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photo taken after bringing it to Nikon for cleaning.
so i got a call yesterday afternoon from Nikon that my D40 was ready for pickup. so i passed by before going to work this morning and took this test photo. impressive!
it's good to be back!
The sensor, a Honeywell SS495A1 ratiometric Hall-effect sensor, is glued to a small brass tab that is then bolted into the Brooxes Better Gear Guide. The sensor then plugs into the Pololu Robotics Micro Maestro controller and is sensed as an analog device.
Here's a touch sensor. Just touch the bare wires on the lower right part of the board and the LED lights!
Line array sensor 512 pixels. For a new detetor to capture flying moths at night. Film is ready to make the PCBs. The aim is to build a tunnel with laser detection for flying moths at night.
The line sensor effective lenght is 64mm as detector. The exposure is done with a 650 nm laser line.
It has been said that the cx sensor in the nikon 1 sucks because the sensor is small. Small sensors have increased depth of field and gather less photons. So I set up a comparison of dx and cx on the Nikon platform, a d7000 and a v2. Lenses are equivalent normal primes at 1.8 max aperture.
As you can see, increase in dof is obvious on cx. Not so obvious is the light gathering edge of dx in the shadows, there is more glow in the shadows on dx, a more sharp cutoff on cx. The auto wb on the v2 did a much better job.
Which one captured a better image?
On May 7th, with Kon-Hyong Kim and Muhammad Hafiz Wan Rosli introducing % implementing the SINUNI - sensor system
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I'm not exactly sure what kind of sensor this is, but it is some kind of microphone or vibration sensor used as feedback to the control board. If the piston starts hitting the ends of it's travel, this sensor picks that up and the power is backed off.
After a race car left the track at Eastern Creek motor racing circuit, NSW, Australia.
20 May 2006
Canon 350D (Rebel XT) with Canon 70-300 IS lens @ 300mm (~480mm)
ISO 800 1/500 @ F8 available light
IMG_3604
This sensor board dubbed "allinone" sports a nice selection of sensors for a very good price:
HMC5883 Triple Axis Magnetometer
BMA180 Triple Axis Accelerometer
BMP085 Barometric Pressure Sensor
TG3200 Triple-Axis Digital-Output Gyro
I will use this board together with the Seeduino Mega controller I purchased a while ago already. The firmware will likely be MultiWii, as it already supports this IMU. This will replace my current setup (ArduIMU+ v2 flat with a home-grown firmware).
Participants during the session "Diamond Sensors.Explore" at the World Economic Forum - AMNC 17, Annual Meeting of the New Champions in Dalian, People's Republic of China 2017. Copyright by World Economic Forum / Ciaran McCrickard
The green thing is a proximity sensor that you'll see on most any thrill ride and in many other applications. A proximity sensor can detect a metal target in their sensing field (usually an inch away or so) using induction. They help the controller know where trains are located, what position the loading gates are in, if the brakes are open or closed, and other operational aspects of a ride.
On the OSU campus, Ben McCamish, Eduardo Cotilla-Sanchez, and Ziwei Ke work with a new sensor technology designed to gain a better understanding of the local electric grid. (Photo courtesy of Oregon State University)
I am in the process of building a barometric data logger based on the Arduino coupled with Adafruit's logger shield. I live in between the first two Watchung mountains in north/central NJ, so I thought a drive around town would give me some nice pressure differentials to record.
y-axis is relative changes to the sensor output as they diverge from an initial reading. x-axis is seconds.
this data was collected using an oversampling method to eliminate noise. what happens when you try to get 10-bits of good data but you don't put the MCU to sleep before reading? you get 8-bits of good data (and 2 LSBs of crap). see the previous image in this stream.
there is higher pressure at lower altitudes, so troughs on the plotted data (lower pressure) indicate mountains, while peaks indicate valleys or low areas. kind of backwards but that's the way it is.
no corroboration between sensor outputs and actual pressure values (yet). just diggin' those delta-v's, man.