Lup Yuen Lee 李立源 @lupyuen@qoto.org

#GitHub Reacts to Growing #Cryptocurrency Mining Attacks Using GitHub Actions

https://www.infoq.com/news/2021/04/GitHub-actions-cryptomining/

"Will #Linux Phones stay around this time?"

https://linmob.net/will-linux-phones-stay-around-this-time/

#LoRaWAN soil moisture solar device using #Helium network

https://www.disk91.com/2021/projects/iot/lorawan-soil-moisture-solar-device-using-helium/

"During the process of reverse engineering the #NXP LPC55S69 ROM we discovered an undocumented hardware block intended to allow NXP to fix bugs discovered in the ROM by applying patches from on-device flash"

https://oxide.computer/blog/lpc55/

"Apple AirTags could enable domestic abuse in terrifying ways"

https://www.fastcompany.com/90630404/apple-airtags-could-enable-domestic-abuse-in-terrifying-ways

Right To Repair: "It's your device, you should be able to repair it"

https://www.bbc.com/news/business-56799069

"Chasing Utopias: Chemsex as Liberation in Gay Singapore"

https://www.academia.sg/seminar-series-2021/tan-chemsex/

#BL602 transmits a packet to #LoRaWAN Gateway and receives the response ... Why is BL602 transmitting at Lower Power, when the Power Amplifier is enabled? 🤔

https://github.com/lupyuen/bl_iot_sdk/blob/lorawan/customer_app/sdk_app_lorawan/README.md#output-log

#BL602 joins the #LoRaWAN Network ... And transmits a data packet

https://youtu.be/BMMIIiZG6G0

#LoRa Concentrator Doc made me wonder ... Could our #LoRaWAN Gateway be dropping packets from #BL602 because we sent the wrong Sync Word? Yep indeed!

https://github.com/Lora-net/sx1302_hal/tree/master/libloragw#61-spreading-factor-sf5--sf6

Here are the tested #LoRaWAN Commands for #BL602 to transmit data packets correctly to the WisGate ChirpStack LoRaWAN Gateway 🎉

https://github.com/lupyuen/bl_iot_sdk/blob/lorawan/customer_app/sdk_app_lorawan/README.md#lorawan-commands

We should always select "Public LoRa Network" (instead of Private) ... So that our #BL602 #LoRaWAN Driver will transmit Public Sync Word 0x3444 (instead of 0x1424) ... Duh! 🙄

https://github.com/lupyuen/bl_iot_sdk/blob/lorawan/customer_app/sdk_app_lorawan/Makefile#L66-L69

#WisGate #LoRaWAN Gateway receives LoRaWAN Data Packet from #BL602 yay! 🎉

https://github.com/lupyuen/bl_iot_sdk/blob/lorawan/customer_app/sdk_app_lorawan/README.md#output-log

Here's how we set up our own #LoRaWAN Network with RAKwireless RAK7248 #WisGate Developer D4H Gateway... And test it with RAKwireless #WisBlock in #Arduino

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

Tencent, ByteDance and others ordered by China to curb financial busineses

https://www.cnn.com/2021/04/30/tech/china-tech-crackdown-finance-intl-hnk/index.html

Antmicro ARVSOM offers StarFive #RISCV processor, Raspberry Pi CM4 compatibility

https://www.cnx-software.com/2021/04/30/antmicro-arvsom-offers-starfive-71x0-risc-v-processor-raspberry-pi-cm4-compatibility/

Genode on Pine-A64-LTS: One Platform driver to rule them all

https://genodians.org/nfeske/2021-04-29-platform-driver

#LoRaWAN Payloads are encrypted with AES-128

https://lupyuen.github.io/articles/wisgate?49#more-about-security

Brace yourself ... As I attempt to explain #LoRaWAN Security 😬

https://lupyuen.github.io/articles/wisgate?47#lorawan-security

I highly recommend a Software Defined Radio ... For learning and troubleshooting #LoRaWAN

https://lupyuen.github.io/articles/wisgate?45#visualise-lorawan-with-software-defined-radio