Lightnews — Scholar-powered news

i4cy 📌 @i4cy.com · May 19

https://i4cy.com/pi/ - Happy Pi Day! #PiDay http://i4cy.com/pi/
https://twitter.com/i4cy_/status/1635690327049744403

[14/03/2024]

i4cy 📌 @i4cy.com · May 19

Know your colour code! #electronics
[02/03/2024]

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i4cy 📌 @i4cy.com · May 19

I did try “ringing” the Addmaster 01 Hotline number – but strangely no one answered. So I repaired and restored this vintage 1972 Addmaster calculator myself. It uses an early gas discharge “Panaplex” orange display. #VintageElectronics #VintageCalculator #Panaplex
[05/10/2023]

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i4cy 📌 @i4cy.com · May 19

I'm displaying 3D mesh shapes in this C# app on this repaired/restored #VectorScope from the 1970s. Combining new and old - a match in electronic heaven. #3Dgraphics #programming #electronics
[16/08/2023]

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i4cy 📌 @i4cy.com · May 19

Transistor checking using the 1970s made, and the more recent homemade. Can you guess which one is newer?
#Tridendifier #TT144 #Electronics #NPN #PNP
[29/06/2023]

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i4cy 📌 @i4cy.com · May 19

Great for testing rebranded #Z80 chips from China.
[05/06/2023]

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i4cy 📌 @i4cy.com · May 19

Did I watch the FCukup this weekend? Of course not! Instead, being an uber-geek I built this Z80-MBC2 board and revisited the groovy 70s computing era. Definitely a nostalgic trip down computer memory lane.
#100DaysOfCode #z80mbc2 #RetroComputing #cpm #digitalResearch
[05/06/2023]

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i4cy 📌 @i4cy.com · May 19

https://www.i4cy.com/sinclair/
C Programming on #Sinclair ZX Machines - Generating a Mandelbrot fractal in C for the #ZX80, #ZX81 and ZX #Spectrum vintage computers with #Z88DK.

#100DaysOfCode #RetroComputing #Programminghttps://www.i4cy.com/sinclair/

[11/05/2023]

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i4cy 📌 @i4cy.com · May 19

Just repaired and restored this 1973 Sinclair Cambridge Type-2 vintage calculator. It uses a TMS0801NC calculator chip by Texas Instruments which requires -10V and -15V supplies since it is a PMOS device.

#Sinclair #SinclairCambridge #SirCliveSinclair #RetroComputing
[21/03/2023]

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i4cy 📌 @i4cy.com · May 19

Forget #ChatGPT and Python! Back in 1993 we used C++, 5¼ floppy disks, and a lot of blood, sweat & tears to train a neural network. https://www.i4cy.com/xor_nn/ https://www.i4cy.com/xor_nn/

[16/03/2023]

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i4cy 📌 @i4cy.com · May 19

Today 14th March is National π Day. Learn how to calculate π to a million decimal places from the comfort of your own browser.
#π #PiDay #MeetPi

https://www.i4cy.com/pi/ https://www.i4cy.com/pi/

[14/03/2023]

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i4cy 📌 @i4cy.com · May 19

Comparing the computing performance of the PIC microntroller series. #whetstone #dhrystone #pic10 #pic12 #pic16 #pic18 #pic24 #pic32

https://www.i4cy.com/pic_benchmark/https://www.i4cy.com/pic_benchmark/

[13/03/2023]

i4cy 📌 @i4cy.com · May 19

Flashed a few more ICs for the Digital ESR Meter.
#Electronics #ESR #TestEquipment #TestGear

https://www.i4cy.com/m0oox/esrmeter/ https://www.i4cy.com/m0oox/esrmeter/

[08/03/2023]

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i4cy 📌 @i4cy.com · May 19

The Bailey Borwein Plouffe (BBP) algorithm for calculating π was discovered by Simon Plouffe in 1995. Check out https://www.i4cy.com/pi/ to see how well it performs.
#pi #bbp #algorithm #coding #javascript https://www.i4cy.com/pi/

[08/02/2023]

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i4cy 📌 @i4cy.com · May 19

These lovely ladies certainly convinced me to buy a #vidor #battery.
[08/02/2023]

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i4cy 📌 @i4cy.com · May 19

Finally go around to having a go programming this smart TTGO T-Watch using PlatformIO and C++. My code does nothing fancy, just a simple watch designed to prolong battery power and synchronised using an NTP server.

#lilygo #TTGO #TWATCH #PlatformIO #ESP32
[29/01/2023]

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i4cy 📌 @i4cy.com · May 19

Running a few simple AWK programs on my PIC32-Unix-Box for performance benchmarking purposes.
https://i4cy.com/unix_pic32/

#unix #awk #briankernighan #pic32mz #microchip http://i4cy.com/unix_pic32/

[18/01/2023]

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i4cy 📌 @i4cy.com · May 19

Every year on February 7th, E-DAY celebrates the mathematical constant e, which is also called Euler’s Number. So I’m getting ready by writing a new techblog.

https://www.i4cy.com/euler/

#EulerDay #Euler #EulersNumber #Mathematics #Maths #DataScience #JavaScripthttps://www.i4cy.com/euler/

[05/01/

i4cy 📌 @i4cy.com · May 19

The media are touting that #WorldPopulation will hit 8 billion on the 15th November 2022. However according to my calculations that milestone already happened last week. #8Billionpeople #8billion #overpopulation

https://www.i4cy.com/global_population/ https://www.i4cy.com/global_population/

[07/11

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i4cy 📌 @i4cy.com · May 19

Running a neural network classifier model on a microcontroller to solve the XOR problem.
#NeuralNetwork #MachineLearning #ArtificialIntelligence #esp32
https://www.i4cy.com/xor_nn/ https://www.i4cy.com/xor_nn/

[28/09/2022]

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i4cy 📌 @i4cy.com · May 19

My Lottery Simulator, helps you win the next Lotto jackpot. https://www.i4cy.com/lotto/

#Lotto #UKLotto https://www.i4cy.com/lotto

[25/08/2022]

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i4cy 📌 @i4cy.com · May 19

Outrageous #scorchio record temperatures here in West London, UK at the moment. I’m measuring a temperature 41°C outdoors in the shade, using my trusted calibrated Platinum Resistance Thermometer (PRT).

#heatwaveuk #UKHeatwave #heatwave, #heatwave2022 #ClimateEmergency
[19/07/2022]

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i4cy 📌 @i4cy.com · May 19

One amplifier and anti-aliasing filter immortalised in paxolin for evermore. Paired with a low cost ESP32-WROOM low-power SoC microcontroller with Bluetooth and Wi-Fi.

#electronics #esp32 #opamp #paxolin
[10/06/2022]

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i4cy 📌 @i4cy.com · May 19

I am using LTspice a free tool, to generate a Bode plot showing the frequency response of a circuit under development. The circuit contains an amplifier and anti-aliasing filter to condition an audio signal prior to digitization by an ADC.

#electronics #ltspice #opamp #bodeplot
[23/05/2022]

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i4cy 📌 @i4cy.com · May 19

I’ve repaired and restored this lovely Gakken MY KIT 150 educational toy, made in Japan between the mid-60s and early-70s. I really-really-really wanted one of these as a kid - I now have one, though a little late.

#gakken #teachingaid #stemeducation #electronickit #learning
[16/05/2022]

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