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An ARM based scientific calculator
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Scientific Calculator

Ramón Calvo

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5.2k
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1.4k
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2
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An Enigma Machine Simulator was created with an Arduino UNO and a Touchscreen LCD. Simulates Enigma I, M3, M4, the Plugboard and Uhr Switch.
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A pocket-sized KIM-1 replica with added '6502 programmable calculator mode'. Parts cost is about $10.
Project Owner Contributor

KIM Uno: A simple KIM-1 replica

Oscarv

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4.8k
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25
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27
A programmable RPN calculator using way too many Nixie tubes
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RPN Nixie Calculator

robert.c.baruch

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4.1k
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137
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Control DMX equipment, such as lights, from a TI-84
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1.7k
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22
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NP-41 is a hardware realization of the Nonpariel calculator simulator. It executes the original HP-41C / CV byte-codes.
Project Owner Contributor

NP-41 RPN Calculator

Chris Chung

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4k
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37
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Finally you can do math in the dark.
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TI-84+ SE Backlight

Tyler Anderson

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2.2k
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176
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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

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14
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Handmade retro taking calculator with QDSP6064 bubble display
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1.8k
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10
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An RPN based scientific calculator with four line display based on the MSP430 microcontroller.
Project Owner Contributor

RPN Scientific Calculator

Joey Shepard

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620
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17
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A graphing calculator based on a modern 65C02 microprocessor.
Project Owner Contributor

6502 Graphing Calculator

Joey Shepard

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1k
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15
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TI-86 calculator replica based on STM32F407
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TI-86 replica

hynek

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366
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The AriCalculator is a DIY calculator or a general purpose handheld device.
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892
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Homebrew scientific/graphing calculator
Project Owner Contributor

ArithMax

Wenting Z.

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466
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5
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Stretching the limits of Arduino with an Arduino Duemilanove Graphing Calculator.
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BluCalc

Blue Okiris

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467
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114
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49-key mini keypad
Project Owner Contributor

Keypad

alan_r_cam

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383
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6
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An RPN scientific calculator with keystroke programming based on the LPC1114 microcontroller.
Project Owner Contributor

Programmable RPN Calculator

Joey Shepard

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840
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23
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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.