Lup Yuen Lee 李立源 @lupyuen@qoto.org

How we handle #LoRaWAN Events ... With NimBLE Porting Layer on Apache #NuttX OS

https://lupyuen.github.io/articles/lorawan3?26#lorawan-event-loop

Real-time 3D digital map of Tokyo's Public Transport system

https://minitokyo3d.com/

Xilinx Vivado: 2022 Date Overflow Bug

https://www.reddit.com/r/FPGA/comments/rtx08x/vivado_the_gift_that_keeps_on_giving/?utm_medium=android_app&utm_source=share

"#Embedded Industry in the next 10 years?"

https://www.reddit.com/r/embedded/comments/ru4cjn/embedded_industry_in_the_next_10_years_starting/?utm_medium=android_app&utm_source=share

How we generate #LoRaWAN Nonces ... With the Strong Random Number Generator on #NuttX OS

https://lupyuen.github.io/articles/lorawan3?25#strong-random-number-generator

Here's why #LoRaWAN on #NuttX needs a Strong Random Number Generator (with Entropy Pool)

https://lupyuen.github.io/articles/lorawan3?24#lorawan-nonce

Inspecting the ChirpStack Log ... For #LoRaWAN Messages transmitted by Apache #NuttX OS

https://lupyuen.github.io/articles/lorawan3?23#check-lorawan-gateway-1

Running our #LoRaWAN Firmware on Apache #NuttX OS ... And transmitting LoRaWAN Messages

https://lupyuen.github.io/articles/lorawan3?22#rerun-the-firmware

How often can we send a #LoRaWAN Message? Check the LoRaWAN Airtime Calculator

https://lupyuen.github.io/articles/lorawan3?21#message-interval

Pine64 launches #PinePhone Keyboard case, back covers with #LoRa radio, fingerprint scanner, wireless charging

https://www.cnx-software.com/2022/01/02/pine64-launches-pinephone-keyboard-case-back-covers-with-lora-radio-fingerprint-scanner-wireless-charging/

#LoRaWAN Max Message Size depends on 1️⃣ Data Rate 2️⃣ LoRaWAN Region

https://lupyuen.github.io/articles/lorawan3?20#message-size

"What if cars could stop you from Driving Drunk? A peek at the latest tech"

https://www.npr.org/2021/12/31/1065246981/what-if-cars-could-stop-you-from-driving-drunk-a-peek-at-the-latest-tech

Housing block hit by 'stray projectile' from New Year fireworks display (Singapore)

https://www.channelnewsasia.com/singapore/hdb-block-hit-fireworks-projectile-ubi-new-year-2410346

"Dad saddled with S$ 20,000 credit card bill after daughter's in-game spending spree on Genshin Impact"

https://www.straitstimes.com/singapore/community/dad-saddled-with-20000-credit-card-bill-after-daughters-in-game-purchase-spree-on-genshin-impact

Here's how we transmit a #LoRaWAN Data Packet in our #NuttX App

https://lupyuen.github.io/articles/lorawan3?19#send-data-to-lorawan

2021 Projects

WakaTime Programming Stats 2021 🤔