Lup Yuen Lee 李立源 @lupyuen@qoto.org

Shorter Antenna for Higher Frequency ... Because Antenna Length is Wavelength divided by 4

https://www.thethingsnetwork.org/forum/t/antenna-length-for-868-and-433-mhz/5378

Allwinner D1 #Linux #RISCV single-board computer

https://www.cnx-software.com/2021/04/13/allwinner-d1-linux-risc-v-sbc-processor/

Straight vs Coiled #LoRa Antenna ... It's the Antenna Length that matters

https://www.thethingsnetwork.org/forum/t/antenna-length-for-868-and-433-mhz/5378

The new #LoRa Module @PINE64 is based on Semtech SX1262 ... Here's the Reference Implementation of the SX1262 Driver

https://github.com/Lora-net/LoRaMac-node/tree/master/src/radio/sx126x

Pins on one edge of the #Pine64 #LoRa Module are replicated ... So it's actually Breadboard-Friendly

Soldering the springy #LoRa Module @PINE64

https://youtu.be/cJ0wpANpbyc

#LoRa Module @PINE64 with the funny PCB Trace behind ... Took me all night to figure out why 😂

https://youtu.be/cJ0wpANpbyc

Yep it's the @PINE64 #LoRa Gateway!

https://youtu.be/cJ0wpANpbyc

#RISCV Extensions offer "substantial energy savings" for #LoRa Preamble Detection and Bluetooth Low Energy

https://www.hackster.io/news/risc-v-extension-boasts-dramatic-improvements-in-ultra-low-power-iot-wireless-signal-processing-b54b9fd5ce27

Reference Implementation of Semtech #LoRaWAN Stack is here ... Includes drivers for SX1262 and SX1276

https://github.com/Lora-net/LoRaMac-node

"Comparison of #LoRa vs #ZigBee"

https://www.reddit.com/r/homeautomation/comments/mp62qv/comparison_of_the_advantages_and_disadvantages_of/?utm_medium=android_app&utm_source=share

"how recent experiences have further developed my understanding of the open source game, and how that relates to the future of Zig"

https://kristoff.it/blog/the-open-source-game/

"Can I start learning #Embedded with an #Arduino"

https://www.reddit.com/r/embedded/comments/mpdk5z/another_can_i_start_learning_embedded_with_an/?utm_medium=android_app&utm_source=share

Mystery Box ... Exciting!

APKPure is not safe, distributes Trojans

https://www.kaspersky.com/blog/infected-apkpure/39273/

#Microsoft buys AI speech tech company #Nuance for $19.7 billion

https://www.theverge.com/2021/4/12/22379414/microsoft-buys-nuance-ai-speech-tech

Add the "c_cpp_properties.json" file to #VSCode ... So that our #BL602 #LoRaWAN Build Errors are highlighted

https://github.com/lupyuen/bl_iot_sdk/blob/lorawan/.vscode/c_cpp_properties.json

Using this simpler Windows CMD script to build the #BL602 #LoRaWAN Driver ... Quicker for fixing build errors

https://github.com/lupyuen/bl_iot_sdk/blob/lorawan/customer_app/sdk_app_lorawan/run.cmd