[OpenTRV-dev] OT: replacement of danish char's inside a word

[Adrian Godwin]

On the NPN circuit, the relay is driven from 5V. But your PNP circuit is
fine if the top connection is 3v3.



On Wed, Mar 19, 2014 at 9:01 PM, Adrian Godwin <EMAIL ADDRESS HIDDEN> wrote:

> Yes, fine if it's an electronic buzzer. If it's electromechanical then you
> need the diode.
>
>
>
> On Wed, Mar 19, 2014 at 8:58 PM, Bo Herrmannsen <EMAIL ADDRESS HIDDEN>wrote:
>
>> been following this pic
>>
>>
>> http://3.bp.blogspot.com/_c8EartLqdVs/TNQ-7InWxaI/AAAAAAAAAmo/ICttrtFaPlw/s1600/PNP+Driver.bmp
>>
>> replaceing the relay coil with the buzzer and leaving out the diode
>>
>>
>> Den 19/03/2014 kl. 20.09 skrev Adrian Godwin:
>>
>> I wouldn't. That buzzer takes 30mA and the pi pins are rated at 16mA.
>>
>>
>>
>> On Wed, Mar 19, 2014 at 6:52 PM, Bo Herrmannsen <EMAIL ADDRESS HIDDEN
>> > wrote:
>>
>>> I have seen guides where they attached one direct...
>>>
>>> but of course a 3V one is needed...
>>>
>>> http://www.tandyonline.co.uk/miniature-3-3v-pcb-buzzer.html
>>>
>>>
>>>
>>> Den 19/03/2014 kl. 19.17 skrev Adrian Godwin:
>>>
>>> A GPIO pin won't drive a buzzer. Needs a transistor at least.
>>>
>>>
>>> On Wed, Mar 19, 2014 at 5:34 PM, Bo Herrmannsen <
>>> EMAIL ADDRESS HIDDEN> wrote:
>>>
>>>> yeah....
>>>>
>>>> a buzzer with 2 terminals cant be more simple... one terminal to gnd
>>>> and one to a GPIO pin... ie pin 15 or GPIO 22
>>>>
>>>>
>>>> Den 19/03/2014 kl. 18.30 skrev Stuart Poulton:
>>>>
>>>> I going with the keep it simple approach.
>>>> On 19 Mar 2014 17:25, "Bo Herrmannsen" <EMAIL ADDRESS HIDDEN>
>>>> wrote:
>>>>
>>>>> to big.... it will not fit... its the buzzer only i need
>>>>>
>>>>>
>>>>> Den 19/03/2014 kl. 17.50 skrev Stuart Poulton:
>>>>>
>>>>> How about this
>>>>>
>>>>> http://shop.pimoroni.com/products/pibrella
>>>>> On 19 Mar 2014 14:32, "Bo Herrmannsen" <EMAIL ADDRESS HIDDEN>
>>>>> wrote:
>>>>>
>>>>>> Figured it....
>>>>>>
>>>>>> Now where do i find a buzzer for 3.3V that does not overload the Ras
>>>>>> Pi's GPIO pins?
>>>>>>
>>>>>>
>>>>>>
>>>>>> Den 18/03/2014 kl. 14.14 skrev Bo Herrmannsen:
>>>>>>
>>>>>> > Hi
>>>>>> >
>>>>>> > anyone that can help me out with php?
>>>>>> >
>>>>>> >
>>>>>> > i need to replace some special danish char's with something else.
>>>>>> This should happen no matter where they pop up.
>>>>>> >
>>>>>> >
>>>>>> > $string = $row['delivery_street_address'];
>>>>>> >
>>>>>> > $patterns = array();
>>>>>> > $patterns[0] = '*å*';
>>>>>> > $patterns[1] = '*æ*';
>>>>>> > $patterns[2] = '*ø*';
>>>>>> >
>>>>>> >
>>>>>> > $replacements = array();
>>>>>> > $replacements[3] = '/x7D';
>>>>>> > $replacements[2] = 'X';
>>>>>> > $replacements[1] = '/x7C';
>>>>>> >
>>>>>> > echo preg_replace($patterns, $replacements, $string);
>>>>>> >
>>>>>> >
>>>>>> >
>>>>>> > the address in this case is: Sandkæret 1,1,1
>>>>>> >
>>>>>> > but these 3 letters can pop up anywhere in any numbers
>>>>>> >
>>>>>> > all help is welcome :-D
>>>>>> >
>>>>>> >
>>>>>>
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