For testing purpose I would find useful the well-known "jumper wires" arranged in Y-form. One end (female) to two ends (females).
For example if you have two i2c sensors you would save to cut and solder 12 wires.
Is there anything on the market? What's its name?
Looking for "Y jumper cables" I found nothing...
I found these searching for "split jumper cables". Maybe not exactly what you want, but there were several other search results that I didn't check
They sure do exist, though they're pretty rare but you can find them, on amazon, aliexpress and more, but most of them are male (one pin) to female (2 pin) wires, They're called Dupont Y Cables
I use a flat ribbon cable for the bus and clip all clients on it with standard ribbon cable connectors..
if you buy a your own crimping tool then you can build the cables as you see fit...
12 wires for 2 sensors? Is this some kind of new I2C?
Sure. 4 * Servo Y cables would do it, no? Even 3 of these, since all the grounds tie together at the same place anyway.
Try "daisy chain"
Where is that DIY spirit.
The state of the "DIY spirit" is limited to ad hoc purchases of 3 and 4pin widgets from amababa. It's very limiting but I see, sadly, little ingenuity.
I normally have a +ve bus and a -ve bus, so 2 I2C would need 4 wires, BUT if I had more than 2 I2C sensors I would make an SDA and SCL bus so every sensor is then directly wired.
sure I would not use the Y wire either, I was just trying to guess where the 12 cables came from.
Sorry, I meant 4 wires (vdd, gnd, sda, scl) on Arduino side, then other 4 wires for each sensor. I cannot use the RC servo connector since unlikely the four signals are aligned in a row. Usually, you need to pick up here and there the signals on the headers.
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