Activities
Flip Dot Displays
Our new group project is the restoration (and hacking) of some electromagnetic flip-dot bus display panels. New display cases will have to be fabricated, and possibly control boards. A software interface is also needed for control over the network etc. Suggestions and contributions are welcome, see the mailing list!
What we know so far...
The display is controlled column by column, using an array of h-bridges to configure each pixel in the column The board is a generic mcu which we should be able to repurpose.
Forum with similar setup
https://forums.adafruit.com/viewtopic.php?f=8&t=21599
Demonstration of custom controller - no details provided
http://www.youtube.com/watch?v=IcN_nGvcxeU
Custom arduino controller with info
http://www.youtube.com/watch?v=k7PlNs5B3pl
Github with code and circuit (below)
https://github.com/aacarioca/FlipDotDisplayController
Documented project with similar panels
https://engineer.john-whittington.co.uk/2017/11/adventures-flippy-flip-dot-display/
- Dual 2-Bit Bistable Transparent Latch (1)
- CMOS Ripple-Carry Binary Counter/Divider (2)
- Dual Decoder/Demultiplexer (1)
- 4-16 Line Decoder/Latch (6)
- 8 ch High-Voltage Source Driver (transistor array) (6)
- 8 ch Darlington Sink Driver (6)