Getting the signal in digital form... the UDR program !
click here to see the setup & first trial
I connected a multimeter at the wires of the buzzer.
The signal is 3.0=V max.
Here is a cropped vestapro webcam movie (500Ko) of a transit just before the Sun was hidden.
Now how to get thoses data into the PC in usable form ?
Gilbert Grillot and I have decided to develop "ODRSoft ™, Optical Digit Recognition" program to be used to acquire/save/plot any digital values on any apparatus in the World from a standard/timelapse video recording as above movie. The program is now even working on a live signal at more than 5 fps !
Below is a first recording of a solar transit :
The Moon transit was a goal more difficult than the Sun transit but I succeeded !
3)Eventually an electronic
interface could be used to record the signal
May be the cheap one described at http://radio.meteor.free.fr/electro.html
Signal accepted : 0 - 2V or less which could work nicely with the buzzer signal.
See Original RAMEAU : https://www.ias.u-psud.fr/dole/rameau/