Tag: network

Pictures of the new exhibits

Das_Netz

I finally found the time to prepare some pictures and a bit of description for the new exhibits at Das Netz @ Deutsches Technikmuseum.

>> MEMEX

>> Packet Routing

>> Fiber Optic Communication


Packet Routing @ Das Netz

Interactive exhibit at “Das Netz” in the “Deutsches Technikmuseum Berlin” – cooperation with Felix Scharstein

IMG_9223 This device shows a network of 18 nodes and 27 edges that form a model of the internet. Messages can be send betweeen 4 terminals. These messages are split into data packets that are reassembled at the receiving terminal. The routing of the packets depends on the different base speed of the connections and the current network load. Nodes (routers) can be disabled to simulate network outages.

The data flow is visualized using flip-dots (mechanical bistable display elements). A high load on the network can be experienced as a real motion with an acoustical effect.

The whole exhibit is covered under a glass panel, all 30 buttons are touch-sensitive capacitive elements.

Main controller Raspberry Pi, python-based software
Distributed controllers 31x ARM microcontroller (PSoC 4)
Data bus RS 485 (2-wire and 4-wire versions)

(All images by Bruno Torres Suñén – click image for a larger version)

IMG_9257

Terminal with input and output buffer

IMG_9233

Node detail with controller board

IMG_9239

Network with nodes and connections

>> Click here to see videos showing prototypes and the development process of this exhibit


Fiber Optic Communication @ Das Netz

Interactive exhibit at “Das Netz” in the “Deutsches Technikmuseum Berlin” – cooperation with Felix Scharstein

IMG_9186This device demonstrates data transmission over fiber optical cables. The sender unit emits light impulses when one of the buttons (0 or 1) is pressed. By sending eight bits a character is transmitted (ASCII code). A receiver unit shows the bits, the received characters and the data rate. The way of the light can be observed at the entrance and exit of the optical cable. The ASCII-code of all capital letters can be selected from a cylindrical table.

Sender PSoc 4 Microcontroller, capacitice Buttons,  high-power LED
Receiver PSoc 4 Microcontroller, phototransistor with trigger circuit, smart color display (eDIP TFT)
IMG_9202

Sender, cable and receiver

(All images by Bruno Torres Suñén – click image for a larger version)

IMG_9203

ASCII code table


Visualize Packet Routing with FlipDots

Another exhibit for the Berlin Museum of Technolgy will be a visualization of packet routing in networks. A large wall will show a network of nodes and edges, where the connections (edges) are formed by lines of FlipDots. When the visitors send data over the network there will be a lot of optical and acoustical feedback. 🙂

 

We plan to use more than 1000 dots that are connected with different RS485 bus segments and controlled by a bunch of PSoC 4 microcontrollers. Capacitive sensors will be used for user input and a lot of RGB LEDs provide visual output. The whole scene will be controlled by a python application using the networkx modules.

Pictures will be posted here soon.