Router upgrade finally arrives. Family of four working and studying from home plus 25 connected smart things made the old router unreliable. Planning on flashing Merlin. 3D printed a wall mount for the router Measurable speed improvements – new vs old router speed test
Testing a #LoRaWAN node with a solar harvesting module. Sending temp and batt once every 5 min @ SF7. Node is placed near a north facing window, it is showing and completely overcast. 1800 lux measured by phone. Recording battery readouts, will post them in few days. #IoT
Considering doing OTAA once, storing the credentials and using ABP thereafter on my LoRaWAN projects e.g. battery change, reset etc. Rationale: OTAA requires good gateway->node reception, whereas in remote areas this might be hard to achieve. Does this violate some good practice?
Received a SMB20 Geiger tube to replace the J305 I had on my Geiger Computer project. Should work much better outdoors, the J305 goes crazy on sunlight. Works well after adjusting the CPM to uSv/hour constant, see more here https://cs.stanford.edu/people/nick/geiger/
Not to spoil the party, but is this normal now? @Microsoft
TBH, I didn't realize relay coils dissipate that much heat when energized. This one gets to nearly 29*C. TE has an interesting application note on PWM-ing the relay to keep temp and energy consumption low. https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=13C9133_DC_Relay_Power_Reduction_AppNote&DocType=CS&DocLang=EN
Will be testing a CCS811 air quality breakout; a digital gas sensor that senses a wide range of Total Volatile Organic Compounds (TVOCs). Doesn't seem to be battery friendly though.. #IoT
Experimenting how many #LoRaWAN messages (20 bytes payload that includes battery reading and internal CPU temperature @ SF7) can a SAMD21+RFM95 send on a 2000mAh Li-Polymer battery. Currently at 23392 messages, and battery is at 3.826V (80% full).. aiming at 120K messages. #IoT Si it died today at 68323 transmission. The battery is 1400mAh, not…
SAMD21’s internal temperature seems pretty accurate to measure ambient temperature when on battery power/mostly sleeping. Experimenting with sensorless room temperature monitoring using #LoRaWAN
Experimenting with WebUSB configuration of a SAMD21 based LoRaWAN node, PoC works very well so far. Will extend with all posible configurations, so just about anyone could customize the settings within a minute or so. Just plug in, configure and go!
RTL-SDR monitoring the 433Mhz wireless packets send by my home automation nodes (RFM69 FSK) #IoT #SDR #homeautomation
New toy: RTL-SDR v3 complete bundle #SDR
Migrated all of my projects to #VisualStudioCode, can now develop under one IDE. Works much faster too, a 300K lines of code project of mine builds under 15 seconds on 8 core i9/16G compared to 37 seconds on Eclipse. Should have done this long ago..
Useful LoRaWAN airtime calculator; helps calculate the max daily transmissions per SF/payload size to comply with @thethingsntwrk fair access policy #IoT #TTN #LoRaWAN –> https://docs.google.com/spreadsheets/d/1QvcKsGeTTPpr9icj4XkKXq4r2zTc2j0gsHLrnplzM3I/edit#gid=0
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
Just ordered one of @jrsikken's Solar harvesting LiPo chargers, looks promising https://www.tindie.com/products/jaspersikken/solar-harvesting-into-li-ion-battery/
@thethingsntwrk console shows my #LoRaWAN gateway as offline, friends confirm the same with their gateways. Is it something local?
Finally a proper antenna for my @thethingsntwrk #LoRaWAN gateway.
Ah, that Daylight Saving Time nonsense again..
Fail of the day: @adafruit 's pi+3.5" 3D printed enclosure won't close. I have their older 3.5" TFT+touch version though, this was designed for the newer one.
The 170 EUR Hikvision thermal camera arrived, impressive 160×120@25fps quality
Debugging TTN/LMIC code with my new Atmel-ICE in @PlatformIO_Org, no more serial/LED for debugging 🙂
An Atmel-ICE landing on my desk @MicrochipTech, guaranteed fun time ahead. Planning on fiddling with Cortex M0 bootloaders as a starter.
According to @FedExEurope, I moved:
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
#SAMD21 based Moteino M0 + rfm95 #LoRaWAN module + SPI flash sleep current around 12uA. Not great, not terrible. Wakes periodically to send data to The Things Network using LMIC Arduino library. #IoT Dropped to 8.5uA with "crystalless" option.. cool 🙂
Moteino M0 sending data to the @thethingsntwrk using RFM95 and LMIC library. Had to wire RST and DIO1 pins for full library compatibility. #IoT #LoRaWAN Battery powered 🙂
PLA fillament shipment undergoing quality inspection. #3Dprinting
Wondering why @LowPowerLab Felix decided to use non-standard PCB thickness of 1.3mm on the Moteino M0, can't use a standard RPSMA connector
#3Dprinted an enclosure for a TTGO #ESP32 #LoRaWAN node, not a very good fit though.. will try alternatives
Experimenting with SAMD21D posing as a mass storage device using @Adafruit's TinyUSB library – planning on using this feature to expose configuration JSONs #IoT Added external SPI flash and using it as R/W mass storage device, works nice and smooth 🙂 Firmware configurations are now esposed as JSON file when you plug it in a…
Just received a @LowPowerLab Moteino M0, will use it with the RFM95 #LoRaWAN module I tweeted earlier. Has the SAMD21 Cortex M0 uC, a good chance for me to learn more about these. #IoT