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2.4k 27 6 38
An ARM based scientific calculator
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Scientific Calculator

Ramón Calvo

4.8k 1.3k 2 35
An Enigma Machine Simulator was created with an Arduino UNO and a Touchscreen LCD. Simulates Enigma I, M3, M4, the Plugboard and Uhr Switch.
1.9k 58 3 33
A pocket-sized KIM-1 replica with added '6502 programmable calculator mode'. Parts cost is about $10.
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KIM Uno: A simple KIM-1 replica

Oscarv

4.4k 23 0 26
A programmable RPN calculator using way too many Nixie tubes
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RPN Nixie Calculator

robert.c.baruch

4k 136 10 24
Control DMX equipment, such as lights, from a TI-84
3.8k 36 2 19
Finally you can do math in the dark.
Project Owner Contributor

TI-84+ SE Backlight

Tyler Anderson

2.2k 175 5 18
CalcHack is a project to add missing features to graphic calculators. It adds many exciting functions students wanted for a long time.
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CalcHack

Sean Dylan Goff

1.5k 19 0 18
NP-41 is a hardware realization of the Nonpariel calculator simulator. It executes the original HP-41C / CV byte-codes.
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NP-41 RPN Calculator

Chris Chung

758 11 2 14
Handmade retro taking calculator with QDSP6064 bubble display
1.6k 10 0 11
An RPN based scientific calculator with four line display based on the MSP430 microcontroller.
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RPN Scientific Calculator

Joey Shepard

937 14 0 9
TI-86 calculator replica based on STM32F407
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TI-86 replica

hynek

534 16 0 9
A graphing calculator based on a modern 65C02 microprocessor.
Project Owner Contributor

6502 Graphing Calculator

Joey Shepard

290 5 1 7
The AriCalculator is a DIY calculator or a general purpose handheld device.
788 11 4 6
Homebrew scientific/graphing calculator
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ArithMax

Wenting Z.

434 5 4 6
Stretching the limits of Arduino with an Arduino Duemilanove Graphing Calculator.
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BluCalc

Blue Okiris

418 115 4 5
49-key mini keypad
Project Owner Contributor

Keypad

alan_r_cam

787 23 4 3
I found the front case/keypad of an HP-21 in electronics recycling a while ago. I'm going to try to get it working again with Trinket guts.
349 6 0 3
An RPN scientific calculator with keystroke programming based on the LPC1114 microcontroller.
Project Owner Contributor

Programmable RPN Calculator

Joey Shepard