New blog #rfid #hacking

When debugging LF RFID protocols on the #ChameleonUltra, you often need to answer a basic question: is the field actually doing what the firmware thinks it is? For reader-talk-first protocols like #EM4305, the entire exchange depends on gap-encoded commands being sent correctly into the field. Without a way to observe the field directly, a firmware bug that silently prevents gaps from being sent looks identical to a tag that isn't responding, both produce LF tag not found.

The #ProxMark3 has lf sniff and a full suite of data analysis commands for exactly this reason. These commands bring the same capability to the ChameleonUltra, using the SAADC already present on the #nRF52840 to sample the antenna field at 125kHz.

https://sec1.dk/blog/lf_sniff_blog.html

#Mailbag #164: #Elektronik von #LilyGo #China, #Unboxing, #Review, #Bewertung, #Gadgets #Schnäppchen

--> https://youtu.be/81prg2OEIEs

#Maker #DIY #Mikrocontroller #Warentest #Produkttest #Gadgets #Basteln #LoRa #LoRaWAN #Meshtastic #Funk #nRF52840 #Arduino

Внезапно сделал открытие, что...

В #ESPHome завезли:

• поддержку ZigBee
• поддержку nRF52
• поддержку Thread (ESP32-C5, ESP32-C6, ESP32-H2)

То есть уже можно пилить всякие домашний IoT не чертыхаясь от WiFi и пользоваться мешем 🎉

素晴らしい！

#hardware #home #IoT #SmartHome #ZigBee #Thread #ESP32 #nRF52 #nrf52840 #ESPHome #HomeAssistant #mesh #log #news #nice

ThinkNode M3 Uses LR1110 and nRF52840 for Meshtastic Tracking

https://fed.brid.gy/r/https://linuxgizmos.com/thinknode-m3-uses-lr1110-and-nrf52840-for-meshtastic-tracking/

T-Echo Plus #Meshtastic Gerät mit Umwelt-#Telemetrie-#Sensor erweitern

--> https://cool-web.de/nrf/lilygo-t-echo-plus-lora-meshtastic-bme280-bme680-i2c-sensor-anschliessen.htm

#nRF #nRF52840 #LILYGO #TEchoPlus #I2C #BMP280 #BME280 #BME680 #Maker #DIY #Mikrocontroller #LoRa #Funknetzwerk #868MHz #Jedermannfunk #Hardware #Analyse #Oszilloskop

Review LilyGo T-Echo Plus, brandneues Meshtastic Gerät

--> https://cool-web.de/nrf/lilygo-t-echo-plus-lora-meshtastic.htm

#nRF #Nordic #nRF52840 #LILYGO #TEchoPlus #Meshtastic #Maker #DIY #Mikrocontroller #LoRa #Funknetzwerk #868MHz #Jedermannfunk #Review #Bewertung #Hardware #Analyse

Neues Video:

#Mailbag #154, #Elektronik von #SeeedStudio #China, #XIAO #nRF52840 & Wio #SX1262 Kit, #L76K #GNSS Module

--> https://youtu.be/uK51NMJYwSc

#Maker #DIY #Unboxing #Mikrocontroller #Warentest #Review #Produkttest #Gadgets #Basteln
#LoRa #LoRaWAN #Funk #ESP32 #Arduino

Looking for an affordable #MeshCore or #Meshtastic node under €10?
Are you at #39c3 ? 👀

Then these #FakeTec boards might be exactly what you’re looking for.
🔋 #nRF52840 (ultra low power)
📡 HT-RA62 (SX1262)

Versions at a glance:
• V3 – bigger pads, 2 buttons
• V4 – V3 + MOSFETs for external hardware
• V5 – battery protection, low profile, JST connector, dedicated battery pins
• V6 – V5 + solar support (CN3791 MPPT)

👉 Find me at #39c3 and get one of these versions (bare PCB) for free.

#LoRa

Du willst eine preiswerte #MeshCore oder #Meshtastic Node für unter 10 €?
Du bist auf der #39c3? 👀

Dann könnten diese #FakeTec Boards genau das Richtige für dich sein.
🔋 #nrf52840 (ultra stromsparend)
📡 HT-RA62 (SX1262

Versionen kurz erklärt:
• V3 – größere Pads, 2 Buttons
• V4 – wie V3 + MOSFETs für externe Hardware
• V5 – Batteryschutz, flach, JST, dedizierte Batterie-Pins
• V6 – wie V5 + Solar (CN3791 MPPT)

👉 Finde mich und bekomme eine dieser Versionen (leere PCB) geschenkt.

#LoRa

Aktueller Tiefstpreis für #nRF52840 Evalboard bei Aliexpress: 1.89EUR

cc @octoate ...wo wir gerade das Thema hatten ;-)