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README.md

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+# TiTux badge
+
+![TiTux badge](./artwork/readme-header.jpg)
+
+## board
+
+The board is designed in KiCad and uses a dual sided pcb while only using one side for the components. It features an ATtiny84 with 6 LEDs and a switch powered by a 3 V button cell. The example above was manufactured by [OSH Park].
+
+## code
+
+The challenge is to come up with your own interesting light shows, games, etc. for the badge. This repo includes a basic Arduino sketch using the [ATTinyCore] to get you started.
+
+Use some crocodile clips and an AVR ISP programmer like a standard Arduino UNO with the [ISP sketch] and a 10 μF capacitor.
+
+## licence
+
+The design and example firmware are licenced under `GPL-3.0-or-later`.
+
+[OSH Park]: https://oshpark.com/
+[ATTinyCore]: https://github.com/SpenceKonde/ATTinyCore
+[ISP sketch]: https://www.arduino.cc/en/tutorial/arduinoISP