From ebd9cbb039089636a665bbd7cd4d567b5dafcce0 Mon Sep 17 00:00:00 2001
From: cuu <gnubsd@me.com>
Date: Sun, 16 Mar 2025 23:45:36 +0800
Subject: [PATCH] update readme

---
 README.md | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 32355b9..085bf77 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,23 @@
-# PicoCalc   
+# PicoCalc – Open-Source Graphing Calculator
+
+**PicoCalc** is an open-source graphing calculator powered by **Raspberry Pi RP2040**, designed and developed by **ClockworkPi**. It provides a versatile platform for learning, programming, and expanding functionality through hardware and software modifications.
+
+<p align="center">
+  <img src="https://www.clockworkpi.com/assets/picocalc_banner.jpg" width="600">
+</p>
+
+---
+
+## 📌 Features
+- **RP2040-based** graphing calculator with open-source firmware.
+- **Expandable hardware** with SPI/I²C/UART for external peripherals.
+- **Support for Micropython & C/C++ development** using the Raspberry Pi Pico SDK.
+- **Customizable keypad & UI**, allowing users to modify functionalities.
+- **USB-C powered**, with optional battery support.
+- **Compatible with 3D-printed cases**, making it an ideal DIY project.
+
+---
+