Ytai, thanks for the feedback. The cable is shielded and the wires are solid with quite thick diameter but the length is approx. 50 m (54 yards) so perhaps that will be I problem. Since I don't have any specific requirements on reading out the images from the sensor quickly, the baud rate can be set at lowest possible (9600) which might help. But if the cable length turns out to be a problem a RS-422 link seems to be a simple but good solution.
I ended up ordering this specific sensor which has a serial TTL interface: http://www.aliexpress.com/store/product/UART-TTL-JPEG-serial-port-camera-module-OV528-communication-protocol-SPI-camera/1147396_1968783102.html My first step is to plug it into a computer using a USB-to-TTL adapter cable and with a terminal emulator get familiar with the camera's protocol (new link): http://www.synes.co.th/nicupload/20120302120132.pdf /JP The link you sent is dead. A serial link would not work well over long > wires. You'd probably need transceivers on both ends (e.g. RS-422). > Another, possibly simpler, option is to put the actual phone on the pole > (with some weather-proofing) and just run power up there. That way you can > use the phone's camera which would be a lot easier. > > On Wed, Oct 1, 2014 at 9:57 AM, JP <[email protected] <javascript:>> > wrote: > >> I have developed an anemometer and the sensors are placed on a pole next >> to the water front. The signals are transmitted through a long cable to the >> club house where the IOIO module and Android are. The wind direction/speed >> are sampled each minute and sent from the Android using GPRS to my web >> server for storage in a database and presentation as a graph and table in a >> web page. >> >> My idea is to add an image sensor and take a single picture of the lake >> once in a while a publish it on the web page as a supplement so the members >> of the club can get an idea of the conditions, e.g. waves, other surfers >> etc. >> >> The JPEG sensor I'm looking at (see the link in the previous post) uses a >> camera-to-serial bridge called OV528 which utilizes a 6 byte command and >> acknowledge protocol (see description <http://goog_1043113688>). >> >> From what I have learned so far I think it should be doable. >> >> /JP >> >> >> >>> That looks pretty challenging. :) I guess you would be attempting to >>> perform RS232 through the IOIO and send the data to your Android device? >>> And try to render the resulting video stream (which is encoded somehow) on >>> the cellphone screen? It sounds like a rabbit hole to me. >>> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "ioio-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at http://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
