can anyone explian why on our ssc-32 that the digital input pins read as follows:
pin A+ = 5volts
pin A- = 5volts
pin B+ = 5volts
pin B- = 0volts
pin C+ = 5volts
pin C- = 5volts
pin D+ = 5volts
pin D- = 0volts
all measurements are in respect to terminal VS1 ground
the relpies on my last post were very helpful and we can get inputs on B, D, to work the way they were explained. Yet not on A, C, thanks
There are no A-, B-, C- or D- inputs. There are only 4 input pins. They are labled A,B,C, and D and are closest to the Atmel chip. The + and - marked pins are +5vdc and ground. They are there for use if you need them.
There’s only 4 input pins on SSC-32 Card they are named A,B,C and D, the 4 +, -, +, - pins above the inputs are just here to furnish 0V or +5V in order to use them to feed an electronic sensor (a + pin…5V and a - pin …0V) or to plug a mechanical sensor (a switch) ground (the - pins 0V)
for example, if you want to use a Sharp GP2D12 IR sensor on analog input ‘A’ :
- plug the IR sensor red wire to one of the two SSC-32 + pins
- plug the IR sensor black wire to one of the two SSC-32 - pins
- plug the IR sensor yellow wire to the SSC-32 ‘A’ pin
read the result with the SSC-32 command ‘VA’
the two + pins above the inputs gives regulated 5V, use only this pins to plug sensors, don’t use one of the 32 servos + pins because the voltage is ‘direct’ from the Accus Pack (4.8V, 6V or 7.2V) and the current is not limited (a little shortcut could burn a sensor)
if you want to use a ‘switch’ sensor on digital input ‘A’:
- plug a switch pin to the SSC-32 ‘A’ pin
- plug the second pin of the switch to one of the two SSC-32 ‘-’ pins
read the result with the SSC-32 command ‘A’
because the SSC-32 use internal pull up resistor, the SSC-32 ‘A’ command (to read the input ‘A’ as digital) return ‘1’ if nothing is connected, if the ‘A’ pin is connected to ‘-’ (when pushing your connected switch) it return ‘0’.
i hope it help