How to attach additional modules?

[viss02]

Hello,

I need to build a system with raspberry PI.
This system need to have GPS module, USB webcam attached, and temperature sensor that uses TTL for communication with other devices.

What components I really need for this?
Does I need some additional board that is used to attach these modules to raspberry PI?

Thanks

[texy]

Hi and welcome to the forum.
You haven't given us much to go on. You mention 'temperature sensor that uses TTL for communication with other devices', so is this a 3.3 volt or 5v device? It needs to be 3.3v for the Pi. There are different GPS modules, for example, some that are a usb 'dongle' type, others that connect to the serial UART
of the Pi. As you may be using the UART for the temperature sensor, you may be restricted to use a USB GPS type.
Lastly the USB webcam - why not try the PiCam - do you have to use a USB webcam?
Texy

[viss02]

I hope that it's not forbidden to post links here

http://www.ebay.com/itm/GPS-Add-on-GPS- ... 1622548272
This is GPRS module. It uses 3.3V and UART interface.

http://www.ebay.com/itm/Temperature-and ... 1401424215
There is no much information about this sensor.

As you may be using the UART for the temperature sensor, you may be restricted to use a USB GPS type.

So, PI can't handle 2 serial/TTL devices at same time?

About canera: I know for PiCam. USB web cams are cheaper, they come in plastic housing, and it's easier to worry about 2m long usb cable instead of 2m long flat cable
Also, using analog camera (like for cctv) is not excluded as solution.

[scotty101]

So, PI can't handle 2 serial/TTL devices at same time?

Short Answer: No, the pi only has one TTL serial port.

Longer Answer: You can add extra serial ports via USB.

[viss02]

So I need these:

1 GPS module
1 Temperature sensor
1 USB to TTL adapter
1 Real Time Clock module
1 camera... PiCam or usb web camera

Is that correct ?

[ame]

So I need these:

1 GPS module
1 Temperature sensor
1 USB to TTL adapter
1 Real Time Clock module
1 camera... PiCam or usb web camera

Is that correct ?

Um, it's your project. There's no point in asking us what you need.

If you describe what the project is, and what you want it to do, we could perhaps make some suggestions.

I would use a USB GPS, a DS18B20 temperature sensor (not TTL serial), an RTC module like this (http://www.dx.com/p/ds3231-raspberry-pi ... dKFU7VdJ9M) and a USB webcam. Then the USB TTL adapter is not required. Actually, since you have a GPS, the real-time clock module is probably not required either.

[texy]

So I need these:

1 GPS module
1 Temperature sensor
1 USB to TTL adapter
1 Real Time Clock module
1 camera... PiCam or usb web camera

Is that correct ?

Um, it's your project. There's no point in asking us what you need.

If you describe what the project is, and what you want it to do, we could perhaps make some suggestions.

I would use a USB GPS, a DS18B20 temperature sensor (not TTL serial), an RTC module like this (http://www.dx.com/p/ds3231-raspberry-pi ... dKFU7VdJ9M) and a USB webcam. Then the USB TTL adapter is not required. Actually, since you have a GPS, the real-time clock module is probably not required either.

...what he said, but with a PiCam instead of the webcam. Then again you don't specify the projects aim - especially the need for the camera/webcam.
Texy

[ame]

...what he said, but with a PiCam instead of the webcam. Then again you don't specify the projects aim - especially the need for the camera/webcam.
Texy

I wasn't sure about the PiCam as OP suggested he might need a 2m cable. But then again, with no further information, he might not.