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Step 7Make it: RTC
Now, let's add the Propeller's 5Mhz crystal (at Xo and Xi). The Prop needs the crystal to run at 80mhz, which is required to do wav playback.
Add the DS1307, connecting it to P29 and P28, the same pins as the eeprom. Also add the watch crystal to the DS1307's P1 and P2.
Optionally, you can give the DS1307 a battery backup by either connecting a 3v battery to P3, or using a super cap and diode. The super cap will charge up whenever the power is applied to the circuit, and the small diode will make sure it only discharges to the DS1307 (instead of powering the entire circuit)
Add the DS1307, connecting it to P29 and P28, the same pins as the eeprom. Also add the watch crystal to the DS1307's P1 and P2.
Optionally, you can give the DS1307 a battery backup by either connecting a 3v battery to P3, or using a super cap and diode. The super cap will charge up whenever the power is applied to the circuit, and the small diode will make sure it only discharges to the DS1307 (instead of powering the entire circuit)
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