#sensors

Curve is bending, sun on a downward arc. Helps also that the intake vents are on the cool side of the house now (exhaust fan is on the west side). I'm unsure what the second bump in the temperature indicates... #atticfan #sensors

Attic temperature dropping fast! Not sure if the fan is still running, need to go up there and listen... still a bit of light, sunset. #atticfan #sensors

No fan for sure, but the very cool weather outside is equalizing up there quickly. I guess no way to tell what impact it had without turning the fan off and comparing on a similar sunlight/weather day... it definitely is doing something good, but just no way to quantify the number of degrees it is helping (it clearly is flattening the curve and likely the peak) #atticfan #sensors

Ha! RNERF100VTXR in the big mystery FCC device database! https://fccid.io/RNERF100VTXR #sensors

Popped into the attic. The sensor is hanging by a string off the rafters right above the attic door, so I can change batteries easier. Also away from aurfaces which retain temperatures. Used Lithium batteries $ as they work in extremes better and should last longer. Hoping to not have to change these often. Even with the fan running... 87F! Outside air temp is 74F. #atticfaninstall #atticfan #sensors

So, the nice thing about this sensor it is garden variety, 433Mhz, which means it can be received and decoded very easily by an SDR card. Since I have many of those, plugged one in, and installed rtl-433 (debian) (sudo apt install rtl-433) Run the app... and already able to read values! You can then log that to a text file, sent it to HA, draw pretty graphs, etc. etc. etc. #rtlsdr #433Mhz #sensors

csv for your spreadsheet, json for your software code, whatever... #rtl433 #sensors #rtlsdr

Rudimentary plot of attic temperatures so far... matplotlib x axes needs cleanup, lol. (time to go look at the docs for that one. btw, people who say "ask the LLM to do that for you" don't get the point of doing these projects, which is not the graph, but the learning all the technology/libraries/etc. involved and understanding how they work; integration of all the parts; etc). #attictemperatures #sensors #rtl433

Still haven't had time to fix my plotting code, but this is fun.... Plot started around 10pm last night when I quickly threw an SDR card on there and stated logging, and wrote some code to plot it. #atticfan #sensors #rtl433

Will be interesting to see what this graph does when the fan kicks on. #sensors #atticfan

HA! Attic fan has turned on! You can see it in the graph... #rtl433 #sensors #atticfan

It's the little attic fan that could, lol. Attic is 27.2C, ambient outdoors is 23.4C The fan is not bringing it down to ambient, but has some effect.... but it's definitely fighting all that sunlight. #atticfan #sensors #rtl433 #wx

"Captain, I'm giving 'er all she got!" #atticfan #sensors #rtl433 #rtlsdr

Spying on "reconnaissance spacecraft" in geostationary orbit (GEO), is gaining momentum. Company Astranis building Perceptor spacecraft designed to capture satellite activity in GEO orbits. FYI, GEO is typically 35,786kms/22,236 miles above Earth ... popular for communications, weather and "reconnaissance" satellites. https://www.space.com/space-exploration/satellites/astranis-perceptor-satellites-geostationary-orbit-space-situational-awareness #Space #Satellite #GEO #GeostationaryOrbit #Perceptor #Astranis #Spacecraft #Reconnaissance #Sensors #OpticalSensors #USSF #EarthObservation #USGov

PLC Input LED ON, but Logic OFF? Comment “PLC” + PLC model + input number for troubleshooting or sourcing support. know more : https://zurl.co/BLEtz#PLC #IndustrialAutomation #PLCTroubleshooting #ControlPanel #Sensors #ElectricalMaintenance #MachineAutomation #Smidmart

The Seven Sensors and Breakout Boards to Avoid in a Product https://hackaday.com/2026/08/02/the-seven-sensors-and-breakout-boards-to-avoid-in-a-product/ #Parts #Roundup #Mainssafety #Rohs #Sensors

Add Sensors to Everything! https://hackaday.com/2026/07/25/add-sensors-to-everything/ #HackadayColumns #Newsletter #Rant #Sensors

Echolocation for Drones https://hackaday.com/2026/07/20/echolocation-for-drones/ #Dronehacks #Air #Bat #Bats #Bimimicry #Biomimetic #Drone #Echolocation #Obstacleavoidance #Sensors

Photoelectric sensor selection: target and background matter. Wrong selection can cause false detection, missed objects, and unstable PLC inputs. https://zurl.co/CdDpc Article: https://zurl.co/kT6Wq#PhotoelectricSensor #Sensors #IndustrialAutomation #SensorSelection

💁🏻‍♀️ TIL: Engineers at #PennState have developed a conductive #ink that works like face paint to create customizable electrodes for monitoring #heart, #muscle, and #brain activity. The #water-based ink dries on #skin within minutes, conforms closely for more accurate readings, and can be washed off and reapplied. In tests, the sensors tracked #ECG for 12 hours and fed muscle signals to a robotic #prosthetic. 👉 https://www.popsci.com/technology/colorful-paint-on-health-sensors/ #sensors #health #wearables #stem #ecg #emg #science #invention #engineering #biotech #tech #technology