手可摘棉花

Open source calculator CG-35, RPN calculator similar to HP-35

Overview

The CG-35 is a CircuitPython-powered HP-35-like RPN calculator for the Adafruit ESP32-S3 Feather and 3.5" TFT FeatherWing display with capacitive touch. The calculator consists of a 10-digit LED display with 20-digit precision for internal calculations. The graphical layout of the calculator is designed to mimic the aspect ratio of the original calculator. Due to the relatively small size of the buttons, the accuracy of the touchscreen is very important, requiring the use of a capacitive touchscreen rather than a resistive one.

Design Files

CG-35_Calculator-main

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Update:2024-11-14 04:07:28

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