Digital code lock using 12F629

[shankarsha]

Hi,
I found this simple code lock for my alarm project.

**broken link removed**

Works fine but the LED glows dim during standby!!!

Any idea from PIC experts would be appreciated

 

[shankarsha]

Dear Nigel Goodwin,

I am novice to pic, help me to sort this problem out of my project.
My efforts to rectify this by anything is not worked.

 

[Gayan Soyza]

Reduce the 1K resistor to 220 ohms.

 

[shankarsha]

BINGO It's working.

But power consumption on standby is 1.2 mA which is high for my battery operated project.
Any modification on hex code would possible to solve this problem?

 

[blueroomelectronics]

Slow down the internal osc or put it to sleep.

 

[shankarsha]

BINGO It's working.

But power consumption on standby is 1.2 mA which is high for my battery operated project.
Any modification on hex code would possible to solve this problem?

 

[blueroomelectronics]

Do you have the source code?

 

[be80be]

He using a hex he down loaded from the site I say he didn't disassemble But if he did I hope he will post the code. I look at it last night and tried disassembling it it's big take some time to do. I imported to mplab I no there got to be a better way then that to disassemble.

 

[shankarsha]

Hex code can be download here **broken link removed**

 

[Gayan Soyza]

You said the "power consumption on standby is 1.2 mA" is this with the LED on?

It is hard to adjust the disassembled code.Better use high capacity NIMH cells.

 

[shankarsha]

No, Actually the LED is off during standby but glows when a key pressed.

 

[shankarsha]

No, Actually the LED is off during standby but glows when a key pressed.

The watchdog is also off

 

[be80be]

And it's hard to add that to hex

watchdog

 

[Gayan Soyza]

Can't tune more than that.disabling built in modules doesn't make such a big different.

Try adding 330ohms resistors to pins 5,6,7 & see.I don't know much about joepinos technic regarding where the GND path follows for the switches?

 

[shankarsha]

Hi, Let me check your idea then I will PM here

 

[gaspode42]

hex to asm conversion

Hi,

I found this utility hex to asm which gave the attached conversion. Hope this helps. Utility runs under both Windows and Unix.