpclock
The clock shows time with its local anomalies.
The sensitivity is set to 5 but "it goes up to 11".
I did not dare go set it that high.
#esp32 #vfd #esp32ntpclock
October 24, 2025 at 6:02 PM
Temporal Anomaly Clock.
The clock shows time with its local anomalies.
The sensitivity is set to 5 but "it goes up to 11".
I did not dare go set it that high.
#esp32 #vfd #esp32ntpclock
The clock shows time with its local anomalies.
The sensitivity is set to 5 but "it goes up to 11".
I did not dare go set it that high.
#esp32 #vfd #esp32ntpclock
Tesla's "Full Self-Driving Supervised" expansion is back firing as it exposes its shortcomings"
October 21, 2025 at 2:10 AM
Tesla's "Full Self-Driving Supervised" expansion is back firing as it exposes its shortcomings"
While 65536 makes sense to me, 2^32 (4294967296) is beyond my consciousness. I do not recognize this number.
October 21, 2025 at 2:03 AM
While 65536 makes sense to me, 2^32 (4294967296) is beyond my consciousness. I do not recognize this number.
And I forgot to show you my cards...
September 5, 2025 at 12:17 PM
And I forgot to show you my cards...
Matrix... you can do only so much with 7 segments.
September 5, 2025 at 1:47 AM
Matrix... you can do only so much with 7 segments.
Here are two animations revealing time: SlotMachine and Matrix. Both of them require some fine tuning but I am not sure which one to pick.
September 5, 2025 at 1:46 AM
Here are two animations revealing time: SlotMachine and Matrix. Both of them require some fine tuning but I am not sure which one to pick.
I ordered 20 of those connectors and received 280. I am trying to imagine how this might have happened.
1. Disgruntled employee packed the content of the entire bin.
2. One picker instead of taking one pack from a bin took entire bag and went for a lunch. Another one put the whole bag into a box..
1. Disgruntled employee packed the content of the entire bin.
2. One picker instead of taking one pack from a bin took entire bag and went for a lunch. Another one put the whole bag into a box..
September 3, 2025 at 1:03 AM
I ordered 20 of those connectors and received 280. I am trying to imagine how this might have happened.
1. Disgruntled employee packed the content of the entire bin.
2. One picker instead of taking one pack from a bin took entire bag and went for a lunch. Another one put the whole bag into a box..
1. Disgruntled employee packed the content of the entire bin.
2. One picker instead of taking one pack from a bin took entire bag and went for a lunch. Another one put the whole bag into a box..
Yes, I got them from a thrift store for pennies. Thanks to your question, I found one that is more affordable 😃
September 2, 2025 at 1:44 PM
Yes, I got them from a thrift store for pennies. Thanks to your question, I found one that is more affordable 😃
Now we are talking!
After my manual initial test, Gemini "suggested" code with Adafriut LEDBackpack library, but the code did not work as the library 7segment class assumes only 4 digit display with a colon in the middle. It ended up generating more generic logick.
After my manual initial test, Gemini "suggested" code with Adafriut LEDBackpack library, but the code did not work as the library 7segment class assumes only 4 digit display with a colon in the middle. It ended up generating more generic logick.
September 1, 2025 at 7:30 PM
Now we are talking!
After my manual initial test, Gemini "suggested" code with Adafriut LEDBackpack library, but the code did not work as the library 7segment class assumes only 4 digit display with a colon in the middle. It ended up generating more generic logick.
After my manual initial test, Gemini "suggested" code with Adafriut LEDBackpack library, but the code did not work as the library 7segment class assumes only 4 digit display with a colon in the middle. It ended up generating more generic logick.
I am in love with 1970s calculator bubble LED displays. Cuteness overload!
I am using HT16K33A breakout board because it is a damn common anode display.
I will add an RTC this time, but this will require a level shifter.
#esp32
I am using HT16K33A breakout board because it is a damn common anode display.
I will add an RTC this time, but this will require a level shifter.
#esp32
August 30, 2025 at 7:00 PM
I am in love with 1970s calculator bubble LED displays. Cuteness overload!
I am using HT16K33A breakout board because it is a damn common anode display.
I will add an RTC this time, but this will require a level shifter.
#esp32
I am using HT16K33A breakout board because it is a damn common anode display.
I will add an RTC this time, but this will require a level shifter.
#esp32
Based on images of other devices, unlikely. Could have been pretty 😍
www.vintagebritishcalculators.info/assets/image...
www.vintagebritishcalculators.info/assets/image...
August 18, 2025 at 3:34 PM
Based on images of other devices, unlikely. Could have been pretty 😍
www.vintagebritishcalculators.info/assets/image...
www.vintagebritishcalculators.info/assets/image...
Posting the most beautiful rat picture from 1990s. I do not have an electronic copy of the original - just its imperfect printout scan
August 17, 2025 at 1:14 AM
Posting the most beautiful rat picture from 1990s. I do not have an electronic copy of the original - just its imperfect printout scan
"The designers managed to get the IC count down to just 29." No wonder that it does not have leading zero suppression.
Image credit:
madrona.ca/e/eec/calcs/....
Image credit:
madrona.ca/e/eec/calcs/....
August 16, 2025 at 11:06 AM
"The designers managed to get the IC count down to just 29." No wonder that it does not have leading zero suppression.
Image credit:
madrona.ca/e/eec/calcs/....
Image credit:
madrona.ca/e/eec/calcs/....
The keys produce this very satisfying click.
August 16, 2025 at 10:33 AM
The keys produce this very satisfying click.