We milled a UART board previously. In this tutorial, we are soldering the board.

There are two types of boards:

  • SMD (surface-mount device) boards
  • Through-hole boards

SMD components are smaller and the process of soldering is slightly different than through-hole soldering.

The UART board falls into the category of SMD boards.

We used the board schematics and BOM (Bill of Materials) from the following website: http://pub.fabcloud.io/programmers/programmer-serial-d11c/ibom/

PCB Assembly

The design above does not include the LED light and its resistor. Therefore, the following is the actual material list:

Ref Value Footprint Qty
C1 1uF C_1206 1
R1 4.99k R_1206 1
R2 0 R_1206 1
U1 Regulator_Linear_LM3480-3.3V-100mA SOT-23 1
U2 SAMD11C SOIC-14_3.9x8.7mm_P1.27mm 1
J1 Conn_PinHeader_2x02_SWD_P2.54mm_Vertical_SMD PinHeader_2x02_SWD_P2.54mm_Vertical_SMD 1
J2 Conn_Socket_FTDI_1x06_P2.54mm_Horizontal_SMD Socket_FTDI_01x06_P2.54mm_Horizontal_SMD 1
P1 Conn_USB_A_Plain Conn_USB_A_Plain 1
  1k R_1206 1
    LED light 1

Apart from the board and the components, you need these materials for soldering:

  • Solder iron
  • Solder iron stand
  • Solder
  • Multimeter
  • Magnifying glass
  • Diagonal cutter pliers
  • Tweezers
  • Solder wick braid (to remove solder from unwanted places)
  • Brass wool (to clean the solder iron tip)
  • Damp sponge (to clean the solderiron tip)

I have found helpful step-by-step soldering howtos from Adafruit.

Soldering

My board