hi guys,
it appears incompetent Steve has struck again, are there any max232s at the space?
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.
Cheers
AlexOn 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:
hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
Yeah the problem I have is the sim300 gsm modem uses 3.7v for comms and it
isn’t 5v tolerant. Apparently people haven’t had any problems running it at
5v but best be safe than sorry.
AFAIK the only choice I have is to use an max232 on top of the on-board one
to convert rs232 to 5v.On 13 November 2013 07:33, Alexander Lang alexanderlang1980@gmail.comwrote:
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.Cheers
Alex
On 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
Probably best to use a 5V tolerant device
AlexOn 13 Nov 2013 08:05, “Steven Choi” swchoi.choi@gmail.com wrote:
Yeah the problem I have is the sim300 gsm modem uses 3.7v for comms and it
isn’t 5v tolerant. Apparently people haven’t had any problems running it at
5v but best be safe than sorry.
AFAIK the only choice I have is to use an max232 on top of the on-board
one to convert rs232 to 5v.On 13 November 2013 07:33, Alexander Lang alexanderlang1980@gmail.comwrote:
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.Cheers
Alex
On 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google
Groups “Hackspace Manchester” group.
To unsubscribe from this group and stop receiving emails from it, send
an email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
A max232 is for converting 5v serial to 15v serial (rs232) you want a
buffer chip of some sort.
I have sent 4050 hex non inverting buffers at the space which will work,
but they’re SOIC.On 13 Nov 2013 08:05, “Steven Choi” swchoi.choi@gmail.com wrote:
Yeah the problem I have is the sim300 gsm modem uses 3.7v for comms and it
isn’t 5v tolerant. Apparently people haven’t had any problems running it at
5v but best be safe than sorry.
AFAIK the only choice I have is to use an max232 on top of the on-board
one to convert rs232 to 5v.On 13 November 2013 07:33, Alexander Lang alexanderlang1980@gmail.comwrote:
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.Cheers
Alex
On 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google
Groups “Hackspace Manchester” group.
To unsubscribe from this group and stop receiving emails from it, send
an email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
I hadn’t considered that…daft seeing as I use the same trick for SD cards
all the time!
There is a TTL version of the 4050 and look at 74ls07 also
Alex
A max232 is for converting 5v serial to 15v serial (rs232) you want a
buffer chip of some sort.
I have sent 4050 hex non inverting buffers at the space which will work,
but they’re SOIC.On 13 Nov 2013 08:05, “Steven Choi” swchoi.choi@gmail.com wrote:
Yeah the problem I have is the sim300 gsm modem uses 3.7v for comms and it
isn’t 5v tolerant. Apparently people haven’t had any problems running it at
5v but best be safe than sorry.
AFAIK the only choice I have is to use an max232 on top of the on-board
one to convert rs232 to 5v.On 13 November 2013 07:33, Alexander Lang alexanderlang1980@gmail.comwrote:
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.Cheers
Alex
On 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google
Groups “Hackspace Manchester” group.
To unsubscribe from this group and stop receiving emails from it, send
an email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
I was looking at http://uk.farnell.com/jsp/search/productdetail.jsp?SKU=2164732
as a way of translating low voltage levels.On 13 November 2013 08:05, Steven Choi swchoi.choi@gmail.com wrote:
Yeah the problem I have is the sim300 gsm modem uses 3.7v for comms and it
isn’t 5v tolerant. Apparently people haven’t had any problems running it at
5v but best be safe than sorry.
AFAIK the only choice I have is to use an max232 on top of the on-board one
to convert rs232 to 5v.On 13 November 2013 07:33, Alexander Lang alexanderlang1980@gmail.com wrote:
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.Cheers
Alex
On 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:
hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.
Ben Dooks, http://www.fluff.org/ben/ bjdooks@googlemail.com
so do u mean I put the chip on the.modem itself and just ignore the rs232 part? the datasheet does say its 3v TTL. Alex would it work. if I use 3.3 v instead ? just curiousAlexander Lang alexanderlang1980@gmail.com wrote:
I hadn’t considered that…daft seeing as I use the same trick for SD cards
all the time!There is a TTL version of the 4050 and look at 74ls07 also
Alex
A max232 is for converting 5v serial to 15v serial (rs232) you want a
buffer chip of some sort.I have sent 4050 hex non inverting buffers at the space which will work,
but they’re SOIC.
On 13 Nov 2013 08:05, “Steven Choi” swchoi.choi@gmail.com wrote:Yeah the problem I have is the sim300 gsm modem uses 3.7v for comms and it
isn’t 5v tolerant. Apparently people haven’t had any problems running it at
5v but best be safe than sorry.
AFAIK the only choice I have is to use an max232 on top of the on-board
one to convert rs232 to 5v.On 13 November 2013 07:33, Alexander Lang alexanderlang1980@gmail.comwrote:
Unfortunately not…unless someone specifically has some. I personally
don’t use RS232 comms anymore.Cheers
Alex
On 13 Nov 2013 07:07, “gmail” swchoi.choi@gmail.com wrote:hi guys,
it appears incompetent Steve has struck again, are there any max232s at
the space?–
You received this message because you are subscribed to the Google
Groups “Hackspace Manchester” group.
To unsubscribe from this group and stop receiving emails from it, send
an email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups
"Hackspace Manchester" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.–
You received this message because you are subscribed to the Google Groups “Hackspace Manchester” group.
To unsubscribe from this group and stop receiving emails from it, send an email to hacman+unsubscribe@googlegroups.com.
To post to this group, send an email to hacman@googlegroups.com.
Visit this group at http://groups.google.com/group/hacman.
For more options, visit https://groups.google.com/groups/opt_out.