View allAll Photos Tagged raspberrypizero
Manufacturer: DGT
Year: 2019
Elo: 2800-3000..?
Priice: €349
Programmer: ?
Processor: Raspberry Pi Zero
Processor type: 32 bit
Tact: 1 GHz
RAM: 512 MB
Display: e-paper display
Addition: RFID without character recognition
Library: no manufacturer information
Train output: 64 LED ring lights
Levels of play: Three game modes
Dimensions: 44.5 x 40 x 1 cm, field size 48 mm, board size 38.4 cm, king height 89 cm
Power supply: Micro USB socket
Others: Engine Stockfish 8 (last development version "Stockfish 310118"), closed system, no PC connection, WLAN or similar available, polycarbonate housing with printed polycarbonate playing field
Finally got a hold of a raspberry pi zero! Ended up getting it through Pimoroni in the UK, local stock in Australia is scarce and expensive as usual they are the bundles. This will become part of a digital photo frame which will pull photos down from Flickr. Now the wait for the other parts I needed to order on eBay to get this to work! #raspberrypizero #raspberrypi
I got my eclipse computer to Nashville without any trouble by shipping it inside a well packed case, not counting the computer's case. The display backlight isn't green because I changed the connections of a couple of wires to force the red and blue backlight LEDs to be as bright as possible. It needed to be brighter for this picture.
Launched at the end of February 2017, the Raspberry Pi Zero W is a tiny but fully-fledged computer that costs just $10. Details are at www.raspberrypi.org
This X-Ray image was made using a highly modified Scanmax 20 X-Ray mail scanner that I found via eBay (yes, really). I have substantially altered the imaging system; it now comprises a Kodak Lanex Fine fluorescent screen and a Nikon D3100 camera, replacing the original high brightness, low resolution screen and video-based image capture and display. The result is a dramatic increase in resolution, though at the expense of brightness. I usually use 6-second exposures using a 50mm f/1.4 lens stopped down to about f/2.2.
Images are further improved by post-processing multiple captures, usually simply averaging to reduce noise. There is some residual noise, of course, but it would take many more exposures (several dozen) to make any significant improvement in signal to noise ratio or resolution.
Please, please, please don't think that you can just get an X-Ray machine off eBay or wherever and safely start making images like this. Without proper shielding and other precautions, ionizing radiation such as X-Rays can be seriously hazardous to your health.
Comments are warmly welcomed.
This is my second revision of the eclipse computer I'm working on. It may be the final hardware. Here, it is running on 8 AA rechargeable batteries. I changed the display so it can have more text, but it is a darker display that requires more use of the backlight. I gave it automatic backlight brightness control, and a combined dial and button for user input. I also fixed the trouble I was having with the INA219, so now the battery voltage and discharge current can be monitored.
Hopefully I can get this through airports without too much trouble.
#maudlinmodellers 8 Dec 2018 #raspberrypi #raspberrypizero #raspberrypizerow message protocol #prototyping #softwaredesign transmit and receive. Commanding #arduino #arduinouno from RPi. This example shows Arduino turning on LEDs based on commands from RPi. Plan to use this sort of idea to control turrets on #starwars #millenniumfalcon #modelkit #iot #softwareengineer #softwareengineering #geek #starwarsfan #moncton #newbrunswick #canada
I wanted to get a picture to show my eclipse computer in action. One thing it did was to alert me when to take pictures during the partial part of the eclipse so that I would have pictures showing the sequence of the occultation. I must not have realized it was about time for the next image of the sun when I took this image. The pictured computer beeped a warning 60 seconds and 30 seconds beforehand, and then a different series of beeps (3 short, one long) to help me time the image to much greater precision than is needed. After I took this image, I switched to the camera on my tripod that was already looking in the general direction of the sun, and centered the sun in the frame.
The eclipse computer worked out great, but one flaw is that the schedule of the pictures showing the partial eclipse was not recorded. I'm going to modify the code to re-generate the schedule for the location of totality, which the computer did record. I also configured the computer to invoke gphoto2 to set the clock of any camera that was connected to its USB port, and I used this feature, so the time stamps on the pictures should be pretty good.
First video from a custom built Kodak Brownie digital time lapse camera. Steam engine running at Kew Bridge. Raspberry Pi Zero combined with cheap webcam housed inside a hacked Kodak Brownie case capturing 1 still image per second rendered to video.
My Raspberry Pi Zero controlling an LED. While the circuit is connected to a permanent power source, I have a python script that can turn the LED on for 10 seconds and then it turns off, using pins 11 and 14.
I found this harder than I thought I would, but it's still actually been really interesting.
Without a soldering iron, it's not easy to get things in place and I'm still getting me head around resistors again. The recommended ~300 ohm resulted in a very dull LED, but using a 1K resistor, I was able to get a nice and colour.
Using a small tripod I captured this on our coffee table. The cables are nice and snug in the breadboard but loose in the Pi Zero itself. Now that I've got this working, I want to get a row of LEDs working so that I can use this to flash some lights!
Not the first photo I had planned to share as part of my project 365, but here we are!
Walk from Bank to Waterloo along The Thames to unwind after a day's work. Captured with a digital pinhole webcam controlled by a raspberry pi zero embedded in a powder compact. 1200 frames captured at 40 frames per minute animated at 10 frames per second.
I put together a little setup for testing some software I'm writing to use various bits of hardware. Here, a program I wrote uses a LCD to show the computer's IPv4 address. It isn't a graphic display, but it does allow 8 characters to be defined by software, so I gave it a wireless LAN icon. I was thinking about making variations of the icon to provide some idea of signal strength, but the small 5 by 8 size makes that difficult. Only two icons seem to work, but that only gives strong and weak, and I'm not sure how useful that might be.
The logic level converters between the computer and display aren't needed for this display. I'm planning on trying out a graphic display that uses a very similar interface. I can swap out one display for the other while changing only one connection, save for backlight connections. The logic level converters will be needed for that display, and now I know they'll work.
This is an X-Ray image of a Raspberry Pi Zero.
It was made using a highly modified Scanmax 20 X-Ray mail scanner that I found via eBay (yes, really). I have substantially altered the imaging system; it now comprises a Kodak Lanex fine fluorescent screen and a Nikon D3100 camera, replacing the original high brightness, low resolution screen and video-based image capture and display. The result is a dramatic increase in resolution.
Images are further improved by multiple captures post-processed in Registax 6, which does a kind of intelligent averaging to reduce noise and enhance resolution. This image is made from about 10 exposures. There is some residual noise, of course, but it would take many more exposures (several dozen) to make any significant improvement in signal to noise ratio or resolution.
Please, please, please don't think that you can just get an X-Ray machine off eBay or wherever and safely start making images like this. Without proper shielding and other precautions, ionizing radiation such as X-Rays can be seriously hazardous to your health.
Comments are warmly welcomed.
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60x90cm stripbox hung camera left and up with white bounce/fill card opposite
This is 2 exposes blended for the LEDs - the 1/30th sec expose registered the LED but not as bright as I wanted - the flash also wiped out the intensity of the LEDs. Second ambient only exposure (including the ghost/flare on the green LED) blended using "overlay" mode.
via PocketWizard PlusII
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This is a Raspberry Pi Zero sitting on top of 4x port USB hub made by a Czech company called UUGear. The RPi Zero has 1x mini USB port for devices but it does not supply enough power for anything requiring above 100mA it seems.
My cheap wifi dongle (the RPi Zero has no ethernet of wifi!) wanted more current which the RPi provided and as such was hugely unreliable to bring online. The UUGear USB hub is a neat solution that requires no soldering or extra wires and powers itself from the 5V rail of the RPi (via test pads on the underside of the PCB). With the hub attached power is no longer a problem (each port can draw 500mA or single port can draw up to 2A according to the documentation) so the RPi Zero can now use my wifi dongle and also attach keyboards and a 2.5" USB hdd too!
Downside? The RPi Zero's small form factor is appealing for some uses but its got less of everything else too: USB ports (1 vs 4), connectivity (none vs eth/wifi) and processing (1x core 1Ghz/512MB vs 4x core 1.2Ghz/1GB).
Getting network connectivity like this brings the price to ~23GBP (RPi Zero 4GBP plus 2.50 delivery, Zero4U 10GBP, wifi dongle 6GBP) which is 69% of the cost of an RPi3.
Frankly it comes to more then £4 once you have added on a small number of peripherals, and bought an SD Card, but it is still ridiculously cheap!
Mounted on a scrap piece of Paxolin to make it more robust.
Running a small number of very small and insignificant web sites, which you probably can't see from the photo ... !
A very affordable way to learn about Linux, inter alia ...
My Raspberry Pi Zero has a new home, an orange acrylic case that will hopefully protect it a bit better than I can!
My first Pi Zero developed an issue with the micro USB out where it couldn't power anything connected.
This new one, and it's case, will hopefully last longer and perform a bit better than the last one.