D 2012-12-03T10:48:34.785
L Notes
P 02d929337b73b27ce8f368d6b5abbeb33cf75f64
U jfk
W 1151
Original Contents of file notes.txt as contained in file [http://truecard.biz/temp/PulseToTone_2012_01_22.zip|"Pulse2Tone_2012_01_22.zip"]
(Hyperlinks added by JvK)
(The PDF-file only contains a picture, which is directly stored as JPG in this repository)
main.c - source code main.h - header file Schematic_v1-0.png - adapter schematic wd_we500c-d.pdf - phone schematic Source code compiled with AVR Studio v4.18 + WinAVR for attiny45, optimization -O1. SUT_CKSEL fuse should be programmed for external 8 Mhz crystal oscillator. The converter originally designed to be mounted/wired inside the phone. It has to be connected in parallel to the phone line, but _after_ the hook switch, e.g. between terminals C and F/RR on the phone schematic. Rotary dial (all 4 wires) has to be disconnected from the phone and wired to the adapter (see schematic). The adapter is polarity sensitive. Terminal C is just a solder pad, so I ended up using L2 instead (itÂ’s a nice screw terminal).End of notes Z e657c62bf8f5f47114dac8e0dbc17a3e