Product_description: ['This Arduino Uno is perfect for prototyping circuit using through hole components or adding Schmartboard SMT to DIP adapters to prototype surface mount components with your Arduino project. The through hole grid is Schmartboard\'s signature offset that allows greater flexibility than standard through hole boards. The board has Pre Routed traces to minimize the use of wire jumpers. It includes all the basic components and a free 170 test point breadboard with an adhesive back. What happens when you take a Schmartboard Through Hole Arduino Mega Shield and bundle it with a Schmartboard SMT to DIP Adapter? You have a Schmartboard Arduino Mega Surface Mount Prototyping Shield Kit. A user solders his component onto the SMT to DIP adapter using Schmartboard?s patented "ez" technology, and then places the SMT to DIP onto the Through Hole Schmartboard Ardiuno Shield. This board is actually 3 different .65mm pitch adapter boards for 8 leads, 20 leads, and 28 leads. The 20 and 28 pin boards also include room for 0805 SMT components such as a bypass capacitor and pads for easy access to a ground. A standard row of 40 headers has been included as a bonus for your convenience.'] (Page 1)