At first I thought, "faux-OLED"? Then I thought, maybe an OLED from Vietnam (like the delicious soup)? No, that was not it. But this IEEE article explains how new blue phosphorescent materials fix OLED display weaknesses:
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Showing posts with label OLED. Show all posts
Showing posts with label OLED. Show all posts
Friday, December 22, 2023
Wednesday, February 3, 2021
Shuji Nakamura -- The Inventor of Juliano Blue LEDs
He is the 2014 winner of the Nobel Prize for Physics. He is the person who figured out how to make blue light LEDs through the use of an Indium Gallium Nitride semiconductor. I was reading about him this morning in "Conquering the Electron" by Derek Cheung and Eric Brach. Thanks to Nakamura, the numerals on all my frequency displays glow in a pleasing Juliano blue. Three cheers for Nakamura!
More on him here:
https://www.trumpf.com/en_US/presse/online-magazine/nobel-price-winner-nakamura-wants-more-light/
Labels:
frequency counter,
Japan,
Juliano -- Pete,
Laser,
LED,
OLED
Monday, October 7, 2019
Organic Electronics
This made me think of the OLED screens. But they are not, as far as I know, gluten-free.
This guy would probably be a QRPer, probably running an HW-8 off solar panels.
Labels:
OLED
Saturday, September 2, 2017
SolderSmoke Podcast 199 Eclipse, Regen, BITX, DC RX, 3D OLEDS, Iphone Boxes, Mailbag
SolderSmoke Podcast #199 is available.
http://soldersmoke.com/soldersmoke199.mp3
2 September 2017
The Eclipse. The Floods.
Sawdust Regen gets John Henry off to a good start.
Voltage regulators as audio amplifiers
The return of the Simple-ceiver (Direct Conversion)
Ceramic Resonators
3D OLEDS
iPhone Boxes as rig enclosures
Electric Radio on Frank Jones
17 Meter Contacts
MAILBAG
Monday, August 14, 2017
ZL2CTM's Homebrew Transceiver Project
Wow, Charlie has a lot of very cool ideas in this initial video. Some suggestions:
-- With the IRF-510 in the final, beef up the heatsink, and follow Farhan's lead by including an option for 24 volts on the drain. That would take you up to 20 watts or so (for those who are so inclined).
-- Could that Teensy SDR board work at the IF frequency? If so, consider putting it ahead of the crystal filter. This would enable us all to join the Waterfall Signal Purity Police Force.
-- I love the OLEDs too, but I found them to be noisy. I minimized the noise with shielding around the OLED and active decoupling on the power line to the AF amplifiers.
More of Charlie's work here:
https://plus.google.com/107506245856154702088
Labels:
Arduino,
New Zealand,
OLED,
SDR,
SSB
Saturday, August 12, 2017
Real-Time 3D on an OLED Display
Oh man, I thought I was so cool when I got the OLED to display 7215 kHz and other frequencies. Then I see this. What next? Real-time 3D SDR Waterfalls? On an OLED? Holograms?
From:
http://hackaday.com/2017/08/08/atmega328-3d/#more-267887
Sunday, July 2, 2017
AC9JQ's Mini Digi VFO/BFO Al Fresco with OLED (and noise test)
From Dean AC9JQ:
Just completed the VFO/BFO/Arduino/OLED module for my radio. I also have the LPF, BPF and crystal filters completed and tested. Next will be the audio amplifier and NE602 modules. I will probably build one of the NE602 modules and test things out as a DC receiver. My ultimate plan is to have the rig no more that 1"x3.5"x3". I still have a lot of "stuff" to stuff into that size of box. I'll keep you posted.
I have been able to contain the entire Arduino/Si5351/OLED into a small cube in the front. The rest of the radio has to fit on two levels in the rest of the area behind the Arduino/Si5351/OLED. I think I will build the audio section and on NE602 mixer and run it as a direct conversion first to vet out any noise or other problems. Bill, that small coax that you pointed out will really help on this build. I used a small piece as a power feed-thru and will use it to feed out the VFO/BFO signals, thanks again for that pointer.
I decided to test for noise on the TIA transceiver test bed. See the video of the results. Not too much noise. I'm only using my indoor magnetic loop for an antenna. Video is kind of sloppy, but taking off the antenna and turning up the volume shows how little noise is left in the system. Now time to stuff the rest of the radio into the tight quarters.
I purchased OLED from ebay.......
IIC interface. OLED display, no need backlight, self-illumination, the display performance is better than the traditional LCD display, also lower consumption. VCC: Power (DC 3.3 ~5v). Display Color:Blue. | eBay!
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They are nice and compact, although as time goes on, I'm sure they will be harder to read. I'm hoping to have an alfresco version in a week or two. I used much of Pete's code from the shirt pocket transceiver upgrade, modified the code to address the smaller display and add USB/LSB capabilities.
73's Dean AC9JQ
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