16F628 thermometer

Hi Janis...
Now I have all displays connected perfectly.

But I only have any result if I disconnect the pin 1 in PIC. If I turn on with this connection, the circuit won´t start. If I release the pin 1, we have:

1 - Can see the temperature right, it will blink 8 times.
2 - Can see: "00(fixed)00(blinking)".
3 - Ground the pin 6 and release.
4 - Can see: "00(blinking)00(fixed)".
5 - Ground the pin 6 and release.
6 - Can see: "0000(fixed)" for 20 seconds and start a cycle with temperature.

If I ground the pin 6, two right digits (minutes) starts to blink.

If I release the ground in pin 6 and ground pin 8 (increase), the minutes digits starts to blink faster, without increment.

If I release the ground in pin 8 and ground pin 6 (setup), the hours digits start to blink.

If I release the ground in pin 6 and ground pin 8 (increase), the hours digits starts to blink faster, without increment.

If I release the ground in pin 8 and ground pin 6 (setup), we have the "0000" fixed and back to 20 seconds cycle with temperature.

I try to put 4.8K in pin 4, but notting happends.

The only connection missing is with pin 10, I think that isn´t necessary to the clock work.

Maybe is only a detail to get the clock running... But I can´t find it.

Thanks.

Image

Done!

Googling for information an examples about the DS1307, all examples uses 10K resistor in pins 5 and 6 of RTC.... I change this and connect a battery! The clock is fine!

Thanks!

RafaelCamacho said:

Done!

Googling for information an examples about the DS1307, all examples uses 10K resistor in pins 5 and 6 of RTC.... I change this and connect a battery! The clock is fine!

Thanks!

Click to expand...

I am thinking about quartz connection, right grounding to the DS1307 chip.

Best regards!
Janis

Thanks Janis...

Now I want do find a project with PIC, DS1307, DS1820 that can show: day, month, year, hr, mm, sec and temperature like 2 8. 1 0 'c. (local temp now, brazil).

If somebody know about a project like, let me know.

Best!

Rafael

RafaelCamacho said:

Thanks Janis...

Now I want do find a project with PIC, DS1307, DS1820 that can show: day, month, year, hr, mm, sec and temperature like 2 8. 1 0 'c. (local temp now, brazil).

If somebody know about a project like, let me know.

Best!

Rafael

Click to expand...

Here is project with time,date and thermometer.
Digital Clock/Date/Thermometer