PLA fillament shipment undergoing quality inspection. #3Dprinting
PLA fillament shipment undergoing quality inspection
Non-standard PCB thickness of 1.3mm on the Moteino M0
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
#3Dprinted an enclosure for a TTGO #ESP32 #LoRaWAN node, not a very good fit though.. will try alternatives
SAMD21D as a mass storage device
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…
Moteino M0 and RFM95 LoRaWAN module
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
RFM95 LoRaWAN modules to experiment with IoT
Received few RFM95 #LoRaWAN modules to experiment with #IoT
80cm 5.8dBi antenna for my RAK2247 based LoRaWAN gateway
Ordered a 80cm 5.8dBi antenna for my @RAKwireless RAK2247 based #LoRaWAN gateway.
TTN LoRaWAN gateway on the roof
Moved my TTN #LoRaWAN gateway to the roof, should have much better coverage than indoors.
My original 2017 project
When someone rips your idea and presents it like thei own. Left the copycat, right my original 2017 project
Sofia and suburbs with one of @boyannedkov #LoRaWAN GPS
Drove around Sofia and suburbs with one of @boyannedkov #LoRaWAN GPS trackers, impressive coverage for a 20mW RFM95 transmitter. Managed to reach a gateway 32km away, practically no blind spots. External antenna, pictured below. #ttn #ttnmapper
3D printing a T-Rex skeleton
3D printing a T-Rex skeleton for the kids (including the grown up kid tweeting this)
3DBenchy printed in 1h 45min
#3DBenchy printed in 1h 45min, using 100% default settings as I have no clue what they mean yet. Result is pretty good for what I care. Creality Ender 3 V2, Cura
64.4 dB noise level while 3D printing 3DBenchy
64.4 dB noise level while 3D printing #3DBenchy on my new Creality Ender 3 V2, mostly fan hum. Stepper motors are barely hearable.
Creality Ender-3 V2 3D printer
Just received a Creality Ender-3 V2 3D printer, my first. Hope it works well.
IoT and engineering stuff
Stocking on gadgets in anticipation of another lockdown in the winter.. mostly IoT and engineering stuff. The bad thing is my Aliexpress wishlist has ~200 more items..
4 EUR LoRaWAN gateway enclosure for outdoor use
Completed a 4 EUR #LoRaWAN gateway enclosure for outdoor use using PVC fittings. Apart from the aesthetical crime being committed, it is pretty cool. #IoT
GCC based SDK
@Flashoholic Just heard back from Dialog Semi: "we are working on a GCC based SDK but this is not public yet and not ready to be released." – That's great news
That new SoC
When you are eager to try that new SoC, but don't have the breakout board.. #IoT #DA16200 @DialogSemi Better view
My profile picture toonified by AI
My profile picture toonified by #AI https://deepai.org/machine-learning-model/toonify TBH I look like a neanderthal with glasses. The rest of the family looks cute though, so there is hope.
DA16200MODs, the new 70uA while connected to WiFi SoC
Just received couple DA16200MODs, the new 70uA while connected to WiFi SoC #IoT
Low cost, battery powered temperature and humidity node
Thinking about creating a low cost, battery powered temperature and humidity #LoRaWAN #IoT node with always on LCD like this:
RFM69 library for further power consumption savings
Having an interesting discussion with @LowPowerLab's Felix on optimizing his RFM69 library for further power consumption savings, check it out here: https://lowpowerlab.com/forum/rf-range-antennas-rfm69-library/rfm69-driver-interrupt-based-wait-for-packetsent/
HIKVISON H10 160×120 25Hz IR infrared thermal imager camera
Ordered a HIKVISON H10 160×120 25Hz IR infrared thermal imager camera for €170. Sounds too good to be true, awaiting delivery to make a detailed review. The known issue is that menu is in Chinese language only.
My TTN LoRaWAN gateway is up and running
My TTN LoRaWAN gateway is up and running. Next steps are finding proper antenna and outdoor enclosure. #lorawan
DA16200 WiFi SoC
Interesting new WiFi SoC by @DialogSemi – the DA16200. Promises averaged 72µA power consumption and 1 sec response time while always connected to the network. Perfect for battery powered WiFi #IoT nodes. I will order few samples and research it further. https://youtu.be/d80X2GtTNBk
PiSupply LoRa Gateway HAT for Raspberry Pi
Just ordered a @PiSupply LoRa Gateway HAT for Raspberry Pi (RAK 2247 based). Planning on using it for a @thethingsntwrk gateway. #IoT
Wireless and battery powered bistable relay IoT node
Wireless and battery powered bistable (latching) relay IoT node with practically unlimited standby listen time. Relay is rated 16A/230V. Controlled by ESP32+RFM69 gateway (WiFi, MQTT). What practical usecases for this can you think of?
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…
Low cost monochrome 7 segment LCD display
Dug up an old prototype of a low cost monochrome 7 segment LCD display + DS18B20 temperature sensor + Atmega328 + RFM69 433Mhz transceiver project. 30uA sleep current. e-paper is still relatively more expensive alternative. #IoT
My first handeld ham radio
Just received my first handeld ham radio. The Baofeng UV-5R seems to be a popular model, feature packed, powerful (1/4/8W?? selectable) and dirt cheap. Switched TX power to 1W to avoid accidental transmission interference until I get proper ham radio license.
TLS handshakes in the times of COVID19
Just realized that we shouldn't be using TLS as it involves handshakes. This is bad in the times of COVID19
PCBs after soldering the components
Do clean your PCBs after soldering the components. Before/after power consumption measurements, the soldering flux, dust create tiny, invisible pathways for current to leak.. #IoT