Probably a minor thing, but the text describing the tropo monitor doesn't say which digital pins to connect the transistor outputs too, but the code specifies pins 7 & 9. The Fritzings-generated pictures show 9 & 12. Probably not a big deal and it's probably easier to update the code in the repo than the text, but it would probably be helpful to note that the important thing is to be sure that the code matches however you wire the gadget.
Probably a minor thing, but the text describing the tropo monitor doesn't say which digital pins to connect the transistor outputs too, but the code specifies pins 7 & 9. The Fritzings-generated pictures show 9 & 12. Probably not a big deal and it's probably easier to update the code in the repo than the text, but it would probably be helpful to note that the important thing is to be sure that the code matches however you wire the gadget.