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finally, after owning this camera for 2.5 years I had the sensor cleaned.
after our little beach trip last week and shooting into the sun at f/22 I realized how dirty it was. now it's all squeaky clean thanks to the folks at ritz.
This shot shows - well it is processed a lot different from the previous one - how much cleaner my sensor is. I went to get a cleaning kit, which I did, and while at the shop they used one of those static brushes on my sensor. I think I will now wait until I need to before using the kit. If you look very closely you will actually still find some debris but not much.
This prototype is the Urban Sensor Hack challenge entry of IoT Zürich Meetup and MechArtLab Zürich.
The idea was to build "timid sensor objects", a new breed of citizen sensors that try to look uninteresting and only reveal their sensors once in a while to take a measurement, then retract them again, a bit like a snail.
Using this strategy of camouflage, even delicate sensors could reside in places that humans can reach. Compare this to official sensors in the city which are always ruggedised and often placed out of reach to prevent damage.
The result is the "timid sensor egg", made from a tabletop trash bin, an Arduino, a Servo, two multi-colour LEDs, an LDR and a battery holder - all part of the kit. Plus a BlueSmirf Bluetooth module from Sparkfun. The egg measures brightness and talks to the Internet using a Bluetooth to Pachube Android app we built for another project.
Pictures of the development: goo.gl/YiCLu8
Design files: www.thingiverse.com/thing:166876
Source code: bitbucket.org/tamberg/urbansensorhack and bitbucket.org/tamberg/oktoberfestofthings (BtGateway)
"Urban Sensor Hack Finale: Team Creations" on YouTube: www.youtube.com/watch?v=0ZkNrmfVgLc
After I installed the sensors in the weatherstation: humidity, temperature and air pressure. Fixed to the inside of the weatherstation with tiewraps, cables through the wall.
The Sony A9 easily handles isolated moving subjects like a bird in flight against a clear sky. With 693 AF points spread over 90% of the sensor, pretty much any one of the sensor configurations could be used for shots like this.
As of now, the longest prime in the Sony E mount is the Zeiss 135mm Batis, which is too short for these kinds of bird shots. But the lens works blazingly fast with the A9, and delivers razor sharp images.
My guess is, a longer focal length lens would work just as well, as long as you can keep the subject within the FOV. The lack of mirror blackouts is a real game changer – with a DSLR, it's like tracking a moving subject while blinking 10-15 times a second. With the A9, it's like looking at the subject with your eyes open. The difference is amazing.
Violet Woodsorrel (Oxalis violacea) - Garden weeds, Space Coast, Florida
I used Canon's Elph P&S to make these captures to take advantage of it's short focal length and tiny little sensor that gives crazy long DOFs that can keep all the parts of a subject in good focus.
Sometimes I want the nice isolation that long focal lengths can give, but when I have contrasting colors working their magic in my favor I find that there's more than one way to skin a cat
(i.e. isolate a subject from its BG).
Computer:
Cheap i5 CPU, Asus GTX 760, 128 GB SSD.
Monitors:
Middle one is a cheap 21" LED monitor I bought two years ago, the two side monitors I got from my dad's old office.
I wish I had three identical 24" IPS monitors.
Headset:
QPAD QH-85. It's basically a Tackstar Pro80 (which is a Beyerdynamic design) with an added removable mic.
Mouse:
Mionix Naos 7000. It has one of the best optical sensors around and it's very comfortable if you use palm grip.
Mousepad:
Artisan Hayate Soft Large. Because there's no kill like overkill and man is it awesome.
Keyboard:
Poker 2 with red Cherry MX switches, white LED backlight, and soft O-rings.
This here I shot with my new Olympus O-MD E-M5 Mkii paired to my M. Zuiko 25mm (50mm with the crop factor). I shot it at ISO 100 || f8.0 || at a 3.2 seconds exposure......HAND HELD!
No post processing done either, from the camera here.
Knobbed cylinder variation. A straw is placed into a hole and the child finds the cylinder to go in the hole.
ROHM Semiconductor & ROHM Group companies, OKI SEMICONDUCTOR & Kionix exhibiting at Sensors Expo in Rosemont, Illinois, June 2011.
Image processing, motion sensing, bio sensing, wireless network technology, and human interface sensors were shown.
i finally got up the courage to clean my sensor. i think it worked out pretty well. top left is "before", top right is after the first cleaning and the bottom image is after i cleaned it again.
i used a swab made by microtools. they are not as lint free as they say and the size was a little off (which was annoying b/c the exact size thing was the whole reason i didn't just make my own swab), but it worked very well.
cleaning your own sensor is pretty easy, but if you damage the sensor, it can cost almost as much as a new camera to repair it, so beware.
A 100-watt CO2 laser is shown here (the section glowing in blue) melting and transforming a rod of alumina into a pure sapphire optical fiber. A pair of telocentric lenses with machine vision cameras control the movement rate of the feedstock and fiber, and after many hours of automatic machine-operation, a long continuous piece of sapphire optical fiber can be formed. Such a fiber is one of the more durable materials on the planet, able to withstand temperatures as high as 1,800 degrees Celsius. The glowing pink section is a helium-neon laser which is a component of the laser Heated Pedestal Growth System. It is a visible red laser that is aligned to co-propagate along with an invisible 10.6um CO2 laser beam. The red laser then helps operators to locate and align the invisible laser beam.
ROHM Semiconductor & ROHM Group companies, OKI SEMICONDUCTOR & Kionix exhibiting at Sensors Expo in Rosemont, Illinois, June 2011.
Image processing, motion sensing, bio sensing, wireless network technology, and human interface sensors were shown.
Here is a shot of the external dual sensor box. The sensors are set up to line up nearly at the edges of a 35mm SLR film window.
A small switch on the back selects which pair is used for making measurements. In this way curtain shutters that move vertically or horizontally can be measured.
After looking at the sensor for a professional shutter tester, I may make those round holes slits instead.
This complicates the light source, in that it needs to be much more direct, and not just diffused light.
Sensor City is a collaboration between the University of Liverpool and Liverpool John Moores University and is a flagship University Enterprise Zone.
MRMS HMT Hydro Experiment
The Multi-Radar Multi-Sensor (MRMS) Hydrometeorology Testbed - Hydro (hereafter denoted as HMT-Hydro) experiment is a part of the United States Weather Research Program (USWRP) through the Hydrometeorology Testbed (HMT) that runs from 25 June to 20 July 2018. During the HMT-Hydro experiment, forecasters and hydrologists from the National Weather Service (NWS) will work with National Severe Storms Laboratory (NSSL) research scientists to assess new technology and techniques to improve the prediction and warning of flash flooding. In particular, NWS participants will evaluate new probabilistic hydrologic modeling concepts and output within the Flooded Locations and Simulated Hydrographs (FLASH) system that could help convey the uncertainty of the flash flood threat. NWS participants will also evaluate high resolution precipitation forecasts from the NSSL Warn-on-Forecast (WoF) project and the addition of these forecasts into the FLASH system. Feedback from participants will allow NSSL research scientists to identify how these precipitation forecasts could influence the warning decision making process, including the potential for increased warning lead time. The HMT-Hydro experiment runs in conjunction with the Flash Flood and Intense Rainfall (FFaIR) experiment at the Weather Prediction Center (WPC) to collaborate on the short-term forecasting of flash flooding for both a national and regional scale.
Application scope: temperature sensor probe tube, sensing tube, shell, temperature probe thermometer protection tube, food-grade BBQ probe temperature tube
Tube heads can be pointed, flat, round, flaring, necking, opposite side, split ends
Both inside and outside are smooth and bright
Materials: stainless steel 316(L), 304(L)
Process: automated non-oil sealing process or deep drawn
Elizabeth Agee, Environmental Engineering PhD Student, works to install sensors in the Amazon Rainforest outside of Santarém, Brazil on October 31, 2018.
Ivanov aims to collect water flow data from the trees to build a model that will help us gain an understanding of our push and pull on the region, and how it potentially affects the world’s climate.
Photo: Joseph Xu/Michigan Engineering, Communications and Marketing
The Bottom Bracket Torque Sensor outputs a voltage signal. The signal and the pedal force is linear proportional. Pedal force increases every 10kg, 0.15V voltage changed. The detectable maximum pedal force is 60kg. The input signals into sine wave with the crank angle. The outputs in 0° and 180° are zero. Maximum output is in 90° and 270°. Each rotation of 11.25°, the Bottom Bracket Torque Sensor outputs a speed signal. The shaft rotates a circle with 32 speed signal output.
Product advantages
The advantages include faster start and quicker response. No more temperature drift issue with high reliability in low temperature. Compatibility with standard bottom brackets, more easy to install and flexible length options, custom dimension and compatible with mid-drive motor.
Read the article: extraenergy.org/main.php?language=en&category=&su...
Pressure Sensor is used for measuring pressure of gases and liquids by generating a signal as a function of the pressure imposed. That is high accuracy and is built in over current protection circuit and reverse power polarity protection circuit. Pressure Sensor has zero point adjustment function and Peak and Bottom hold display and can be used to measure other variables such as fluid/ gas flow, speed, water level, and altitude and for controlling and monitoring in thousands of everyday applications. - www.atcomaart.com/pd/70525452705370495152/pressure-transd...