
seigezapf

Hello,
I am sure a simple question, but I can't seem to find the answer. The EZB-4 info states:
"Each port has 3 pins, which are Gnd, VCC and Signal. The Gnd and VCC are for powering the device connected to the port. The Signal pin is connected to the EZ-B Microchip for reading or writing data from Digital or ADC. The Gnd and VCC pins are not connected to the Microchip, they are used only for powering the peripheral connected to the EZ-B v4.
For example, a servo has a 3 wire plug that connects to one of the EZ-B Digital Ports. The wires of a servo connector are Gnd, VCC and Signal. The Gnd and VCC provide power to the servo's motor and circuit. The Signal wire carries the information to tell the servo what position to move."
OK, got that. But which pins are which. I believe ground is black, Then is VCC white or red? Thanks. I'm guessing white.
Alan
thats correct .black is gnd
vcc is red and white is signal
where the power pins are labeled, and I am sure it is somewhere else, but yeah, not obviously mentioned anywhere.
Alan
That being said, with higher amp batteries, you do need to be careful with the "hot" end to prevent sparks and shorts. 12V can cause a nasty skin burn or an exploding battery at 19 amps....
Alan
With that said I wouldn't expect someone to attach a device drawing that much amperage to a 3.3 volt ADC, Uart or i2C power port. I don't think they even exist. However it's very possible someone would try to connect a larger motor to the Digital ports (like a big servo). Heck I did it. That's how I found out the EZB will brown out. I'm just trying to pass along personal experience, not book learning.
BTW, a comparison I like to use for electrical theory is it's like water in a pipe:
*The water is the current (amps). It does the work.
*Pressure behind the water is the voltage. It pushes the water along.
*The pipe is the conductor (wire, connectors or traces) and needs to be the proper size and type (resistance) . It carries the water along through the pipe that the pressure is pushing.
Hey, that sounds a lot like Ohms Law.
Also, I make no apologies for working hard, staying out of debt, spending wisely and investing... I recommend everyone do it....
I actually might have a part time gig at the local College where I live... If you can believe it they are offering a 8 week course in commercial roofing.... Being self employed in construction and inspection for the last 25yrs I thought... hey why not.. extra robot money... LOL