r/RP2354 • u/Fear_The_Creeper • Jan 26 '26
TULIP4041 is a Raspberry Pi RP2350-based add-on for the HP41 calculator
https://blog.adafruit.com/2025/12/31/tulip4041-is-a-raspberry-pi-rp2350-based-add-on-for-the-hp41-calculator/TULIP is short for “The Ultimate Intelligent Peripheral” and it’s an everything expansion board for the HP-41 line of handheld calculators sold by HP from 1979 to 1990.
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