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src/data/projects/ad-astra.ts

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+import adAstraWebP from '../media/ad_astra.jpg?format=webp';
+import adAstraJpeg from '../media/ad_astra.jpg?format=jpg';
+import adAstraMp4 from '../media/mp4/ad_astra.mp4';
+import adAstraWebM from '../media/webm/ad_astra.webm';
+
+import { GitHub } from '../shared';
+import { Video } from '../../page/basics/video/video';
+import { TimelineElementParameters } from '../../page/timeline/timeline-element/timeline-element';
+
+export const adAstraTimelineElement: TimelineElementParameters = {
+  title: `Gaming on an ATtiny85`,
+  date: `2020 spring`,
+  figure: new Video({
+    posterWebP: adAstraWebP,
+    posterJpeg: adAstraJpeg,
+    mp4: adAstraMp4,
+    webm: adAstraWebM,
+  }),
+  description: `
+    A simple game engine with a sample game set in space. The greatest challenge was to overcome
+    the very limited resources of the hardware, this was also the most rewarding part.
+  `,
+  more: [
+    `
+      For reducing complexity while maintaining performance, a balance had to be found between object-oriented
+      and structural programming. For example, a simple prototype-based inheritance is used for the game objects; 
+      meanwhile, an optimised SIMD utilising low-level driver is used for rendering to the display. 
+      I think, the codebase is quite readable and at the same time also fast, with the maximum frame times 
+      being between 15 and 20 milliseconds at a clock speed of 8 MHz. That means, it runs quite stably at 50-60 FPS.
+    `,
+    `
+      As for the hardware, it is quite simple. Aside from the ATtiny85V, a D096-12864-SPI7 display is used for
+      output and a TSOP4838 for input. The circuit runs on 3.3V, so a regulator is also needed. It uses a current
+      of 8mA to 11mA on full brightness and around 1.5mA on standby mode.
+    `,
+    `
+      There is also fault-tolerant persistent data storage utilising the built-in EEPROM. 
+      For creating sprites (which are also stored in EEPROM), I made a tool to convert PNG-s into C array definitions. 
+      This can also be found on GitHub along with the entire project.
+    `,
+  ],
+  links: [new GitHub('https://github.com/schmelczerandras/ad_astra')],
+};