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SmallPICO  assembly instructions:

The SmallPICO board is pre-loaded with a test sketch and it will blink all output pins including the user LED.
Before soldering 2 male headers make sure that the SmallPICO board can blink the user LED with your Arduino IDE.
If it can't, troubleshoot the problem first before going further.
If you can't blink-a-LED before soldering, you won't be able to blink-a-LED after soldering. 

  1.  Parts included in the package:

One SmallPICO board.
One 1x10 male header and one 1x10 female header, both are low profile.
One 1x12 male header and one 1x12 female header, both are low profile.
One 2-pin JST connector, 2mm pitch.
 
  2  Plug two male headers onto breadboard at 0.4" apart. Make sure it's 0.4" apart, not 0.5" apart.
  3. Place the SmallPICO board over the two male headers.
Start soldering 2 pins, pin1 and pin13.  The pin 1 is the ground pin at the low left corner, the pin 13 is the GPIO04 pin at the up right corner.  Solder pins while pressing down the board.  Once those 2 pins are soldered, check to make sure there is no gap between the PCB and the male headers. If not, you still have a chance to correct it. See the next picture.
 Then solder all other remaining pins.
Be very careful when soldering as some pins are close to components, don't make solder bridges or de-solder components. The capacitor below the reset pin is connected to the reset pin. So if you make solder bridge on that connection that's OK.
  4.  No gap between the PCB and the male header.
   

5.  Two pins of the JST connector come in right-angle. You need to bend the pins and make them straight.

As shown at left, the left hand side of the picture is the connector with right angle pins, the right hand side is the connector with straighten pins after bending.

  6.  Then place the connector as shown at left before soldering it.

Solder the left pin first.  If the connector is slanted, then twist the the connector count clockwise to make the connector perfectly in the horizontal position, then solder the right pin .
  7. This is the final assembled board. 

Take care of the LiPo battery connector.  When you unplug a battery cable hold the connector with one hand and unplug the cable with the other hand.

  8. Cut off the tab on a battery cable connector.

Sometimes the the battery connector is too tight and hard to pull the cable out. You can cut off the tab in the middle, so you can pull out the cable from the connector easier.

 
     

 

 

 

Schematic

 

Rev. A

 

Rev. B

 

Example Programs