RTL-SDR monitoring the 433Mhz wireless packets send by my home automation nodes (RFM69 FSK) #IoT #SDR #homeautomation
RTL-SDR monitoring the 433Mhz wireless packets
New toy RTL-SDR v3 complete bundle
New toy: RTL-SDR v3 complete bundle #SDR
LoRaWAN antenna works pretty well
The new #LoRaWAN antenna works pretty well, consistently receiving packets from a Moteino M0+RFM95 with a 82mm plain wire as antenna parked 13km away, SF10, -117dB RSSI. Got sporadic receipts from ~20km away
A proper antenna for my LoRaWAN gateway
Finally a proper antenna for my @thethingsntwrk #LoRaWAN gateway.
RFM95 with a simple 82mm wire as antenna
RFM95 with a simple 82mm wire as antenna has a much better range than the ESP32 TTGO LORA module with uFL antenna. Less is more? #LoRaWAN #IoT
80cm 5.8dBi antenna for my RAK2247 based LoRaWAN gateway
Ordered a 80cm 5.8dBi antenna for my @RAKwireless RAK2247 based #LoRaWAN gateway.
Lowpower listening on 433Mhz
Lowpower listening on 433Mhz while consuming 1.2uA. Range about 100m, reaction time about 800ms-1.5s. The node on the right sends data/awakes the node on the left upon button press, consumes 300nA in standby. Using RFM69 transceivers with Atmega328 and @LowPowerLab 's library More details under scope: the receiver wakes for ~250us every second, consuming 19mA…
ESP32 gateway with a wireless 433Mhz fire alarm
Interfacing an ESP32 gateway with a wireless 433Mhz fire alarm, see it in action https://youtu.be/4-7YdF4ifOU #IoT #esp32 #smarthome
Pairing a and controlling with a touch GUI a 433Mhz
Pairing a and controlling with a touch GUI a 433Mhz wireless relay #IoT #esp32 #lvgl
16A relay actuator with 433Mhz RFM69
Designed a high quality 16A relay actuator with 433Mhz RFM69, two separate DS18B20 plugs, option for RTC and SPI flash. Will be used with the thermostat controller I tweeted yesterday. #IoT #smarthome #arduino
2.4GHz vs 433MHz range tester
Wrote a 2.4GHz vs 433MHz range tester: sending espnow 2.4GHz and RFM69 @ 433MHz from master to a slave node. 433MHz range is much better from what I can see but I am comparing apples to pears here..
Testing 433Mhz coiled spring antennas on rfm69
Testing 433Mhz coiled spring antennas on rfm69
Spectrum analysis with RFM12B
Poor man’s spectrum analysis with the RFM12B – scanning the 868MHz band to check how noisy my chosen channel really is.
433Mhz OOK with Funky v2 to remotely control power sockets
A 15 minute project: switching 433MHz OOK power sockets from the Funky v2 with a $5 ebay transmitter and FuzziLogic’s library.
Controlling 433Mhz RF power sockets with a RFM12B module
Controlling 433MHz RF power sockets straight from an RFM12B module – appliance switching without wiring a single relay.