kamaroman68
USA
Asked
— Edited
First I have torxis/invenscience 12vdc servos. They are powered via 12vdc and at full load draw approximately 5 amps. So first question is how much current can the new ezb4 put out via its pin header. I plan to power ezb4 with 12vdc so hence the question.
Second question is a little more complicated for me at least. So I understand the ezb4 is wifi capable. Is it possible to use for telepresence? I guess what I mean is if I'm at work on my companies network is it possible to remote into ezb and see through the robots eyes/cameras? If so how would I go about doing it? VPN? I would like to be able to do this from my iphone or Samsung galaxy 3 tablet. Anyone care to take a crack at either of these. Anxiously awaiting ezb4's arrival.
Chris
I would recommend using the Learn section of the website to reference the Data Sheet. Here is a link for your convenience: https://synthiam.com/Tutorials/Default.aspx?id=7
Yes, you can connect any TCP/IP device on the internet. If a device has the capability of communication through TCP/IP, the internet is also based on the same protocol collection. To connect TCP/IP devices through your home router, I would recommend checking the manual of your router to Open Ports for internal redirection. That means your router will send all data that is received to your router from the internet to a device that is inside your network. Your router will have a manual on how to do that, it's very easy and requires only 2 or 3 fields to enter into the router config. All routers are a little different on that setting.
You would open your router to forward ports 23 and 24 to the IP Address of your EZ-B v4.
So I looked at the learn page as I have done in the past.... The only thing I see is under wifi board digital I/O. And it says 3.3vdc ttl logic, (5v) tolerant and that it can control servos. From what I've been reading about over the course of the last few months is that the voltage in is the voltage out. So again my servos are powered via 12vdc and get there reference (white wire) probably 5vdc ttl. So my question again is if I power the board via 12vdc, what will the voltage be at the pos/neg pins on the d0- d23 header pins? 12vdc or 5vdc? And what is the allowable current to be pulled through those pins? Thanks
Digital ports will have the following;
Vcc = Vin Ground = Ground Signal = 3.3v when high.
Vin is the input voltage to the EZ-B. This can be 4.5v to 16v however 7.2v is recommended. If you put 12v in you will have 12v on the Vcc pins of each digital port.
Rich thanks for the reply, but at 12vdc what is the allowable maximum current that the traces will handle? The servos are rated at 5 amp under full load. There will never be a "full" load as these 2 servos are for pan and tilt at the neck joints. Thanks again.
Should I just use an "external" source for the 12vdc?
Regardless of the individual pin amp output...If you're pulling a full 5amps per servo then you would be limited to 4 servos as the main fuse of the V4 is rated at 20amps
***edit *** I see you're only using 2 servos... so the 20amp restriction wouldn't affect you....
One other thing all of the wires on these servos are the same gauge approximately 20 gauge so I don't think they are going to use much current. Thanks Chris
Electrical details are included on the datasheet https://synthiam.com/Tutorials/Default.aspx?id=7
Maximum current is in the table near the top of the datasheet.