I'm just working on a clock using these displays (or ones which look the same but made by / badged Burroughs).
If you take one apart - do you end up with a bunch of bulbs pushed in to a plate?
The ones I have certainly do.
I've just pulled the bulbs and plugged in LEDs (it was that simple), job done.
By changing the incandescent bulbs to LED I trade authenticity for functionality, robustness and longevity!
Now I have a board with a Wemos Micro , shift registers and buffers which will control 6 of them. The boards arrived this week and I hope to build one up at the weekend.
ULN2803 this side, 595's on the back, screw terminals to connect to each display with series resistors for each LED, connections for power, PIR, temp/pressure sensor
I'll report progress as and when it happens.
- Richard
On Friday 1 November 2024 at 04:37:02 UTC gregebert wrote:
I recently made a clock with similar displays from IEE. I'm worried about filament stress, so I dont run the seconds for more than a minute at-a-time. I also have pre-heating , cool-down, and current-limiting so that the filaments never get a current-surge at turn-on. Time will tell if they last a long time.
On Thursday, October 31, 2024 at 4:32:13 PM UTC-7 Ron Walsh wrote:
That is a very cool tube. Never seen those before. Great score there Senk Ju.
Ron
...Semper Fidelis...
Probably pretty difficult.
These displays contain hundreds of tiny lenses that focus light differently based on the angle at which it strikes them, thereby forming the digits. One of the displays seems to have a defect, which I believe may be due to a slightly misaligned lens plate.
![defect.jpg]()
Nicholas Stock schrieb am Donnerstag, 31. Oktober 2024 um 23:54:03 UTC+1:
Super cool! I wonder how easy they would be to recreate...
I just wanted to share some pictures of these Omni Ray M40 displays I picked up six of recently for an absolute bargain.
I haven’t found any specific information about this model online, but I did come across details on the closely related SD12, including its method of operation, on this site:
SD12W (Omni Ray) Sphericular Optic Display.
These displays operate on just 14 volts, compared to the SD12’s 28 volts, and have a PCB backplate.
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