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There is a new post over at the Sinclair Scientific Emulator +HACKADAY project page:

https://hackaday.io/project/91895-sinclair-scientific-calculator-emulator/log/145136-a-brief-demonstration-of-this-projects-hackability

https://hackaday.io/project/91895-sinclair-scientific-calculator-emulator/log/145136-a-brief-demonstration-of-this-projects-hackability

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Here is a short video showing how to calculate PI in the Sinclair Scientific Emulator using the arctan(1)*4 formula.

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Calculating the arccos of 0.0001 at three different speeds: slow, normal and fast.

To select the speed, hold down 1,2 or 3 when turning the calculator on. Release when 0.0000 00 is shown. Selecting a speed also keeps the display on while the calculator its computing the result.

If no key is pressed when the calculator is turned on, it defaults to the correct behavior of blanking the display when the calculator is working on an answer.

One of the quirks of this calculator is that it computed the results with less than stellar accuracy. In this case, the algorithm goes into a loop and eventually it overflows and returns the wrong answer of 0 instead of the correct 1.5706

The one on the left is on sale at +ebay

If you want to make it yours:

http://tinyurl.com/enigmashop

To select the speed, hold down 1,2 or 3 when turning the calculator on. Release when 0.0000 00 is shown. Selecting a speed also keeps the display on while the calculator its computing the result.

If no key is pressed when the calculator is turned on, it defaults to the correct behavior of blanking the display when the calculator is working on an answer.

One of the quirks of this calculator is that it computed the results with less than stellar accuracy. In this case, the algorithm goes into a loop and eventually it overflows and returns the wrong answer of 0 instead of the correct 1.5706

The one on the left is on sale at +ebay

If you want to make it yours:

http://tinyurl.com/enigmashop

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The one on the right, after it gets some standoffs, is going on +Tindie

#SinclairScientific

https://github.com/arduinoenigma/ArduinoNanoSinclairScientificCalculator

#SinclairScientific

https://github.com/arduinoenigma/ArduinoNanoSinclairScientificCalculator

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Found this article about the Arduino Enigma Machine Simulator and the External Lamp Field over at +Tindie blog

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The Enigma Machine External Lamp Field is now available at

https://www.tindie.com/products/ArduinoEnigma/lamp-field-for-the-arduino-enigma-machine/

Head over to our +Tindie store to make it yours.

https://www.tindie.com/products/ArduinoEnigma/lamp-field-for-the-arduino-enigma-machine/

Head over to our +Tindie store to make it yours.

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