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--- wiki:v2:powering_pixy [2018/05/24 22:14]
pixycam [I/O connector]
+++ wiki:v2:powering_pixy [2018/05/24 22:26]
pixycam [Unregulated power]
@@ Line 29: / Line 29: @@
-==== Power connector ====
+==== Unregulated power ====
-The power connector is marked "JP1" on Pixy's PCB. Although we totally expect that 90% of Pixy users to use the first two choices (above), we've included a third choice -- an unregulated power input. Because we love it when we feel taken care of, and we've taken care of you, unregulated Pixy power person.
+The I/O connector has an unregulated power input (Vin, pin 10).  You can provide between 6V and 10V to this input and Pixy2's linear regulator will create the 5V power rail.
-It is recommended that you use this option if you plan on using the pan/tilt unit with Pixy and an Arduino (and no USB cable). In this case, **Pixy is sourcing the power** and powering the Arduino through the Arduino cable, and **that's perfectly fine**, because Pixy can source up to 1.5A of current, which is plenty for itself, the servos and the Arduino. If you attempt to have the **Arduino source the power** and power Pixy and the pan/tilt through the Arduino cable, either the Arduino's power regulator will be overwhelmed, or you'll lose a lot of power through the cable, both of which will mean **the servos won't function** (they'll probably move to one end of their limits and buzz).
-OK, here are the pinouts and polarity of the power connector:
+Powering Pixy through Vin (pin 10) can result in more current being available for the RC-servos to use with the pan-tilt unit.  Connecting Pixy2 to an Arduino when Pixy2 is being powered through Vin results in **Pixy2 sourcing the power for the Arduino**.  This is sometimes preferable to the Arduino sourcing power to Pixy2 because the voltage regulator on some Arduinos cannot handle the current requirements of Pixy and the pan-tilt unit (two RC-servos.)
-{{wiki:img:009f85f400e62fedbfd2d8b474515f3427b6529b.jpg?400}}
-The power connector is reverse-polarity protected, so nothing bad will happen if you get things backwards. The mating connector is a polarized connector from Molex that comes in two parts:
+Some additional notes:
-  - **The housing**, Molex PN 22-01-3027, available from [[http://www.digikey.com/product-search/en?x=0&y=0&KeyWords=22-01-3027|Digikey]] and [[http://www.mouser.com/ProductDetail/Molex/22-01-3027/?qs=%2fha2pyFadujVoN8fcIRqZsMlWF6dgIQRsLjTxOPvJ04%3d|Mouser]]
-  - **The crimp pins**, Molex PN 08-50-0113, you'll need at least 2 of them, also available from [[http://www.digikey.com/product-detail/en/0008500113/WM1114CT-ND/467980|Digikey]] and [[http://www.mouser.com/ProductDetail/Molex/08-50-0113/?qs=sGAEpiMZZMs%252bGHln7q6pm%252bS0pk2Wo0Xxry%2f2CCsvuc0%3d|Mouser]]
-It is safe to connect Pixy to a computer via USB while powered using this method.
+  * Vin (pin 10) of the I/O connector is reverse-polarity protected, so nothing bad will happen if you get things backwards.
+  * It is safe to connect Pixy2 to a computer via USB while Pixy2 is powered through Vin.

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