Pi retrofitted 1990s Brick phone Making Calls in public

I retrofitted a 1990s 1G brick style cell phone using a Raspberry Pi Pico microcontroller and a bunch of supporting parts. (see below) Once the phone was in working condition, I took it out in public to see if anyone would notice this retro tech work of art. See their reactions and learn how I rebuilt this phone.

Parts list:
Raspberry Pi Pico 2 microcontroller
6mm tactile button switches
1.3" 240x240 TFT LCD Display - ST7789
Adafruit ADG729 Dual 1-to-4 Analog Matrix Switch x2
BM10 Wireless Dialer/Mini Phone
Lithium Ion Battery - 3.7v 2200mAh

More project tech info on GitHub: https://github.com/alanb128/brick-phone

0:00 Phone in public
1:35 Quick facts
3:14 Inside the brick phone
6:00 The dialer
7:46 The diagram

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