Original from CCC, let's try to compile with sdcc for it.

https://events.ccc.de/camp/2007/Fahrplan/attachments/1337-Sputnik%20Slides

The OpenBeacon Tag consists of

    nRF24L01 2.4GHz transceiver (1/2MBps)
    PIC16F684 PIC14 microcontroller

Schematics

pinout

(same as pickit)

1 VPP/RA3 (Square pin)
2 VDD
3 GND
4 ICSPDAT/RA0
5 ICSPCLK/RA1 (also connected to touch sensor)
6 PGM (seems to be unconnected)

PicKit 2

pi@rpi2 ~ $ git clone https://github.com/psmay/pk2cmd
pi@rpi2 ~ $ cd pk2cmd/pk2cmd
pi@rpi2 ~/pk2cmd/pk2cmd $ make linux

pi@rpi2 ~/pk2cmd/pk2cmd $ ./pk2cmd -P
Auto-Detect: Found part PIC16F684.

# power on target of pickit 2 which is sputlink tag
pi@rpi2 ~/pk2cmd/pk2cmd $ ./pk2cmd -PPIC16F684 -T

Source

dpavlin@klin:/rest/cvs$ git clone https://github.com/meriac/openbeacon

archival links

• https://web.archive.org/web/20111119165129/http://www.openbeacon.org/dl/23C3/OpenBeacon.pdf