Lup Yuen Lee 李立源 @lupyuen@qoto.org

The Botanist Who Defied Stalin

http://m.nautil.us/issue/99/universality/the-botanist-who-defied-stalin

How we configure #WisBlock in #Arduino for #LoRaWAN

https://lupyuen.github.io/articles/wisgate?22#configure-lorawan-client

Testing #WisGate #LoRaWAN Gateway with RAKwireless #WisBlock ... In #Arduino!

https://lupyuen.github.io/articles/wisgate?21#lorawan-arduino-client

Allwinner Processor 2021-2022 Roadmap - Allwinner T827, T723 and T1033 SoC's

https://www.cnx-software.com/2021/04/29/allwinner-processor-2021-2022-roadmap-allwinner-t827-t723-and-t1033-socs/

2 things we need to configure a #LoRaWAN Device: 1️⃣ Device EUI 2️⃣ App Key ... Here's how we get them from #WisGate #ChirpStack

https://lupyuen.github.io/articles/wisgate?19#lorawan-application

Yeah #LoRaWAN EUI sounds unpleasant 😂

https://lupyuen.github.io/articles/wisgate?17#lorawan-application

Share files between #Linux and #Windows with Samba

https://opensource.com/article/21/4/share-files-linux-windows

My #WisGate #LoRaWAN Gateway receives 1,200 LoRaWAN Packets a day ... From unknown LoRaWAN Devices 😲

https://lupyuen.github.io/articles/wisgate?11#chirpstack-lorawan-stack

Setting up @RAKwireless #WisGate #LoRaWAN Gateway was quick and easy ... Here's how

https://lupyuen.github.io/articles/wisgate?10

#WisGate D4H comes with open-source #ChirpStack #LoRaWAN stack ... Preinstalled in the microSD card, ready for web and ssh access

https://lupyuen.github.io/articles/wisgate?3

#WisGate D4H #LoRaWAN Gateway is essentially a Raspberry Pi in a sturdy IP30 box

https://lupyuen.github.io/articles/wisgate?2

Everything about #RAKwireless
RAK7248 #WisGate Developer D4H #LoRaWAN Gateway ... Shall be explained here

https://lupyuen.github.io/articles/wisgate?1

Taking a short BL602 break ... To write about everything I've done with #RAKwireless #WisGate

https://docs.rakwireless.com/Product-Categories/WisGate/RAK7244C/Quickstart/

"How #Linux Works" ... 3rd Edition is out

https://nostarch.com/howlinuxworks3

Microcontroller Shortages: "What's up with NXP?"

https://www.reddit.com/r/embedded/comments/n0euc3/whats_up_with_nxp/?utm_medium=android_app&utm_source=share

#WordPress 5.7 + PHP 8: XML External Entity #Vulnerability

https://blog.sonarsource.com/wordpress-xxe-security-vulnerability

For Reference: Here's how I connected #PineCone #RISCV #BL602 @PINE64 to Pine64 RFM90 #LoRa Module (SX1262)

https://github.com/lupyuen/bl_iot_sdk/tree/master/components/3rdparty/lora-sx1262#connect-bl602-to-sx1262

But wait: Will #LoRaWAN allow replayed "Join Network" Requests? 😲 Nope it doesn't! #WisGate #ChirpStack will reject Replayed Requests because the Nonce needs to be unique ... Here's how we find Nonce Errors in RAKwireless WisGate

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#message-integrity-code-errors

Let's copy the Join #LoRaWAN Network Request generated by #BL602 ... And retransmit with #WisBlock ... Surprise: the Join Request succeeds! 😲 Which proves the Nonce and Message Integrity Code are OK ... Probably the BL602 Power Amplifier setting is wrong 🤔

https://github.com/lupyuen/bl_iot_sdk/tree/lorawan/customer_app/sdk_app_lorawan#output-log