## Search found 26 matches

Tue Nov 05, 2019 8:16 pm
Forum: General discussion
Topic: Interfacing FPGA with my raspberry Pi !
Replies: 5
Views: 829

### Re: Interfacing FPGA with my raspberry Pi !

mark3112 wrote:
Tue Nov 05, 2019 1:22 pm
SPI works for me using a pair of shift registers. I have two 8 bit output latches and switch between them when data is being sent. That way one can be loaded whilst the other is live on the shift register.
Can you explain more ?
Tue Nov 05, 2019 11:09 am
Forum: General discussion
Topic: Interfacing FPGA with my raspberry Pi !
Replies: 5
Views: 829

### Interfacing FPGA with my raspberry Pi !

Good morning, I'm working on a complicated project using Raspberry Pi, I've done the biggest part of the project and all i need now is adding some tricks image processing inside ! and since the raspberry pi isn't good in dealing with images and frames as well (speed problem). I was wondering if ther...
Wed Feb 22, 2017 12:44 am
Forum: Beginners
Topic: Convert NMEA sentence Lat and Lon to Decimal Degrees
Replies: 4
Views: 13367

### Re: Convert NMEA sentence Lat and Lon to Decimal Degrees

Perfect and very detailed reply, thank you very much So... Lat : 3137.36664 becomes 31 degrees and 37.26664 seconds = 31 + 37.36664/60 = 31.6227773 Lon : 00212.21149 becomes 2 degrees and 12.21149 seconds = 2 + 12.21149/60 = 2.20352483 So as latitude is in format DDSS.SSSSS DD = int(float(Lat)/100) ...
Tue Feb 21, 2017 11:33 pm
Forum: Beginners
Topic: Convert NMEA sentence Lat and Lon to Decimal Degrees
Replies: 4
Views: 13367

### Convert NMEA sentence Lat and Lon to Decimal Degrees

Hi freinds, i have this python code, using NMEA sentence (\$GPRMC) i need to convert the latitude ang longitude to decimal degress, The details are in this link : http://notinthemanual.blogspot.com/2008/07/convert-nmea-latitude-longitude-to.html import serial ser = serial.Serial('/dev/ttyUSB0', 9600,...
Mon Feb 20, 2017 12:54 pm
Forum: Beginners
Topic: Combine two python code
Replies: 6
Views: 2059

### Re: Combine two python code

Yes i want to send GPS data in an SMS message Well, I don't have any of the hardware you're using (except for maybe the Pi). It would probably be best if somebody familiar with the hardware you're using would chime in. But what exactly are you trying to do with the two scripts? It might seem obvious...
Sun Feb 19, 2017 10:01 pm
Forum: Beginners
Topic: Combine two python code
Replies: 6
Views: 2059

### Re: Combine two python code

No problem .. this is the GPS code, i need this code without update (while) import serial from decimal import * def find(str, ch): for i, ltr in enumerate(str): if ltr == ch: yield i ser = serial.Serial('/dev/ttyUSB0', 9600,timeout=.5) cd=1 while cd <= 50: ck=0 fd='' while ck <= 5: rcv = ser.readlin...
Sun Feb 19, 2017 6:47 pm
Forum: Beginners
Topic: Combine two python code
Replies: 6
Views: 2059

### Combine two python code

Hello,

i have two python code work perfectly, the first for gps data and the second for sending SMS through GSM modem

How can i combine the two code into one ?

Sun Feb 19, 2017 6:43 pm
Forum: Beginners
Topic: SIM808 power supply question ?
Replies: 5
Views: 1634

### Re: SIM808 power supply question ?

i'm talking about the jack connector, Not the 5v pin

Sun Feb 19, 2017 6:37 pm
Forum: Beginners
Topic: SIM808 power supply question ?
Replies: 5
Views: 1634

### Re: SIM808 power supply question ?

https://wiki.eprolabs.com/index.php?tit ... PRS_Module

this is the link of this SIM808 board
drgeoff wrote:Do you have a link to the specs for that board?
Sun Feb 19, 2017 5:48 pm
Forum: Beginners
Topic: SIM808 power supply question ?
Replies: 5
Views: 1634

### Re: SIM808 power supply question ?

the GSM input 5v to 26v ?

but the RPi UART is 3.3v, that's why i asked if this adapter can effect to the UART

Thanks

drgeoff wrote:That board appears to require 5 volts as supply. Connecting it to a 12 volt supply will very probably cause damage beyond economic repair.
Sun Feb 19, 2017 4:41 pm
Forum: Beginners
Topic: SIM808 power supply question ?
Replies: 5
Views: 1634

### SIM808 power supply question ?

Hello,

i have a GSM modem SIM808, and i want to use 12V 700mA adapter.

Does this effect to the UART or not ?

Tue Feb 14, 2017 10:42 pm
Forum: Python
Topic: Help with python script
Replies: 2
Views: 704

### Re: Help with python script

there is none to help me ?
Tue Feb 14, 2017 12:56 am
Forum: Python
Topic: Help with python script
Replies: 2
Views: 704

### Help with python script

Hello freind, I have a GPS python script, it works really good. But i need a simple script to get the GPS coordinates only once ? i want to send this coordinates through GSM modem ? Thanks a lot import serial import RPi.GPIO as GPIO import os, time from decimal import * delay = 1 GPIO.setmode(GPIO.B...
Fri Feb 10, 2017 12:15 pm
Forum: Beginners
Topic: problem with SIM900a
Replies: 4
Views: 1912

### Re: problem with SIM900a

Yes i have, the serial port is correct How can i know if the baudrate is correct, and the modem recognizes AT commands ? No error from the python code : https://mail.google.com/mail/u/0/?ui=2&ik=271429523f&view=fimg&th=15a24d4c4d202fe4&attid=0.1&disp=emb&realattid=ii_iyywv5p10_15a24d4b6b48bcd7&attbi...
Thu Feb 09, 2017 8:40 pm
Forum: Beginners
Topic: problem with SIM900a
Replies: 4
Views: 1912

### problem with SIM900a

Hello freinds, i tried to send SMS from my RPi 3, and SIM900a using UART interface and USB. i used 5V 2A for the GSM module https://i.ytimg.com/vi/louSyBRkvO4/maxresdefault.jpg When i run the python code, i don't received the SMS. import serial import RPi.GPIO as GPIO import os, time GPIO.setmode(GP...
Mon Dec 19, 2016 12:07 pm
Forum: Beginners
Topic: RS232 connection GPS module ?
Replies: 6
Views: 1045

### Re: RS232 connection GPS module ?

Mon Dec 19, 2016 12:33 am
Forum: Beginners
Topic: RS232 connection GPS module ?
Replies: 6
Views: 1045

### RS232 connection GPS module ?

I have NEOM6V2 GPS module and SIM900A GSM modem without DB9 outputs and i want to make MAX232 board to connect these devices with my RPi 3 http://img.dxcdn.com/productimages/sku_251973_1.jpg http://img.dxcdn.com/productimages/sku_422159_1.jpg this video project use MAX232 board to connect GPS and GS...
Mon Dec 19, 2016 12:12 am
Forum: Beginners
Topic: Two serial devices on raspberry pi ?
Replies: 2
Views: 607

### Re: Two serial devices on raspberry pi ?

Thank you
Douglas6 wrote:Yes, that shouldn't be a problem.
Sun Dec 18, 2016 11:48 pm
Forum: Beginners
Topic: Two serial devices on raspberry pi ?
Replies: 2
Views: 607

### Two serial devices on raspberry pi ?

hi freinds,

i want to connect SIM900A GSM modem to my RPi 3 via normal UART, and NEOM6V2 GPS module via USB connection using FTDI adapter in the same time ? is that possible or not ?

Mon Dec 12, 2016 11:27 am
Forum: Beginners
Topic: FTDI ( USB to TTL ) Questions ?
Replies: 3
Views: 903

### Re: FTDI ( USB to TTL ) Questions ?

Salut,

La photo c'est juste un exemple sur la connexion FTDI, Moi j'ai besoin de contrôler un module GSM et GPS avec la raspberry Pi3

La RPi 3 possède un seul UART donc je dois trouve une solution ?
Mon Dec 12, 2016 12:36 am
Forum: Beginners
Topic: FTDI ( USB to TTL ) Questions ?
Replies: 3
Views: 903

### FTDI ( USB to TTL ) Questions ?

Hi, I need some informations about FTDI adapter with FT232RL to interface GSM or GPS sheild http://4.bp.blogspot.com/-KJrbuZWMw7I/U6yOt_BxclI/AAAAAAAAE_Y/WOd1gHu-1fs/s1600/Android-EZ-Link-FTDI-Raspberry.jpg I also need to know if i can use UART output to interface GSM with my RPi and FTDI to interfa...
Sun Dec 11, 2016 8:40 pm
Forum: Beginners
Replies: 0
Views: 257

hello freinds,

I have GSM SIM900a without RS232 cenncetion (DB9).
How i can associate it with raspberry pi 3 via RS232 link ( MAX232 or MAX3232 ) !?
Fri Dec 09, 2016 1:50 am
Forum: Beginners
Topic: About UART and MAX232 !
Replies: 8
Views: 1686

### Re: About UART and MAX232 !

you mean this USB-TTL ! http://www.tunisia-store.com/248-large_default/convertisseur-usb-ttl.jpg Not really. Just use two USB->serial it is by far the easiest way to go. One RS232 board enough to USE Two UART connection ! I use the uart on the Pi a LOT (for my RoboPi product), and I'd love it if the...
Fri Dec 09, 2016 12:18 am
Forum: Beginners
Topic: About UART and MAX232 !
Replies: 8
Views: 1686

### Re: About UART and MAX232 !

One RS232 board enough to USE Two UART connection ! I use the uart on the Pi a LOT (for my RoboPi product), and I'd love it if there was a second accessible uart on the GPIO pins, but there is not. You could use a MAX3232 to make ONE RS232 board with a DB9 connector, however it is far cheaper and ea...
Thu Dec 08, 2016 9:38 pm
Forum: Beginners
Topic: About UART and MAX232 !
Replies: 8
Views: 1686

### Re: About UART and MAX232 !

No one can help me !?