Other RP2040 boards • Schematic Review, 1rst in KiCad, RP2040 Calculator Project

When I was 8 years old, I saw my dad fix a calculator. I have been tearing things apart and fixing things ever since.

I decided to jump into KiCad to design my own PCB, and figured a calculator would be a fitting project. I also need a new calculator.

The RP2040 seemed like a great choice, I have tinkered with a Raspberry Pi on a few occasions.

This is my first attempt at creating a schematic in KiCad and using an RP2040. I have a decent amount of experience reading schematics and troubleshooting electrical issues using schematics, but I have never created one.

Project Summary:

An 8-digit calculator with a small battery charges and programs via USB-C. I will be 3d printing the outer case and buttons.

I have attached a PNG of what I have so far, hopefully it's viewable!

- Please take a look and let me know if you see any red flags.
-What additional info would be helpful to provide?


I will be working on the PCB layout next; all components are SMD.

Parts List:
- Batt: LiPo 3.7V 500mAh
- RP2040
- USB_C_Receptacle_USB2.0_16P
- 7-segment LEDs XL-SA3191SRWC
- Push buttons JLC# C509415
- TP4056 Charge IC
- W25Q128JVS Flash
- LDO XC6206P332MR-G JLC C5446
- TM1650 LED Drivers
- Crystal ABM8-272-T3

Statistics: Posted by Chael_ — Wed May 13, 2026 9:40 pm

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