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LoRa-ESP32-Pager

This is a ESP-32 and SX1262 based pager, It contains full battery charging and management as well as an input keypad and encoder. It uses a 0.96" Oled (SSD1306). There isn't any case because I wanted it to be a PCB only handheld (like the sprig), but I may laser cut a back when I get access to a laser cutter again (2 months). The firmware is based on meshatastic, and hopefully will be able to use other meshtastic nodes to forward/mesh messages.s.

I decided to build this because I felt like me and my friend group were too dependant on our phones, so I wanted to make a way to communicate that didn't involve phones. Also hopefully will be able to fully replace phones at school, which is aligned with my school possibly banning phones this upcoming year. The other main reason I wanted to start this project is because I wanted to learn more about radio and LoRa technology. This was also my first experience building my own PCBs, so I chose this over other projects because It would allow me to work with them.

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Name Use Qty Total Price Link
Oled Screen Screen 5 $9.80 https://www.aliexpress.us/item/3256808552064563.html
Battery Battery 5 $23 https://www.aliexpress.us/item/3256808031709894.html
Ra-01SH LoRa 5 16.9 https://www.aliexpress.us/item/3256802374880132.html
MCP73871-2CCI/ML Battery Management 5 8.7 https://www.aliexpress.us/item/3256809154370435.html
ESP32-S3-WROOM-1 ESP32 5 20.6 https://www.aliexpress.us/item/3256808569536766.html
TPS63001DRCR 5v to 3v3 5 5.17 https://www.aliexpress.us/item/3256806783602774.html (63001)
EC11E1834403 Rotary Encoder 5 4.14 https://www.aliexpress.us/item/2251832760130101.html
TYPE-C 16PIN 2MD(073) Usb Plug 5 2.69 https://www.aliexpress.us/item/3256805314003507.html
All Resistors R100Ω 4.74 https://www.aliexpress.us/item/3256806810055728.html (Buy 2-3)
Inductor 0805 2.2uH Inductor for TPS63 5 1.45 https://www.aliexpress.us/item/3256802926211468.html (2.2uH)
Leds Battery Charge Leds 10 3.6 https://www.aliexpress.us/item/2251832152971926.html
Diode 1N5819W Diode for Usb Power 5 0.23 https://www.digikey.com/en/products/detail/tdk-corporation/MLP2012H2R2MT0S1/4327857
Ph2.0 Battery Connector Battery Charger 5 1.45 https://www.aliexpress.us/item/3256807255498839.html
PTS815SJM250SMTRLFS Reset and Boot Button 10 1.15 https://www.digikey.com/en/products/detail/c-k/PTS815SJM250SMTRLFS/9947846
6x6 Tact Switch Keypad Buttons 3 1.29 https://www.aliexpress.us/item/3256802301084670.html
Capacitor Set Decoupling 1 8.2 https://www.aliexpress.us/item/3256807290577536.html (Buy 2-3)
Diode LESD ESD protection diodes 3 3.34 https://www.aliexpress.us/item/3256806903277344.html
Antenna Ra-01SH antenna 5 8.44 https://www.aliexpress.us/item/3256805050972049.html
PCB PCBs 5 5
Ali Express Shipping 27
PCB Way Shipping 15
Digikey Shipping 7
$178.89

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