Goodbye Octopus, Hello Ardupus

A breath of new life for a classic piece of test gear.
The “Octopus” morphs into the ARDUPUS

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Dispensing with the oscilloscope, ac power supply, and all those wires, the Ardupus does all that the Octopus did, and more.
Freestanding, easy to build, and with more features than your old Octopus, the Ardupus breathes new life into this timeless piece of test equipment.
Presented here in several forms, the choicest being the dual window version, giving side by side signatures of componetry. All electronics sit on a shield between Arduino and display.
Simpler, Mega based versions are included, and offer a basic Ardupus, but still a vast improvement on the old ac powered Octopus.
Full construction notes, circuit, software,and simulations are on an accompanying pdf at, on my Arduino page. This project will not disappoint.

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peter ward wrote 07/21/2023 at 02:34 point


320x480 TFT currently at

Other TFT is as as previously  noted on 3/5/2017

Full build instructions per PDF download at my website,, on the Arduino page.

If you cannot find the 240x320 TFTs, then you will have to re-code display to suit what you can currently buy.

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Miguel wrote 07/21/2023 at 09:11 point

Muchas gracias por su respuesta, buscare el display que me dice y en caso de no encontrarlo, buscare uno que tenga esa resolución y a probar si va.

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Miguel wrote 07/20/2023 at 19:00 point

Muy buen proyecto, me podia decir un display equivalente al que usted puso? A ser posible para las dos resoluciones.

Un saludo ......... Miguel

Desde Salamanca España

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peter ward wrote 03/05/2017 at 01:39 point

1. "ARDUPUS_320x240_MEGA_Rev0" and  Rev00 versions
Tinxiworld no longer has a listing for the 320x480 I used.
However, this appears to be identical:-
It uses a different driver to the original, ILI9481 which is not listed in my code.

2. "ARDUPUS" 320x240 MEGA Rev1", Rev2, and Rev3   codes use a 240 x 320 marked "M3208A"  atop of a  "LCD Mega Shield V1.0"
Driver is UTFT    myGLCD(SSD1289_8, 38, 39, 40, 41), as uncommented in code.

You should be able to adapt any suitable display for these versions.

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PROFESOR wrote 03/04/2017 at 19:59 point

What is the lcd display code or number.????

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xt1541xt1541xd1541 wrote 02/27/2017 at 22:41 point

nice work keep on the good work ! 

From morocco

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mkpael wrote 12/26/2016 at 17:32 point

good project!

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