Thank you Perry, your answers are clear and to the point. Though they lead me to ask this.I have 1 SDA connector on the Feather and I need to connect it to both VCC and the SDA on the slave device.Doesn't that describe a parallel circuit ?
From the Adafruit PCA9685 page,Try it and come back if you have any problem.
You don't ever connect SDA directly to Vcc; how would you pull it down if you did?
Referring to the sketch at post 17( I think), VDD (5V+), is connected to SDA.
Where on here is SDA connected to Vcc?
Its not and I had gotten your explanation all wrong
Referring to the sketch ( I think), VDD (5V+), is connected to SDA.
Now you are contradicting yourself because right after you say it's not you go on to saySo again, where in that sketch is Vdd connected to SDA?Without wishing to cause offence, you've been told multiple times how to do this but you keep asking the same question, I am beginning to think you are behaving like a troll.
As mentioned before, your boards are MOS so Vcc does not apply,Also, "Vdd" and "Vcc" are generic terms that represent whatever power supply you are using.
QuoteQuoteSo, how do i tell the circuit (?), that the Arduino is the master?On the Arduino you useCode: [Select]Code: [Select]Wire.begin();
So, how do i tell the circuit (?), that the Arduino is the master?
And here is another diagram that seems to contradict what y'all are saying. That VDD is not V+ ((((SOMETIMES)))
I resent being called a troll.
Where on here is SDA connected to Vdd?
I get that you think VCC, VDD, and V+, 5V+ are the same, I have not commented on it because for the purposes of this discussion it does not matter.
Ok, it seems you need very specific advice.You don't ever connect SDA directly to VDD, VDD, VCC, Vcc, +5V, + 3V, +3.3V, +1.8V +ve supply or Gnd,How would you pull it down if you did?To connect more than one device to SDA (and SCL of course) you make sure the devices don't have the same address, then you connect all the SDA (and SCL) lines together, and make sure that SDA is pulled up, and that SCL is also pulled up And no, you can't use a single resistor to pull up both.
and make sure that SDA is pulled up, and that SCL is also pulled up