By popular demand, I added time setting capabilities to BookClock. Time and date can now be set from two buttons, called "Menu" ("H/M" in the photo) and "Plus" ("+").
Press "Menu" to select between hours and minutes. Press "Plus" to increment the blinking selection. When done, just let it time out (about 4 seconds) and the time will be saved in the RTC.
Hold down "Menu" until the date, formatted as yy/mm/dd, is displayed. Press "Menu" again to select either year, month or day, then press "Plus" to increment the blinking value.
The time-setting code is copied and adapted from IllyClock and uses the same state-machine mechanism.
I connected the two buttons to D16 ("Plus") and D17 ("Menu").
The code, compilable on both Arduino 23 and 1.0, can be downloaded from here.
Pressure sensors need as little as 0.9 V
8 hours ago