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Thinking about creating a low cost, battery powered temperature and humidity #LoRaWAN #IoT node with always on LCD like this:

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/

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. Next steps are finding proper antenna and outdoor enclosure. #lorawan

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 (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 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…

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

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.

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

CuurentRanger firmware cusomizations and update completed

Now that I own a 'current ranger' device, I am measuring the power consumption of old projects of mine. Pictured below a Atmega328+RFM69 based smoke alarm detector, standby current is 6.5uA so practically no battery impact..

Kenwood breadmaker hub & drive coupling assembly replacement instructions literally say take apart the breadmaker to pieces in order to replace the broken drive. Estimated repair time: 1 hr 30 min. Me: drill the bottom out, swap the part and be done in less than 15 min The replacement instructions: https://www.espares.co.uk/advice/careandmaintenance/replacing-a-breadmaker-hub-and-drive-coupling-assembly-twist-and-lock

@LowPowerLab Current ranger just arrived, excited to test out

Testing a cheap PIR sensor, seems to be working fine down to 2.0V with no modifications (strange?). 25uA quiescent current at that voltage. Considering it for a battery powered PIR IoT node. Power consumption at 3.0V:

What is the proper shielding enclosure and measurement location (indoors/outdoors) for Geiger counter projects? Taking mine outside gives Chernobyl level readings , indoors is 0.15uSv/h (15-25 cpm) .. so obviously direct sunlight affects the GM tube heavily, and it must be shielded. Good information here: https://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=4540

Completed a connected environmental radioactivity monitor project. Pumps live data to the geiger counter world map http://gmcmap.com, records readings history for dashboard visualization and alerts me if abnormal values are detected. #IoT

Geiger counter kit just in, planning on recording readings over time and setting up a cloud based alarm. Aliexpress link: https://a.aliexpress.com/_BTKtci

My ZX80 disassembly notes on the back of my ZX Spectrum Basic programming book. Sent me back to 1988 for a moment..

Trained my D.O.G. (Digital arrOw Grabber) project's NNN (Natural Neural Network) to fetch back arrows through positive reinforcement #AI

33 FPS on simple brightness settings GUI on #esp32 + LVGL v7

HMI development on my laptop, then flashing onto #esp32 using #lvgl

Toying with LVGL v7 on my Mac in preparation for upgrading my embedded projects to that version. By the looks of it, it will take a few days of fiddling. Why do they make so many breaking changes? Had to go through the same hell when upgrading from v5 to v6; Deja Vu…