# 勿忘之機
## 第一階段
ESP32 wifi+BT $200 [蝦皮](https://shopee.tw/%E3%80%90%E6%A8%82%E6%84%8F%E5%89%B5%E5%AE%A2%E5%AE%98%E6%96%B9%E5%BA%97%E3%80%91%E3%80%8A%E9%99%84%E7%99%BC%E7%A5%A8%E3%80%8BESP32-%E9%96%8B%E7%99%BC%E6%9D%BF-WIFI-%E8%97%8D%E7%89%99-%E7%89%A9%E8%81%AF%E7%B6%B2-ESP-WROOM-32-ESP-32S-i.139069730.2480867385?sp_atk=85fbebb9-882e-441a-99fe-7fbdd5d6574b&xptdk=85fbebb9-882e-441a-99fe-7fbdd5d6574b) [蝦皮](https://shopee.tw/%E3%80%90%E7%92%B0%E5%B3%B6%E7%A7%91%E6%8A%80%E3%80%91ESP32-C3-%E9%96%8B%E7%99%BC%E6%9D%BF-ESP32-SuperMini-%E5%8F%B0%E7%81%A3%E7%8F%BE%E8%B2%A8-%E9%96%8B%E7%99%BC%E6%9D%BFESP32-%E8%BF%B7%E4%BD%A0%E9%96%8B%E7%99%BC%E6%9D%BF-MINI%E6%9D%BF-i.280233910.24001423519?sp_atk=9e407c4b-d5f6-4902-9f3c-ce71cf312ccd&xptdk=9e407c4b-d5f6-4902-9f3c-ce71cf312ccd)
UHF R200 $1200 (已購買)
鋰電池 容量再考慮 $200 [蝦皮]()
天線 $700
充電模組 $50以下 [蝦皮](https://shopee.tw/%E7%86%B1%E9%8A%B7%E5%84%AA%E5%93%81%E2%9C%A8%E8%B6%85%E5%B0%8F%E4%B8%89%E5%85%83%E9%8B%B0%E9%9B%BB%E6%B1%A0%E5%85%85%E9%9B%BB%E6%9D%BF1A-3.7V4.2V%E5%85%85%E9%9B%BB%E5%99%A8%E6%A8%A1%E7%B5%84Type-C%E6%8E%A5%E5%8F%A3%E5%B8%B6%E4%BF%9D%E8%AD%B7%E6%9D%BF-i.238245009.24000952104?sp_atk=b02179df-24a0-44d1-ae79-5cf15dafd765&xptdk=b02179df-24a0-44d1-ae79-5cf15dafd765) [蝦皮](https://shopee.tw/%E3%80%90%E7%92%B0%E5%B3%B6%E7%A7%91%E6%8A%80%E3%80%91%E6%96%B0%E6%AC%BETP4056-1A%E9%8B%B0%E9%9B%BB%E6%B1%A0%E5%85%85%E9%9B%BB%E6%9D%BF%E6%A8%A1%E5%A1%8ATYPE-C-USB%E6%8E%A5%E5%8F%A3%E5%85%85%E9%9B%BB%E4%BF%9D%E8%AD%B7%E4%BA%8C%E5%90%88%E4%B8%80-i.280233910.6564386085?sp_atk=3b520e24-bd06-4efe-9441-832ddf56bb54&xptdk=3b520e24-bd06-4efe-9441-832ddf56bb54)
RFID Tag $50 (已購買)

測試最大距離以及數量
看天線的指向性和角度

### libraries
R200
https://github.com/playfultechnology/arduino-rfid-R200

ESP32
https://dl.espressif.com/dl/package_esp32_index.json

### flow chart

## 第二階段
縮小體積

## 第三階段
pcb layout