Hello everyone, I recently bought a time of flight module on with qwiic/stemma qt capabilities, was able to find the wiring order pinout for the module but haven't found clarification of the wire ordering on the Arduino uno r4 wifi can anyone explain to me using numbers 1-4 what is ground , 3.3v , SDA , and SCL
Presumably, you actually mean, where on the Arduino do I connect those named pins from the sensor?
GND is just .... GND.
3.3 is a 3.3 volt output for light 3.3 volt loads.
SCL and SDA are used for the I2C bus devices. Note their origin is A4 and A5!
Guys I know I connect to the qwiic plug , what I need to know does gnd start at the 4 or does it start at the 1?
The 4 or the 1 of what?
The Arduino qwiic plug , I numbered them top to bottom
See reply #3
Yes understand, thanks railroader. On my photo is gnd pin on the 1 or is it at the 4?
See reply #8
The image is from Sparkfun, who AFAIK started the Quiic connector.
I assume the other manufacturers are using the same wiring scheme.
The image is the top view of the board.
Leo..
1 Like
Yes I see it. Aarg you don't understand my question. It's very simple maybe too simple it's confusing people. I guess gnd is at 1 of my picture and scl is at 4. Was just curious about the wiring order on the qwiic plug in the Arduino uno r4
They would of course follow an industry standard, even if it's somewhat new and proprietary. Also it would be detailed in the R4 docs.
Always go to original source documentation for answers to questions like this.
Sure , I wanted to double check and not assume the industry standard, don't want to destroy my module.
So, you have already read the R4 docs? What did they say?
Page 14 of the Uno R4 datasheet.
Leo..
I did check it out , I didn't see a direct answer, Wawa can you tell me if this says gnd is on the top or the bottom. I'll assume it's industry standard gnd is on the left side. I have SH1.0 wires and qwiic connectors then I'm connecting each individually I don't have the standard qwiic wires that's why this question is important to me
In all fairness, that diagram is unclear. Needs improvement. You're vindicated. But I think the small square dot on the silkscreen would be pin 1.
The QWIIC connector uses a separate I2C bus (Wire1).
Another thing that's unclear in the dayasheet.
Page2 states that there is only one I2C bus.
Leo..