From eb11316dd1754fc6f52a725c31a539f06897d7d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=8D=E5=90=83=E6=B2=B9=E7=82=B8=E9=B8=A1?=
<1425962791@qq.com>
Date: Sat, 21 Feb 2026 18:35:45 +0800
Subject: [PATCH] update readme
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**Power-Pico** 不仅仅是一个 USB 电流表。它是专为嵌入式开发者设计的**高精度低功耗分析工具**。针对传统电流表在 $\mu A$ 级别测量时的物理局限性，Power-Pico 采用了创新的**多档位自动切换采样**设计，实现了从 $1\mu A$ 到 $5A$ 的全量程覆盖。
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### ✨ 核心特性
- **uA 级高精度**：采用 INA190 零漂移放大器，配合三档电阻分段采样。
- **协议诱骗**：支持 PD2.0 PPS 协议诱骗，最高支持 20V/5A 诱骗输出。
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**Power-Pico** is more than just a USB ammeter. It is a **high-precision, low-power analysis tool** designed specifically for embedded developers. To overcome the physical limitations of traditional ammeters in the μA-level measurement, Power-Pico adopts an innovative **multi-range auto-switching sampling** design, achieving full-range coverage from $1\mu A$ to $5A$.
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### ✨ Core Features
- **μA-Level High Precision**: Utilizes the INA190 zero-drift amplifier with three-resistor segmented sampling.
- **Protocol Trigger**: Supports PD2.0 PPS protocol triggering, with up to 20V/5A output.