StarBoard Orange : "Soldering step by step"


日本語版はこちら : ☆ボードオレンジ:「ハンダ付けステップバイステップ」


'StarBoard Orange' is a base board for mbed NXP LPC1768 designed by @logic_star.

The board includes

  • microSD card connector
  • USB (Host side)
  • LAN(RJ-45)
  • LCD

You can use these features for various applications.

In this document, we will explain how to solder these parts.

What you need to prepare

  • StarBoard Orange
  • Components (BOM is available later in this document.)
  • mbed NXP LPC1768

StarBoard Orange

You can purchase StarBoard Orange and the cecessary components from kiban-honpo in Japan.

You can buy it if you live in Japan. If you don't ... Please ask to them or search in Amazon web store.


Bill of materials

Here is the BOM, as of 2010/09/14.

This component list may not latest version. Please see latest version of it from here : Latest component list

No. Designator Components Description Mount Source (Sorry. This is for Japanese people. But these photographs are good information for you.)
1 CN1 DC power jack 2DC0005D100 -
2 CN2 microSD connector
3 CN3 USB-A USB-4AF103(P) -
4 CN4 SIL-20P - None -
5 CN5 40P - -
6 CN6 40P - -
7 CN7 SIL-20P - None -
8 CN8 14P - -
9 CN9 LAN connector
J0011D21B -
10 BAT1 2023 battery holder - -
11 C1 Ceramic capacitor 0.1uF - h
12 C2 Ceramic capacitor 0.1uF -
13 C3 Ceramic capacitor 0.1uF -
14 C4 Ceramic capacitor 0.1uF -
15 C5 Ceramic capacitor 0.1uF -
16 C6 Ceramic capacitor 0.1uF -
17 C7 Ceramic capacitor 1000PF -
18 C8 Ceramic capacitor 0.1uF -
19 C9 Ceramic capacitor 0.1uF -
20 C10 Capacitor 47uF/10V -
21 C11 Capacitor 47uF/10V -
22 C12 Capacitor 47uF/10V -
23 C13 Ceramic capacitor 0.1uF -
24 C14 Capacitor 47uF/10V -
25 R1 Resistor 4.7K
26 R2 Resistor - None -
27 R3 Resistor - None -
28 D3 Schottky diode 1S3 -
29 D4 Schottky diode 1S3 -
30 D5 SBD BAT43 -
31 D6 SBD BAT43 -
32 IC1 CMOS555 LMC555 -
33 VR1 Variable resistance 100K
34 J1 Jumper 3PIN header -
35 J2 Jumper 3PIN header -
36 J3 Jumper 3PIN header -
37 J4 Jumper 3PIN header -
38 J5 Jumper 3PIN header -
39 - Jumper (Pins)
for J1 to J5 -
40 RF1 Resettable fuse RUSBF075 -
41 LCD LCD - -
42 Spacer Spacer for a LCD
M2.6×11mm AS-2611
43 Screw Screw for a LCD
M2.6×5mm PC-2605


Soldering surface mounted component (CN2)

The first part to solder is a surface mounted component, CN2.

You should solder it first because the pads of the component are very small.

Put on the microSD connector to the board, and solder at 'A'. This is temporary joint.

Check the position, and solder at 'B'.

After the soldering of these 2 points, check the position of 2 pads around C and 10 pads around D.

And then solder pads on 'C' and 'D' if the position is OK.

Soldering polarized components (D3, D4, D5, D6)

Lets solder polarized components.

You may solder polarized components first to make later soldering easier.

The diodes are installed here.(D3, D4, D5, D6)

The casode sides of the diodes are marked by white lines on the silk of the PCB.

This is matched to the sign of the diode.

Soldering non-polarized components (R1, C1, C2, C3, C4, C5, C6, C8, C9, C13

Lets solder non-polarized components.

Start with a resistor. (R1)

Solder 0.1uF capacitors (C1, C2, C3, C4, C5, C6, C8, C9)

Solder a 1000pF capacitor (C7)

Soldering polarized components (C10, C11, C12, C14)

Solder polarized capacitors. (C10, C11, C12, C14)

The minus sides of the polarized capacitors are marked by white lines on the silk of the PCB.

This is matched to the sign of the capacitor.


Have a break!

A variable resistor and jumpers (VR1, J1, J2, J3, J4, J5)

Solder a variable resistor and jumpers. (VR1, J1, J2, J3, J4, J5)

IC and connectors (IC1, CN1, CN3, CN9)

Solder an IC. (IC1)

Check the polarity by the silk on the PCB.

Solder connectors. (CN1, CN3, CN9)

Connectors and a resettable fuse (CN5, CN6, CN8, RF1)

Solder connectors for mbed. (CN5, CN6)

Solder resettable fuse. (RF1)

Solder a connector for LCD module. (CN8)

Misc. (BAT1)

Solder a battery holder. (BAT1)

The last part

Put on mbed.

Check a space between mbed and RF1.

Put on a LCD module to the board with a spacer.

The height of the spacer is 11mm.

Here is the result.

It's done!

It's the your mbed kit!

Setup of the jumpers

The board have 5 jumpers.

To complete work, setup jumpers.

Jumper Description Upper side Lower side
J1 Choose a voltage of a LCD module. +3.3V +5V
J2 Choose a function of a pin #2 of LCD module.
Give a voltage you selected in J1. Give a 0[V].
J3 Choose a function of a pin #1 of LCD module. Give a voltage you selected in J1. Give a 0[V].
J4 Choose a reference volage for contrast of a LCD module. Give a -2[V]. Give a 0[V].
J5 Choose a connection for R/W- of a LCD module. Connect R/W- to mbed. Connect R/W- to 0[V].


Basic information

Application examples

Update history

Version Date Description
1.0.0 2010/08/06 First version.
1.0.1 2010/08/14 Added application examples to references.
1.0.2 2010/08/15 Changed DC power jack.
1.0.3 2010/08/16
Fixed name of StarBoard Orange
1.0.4 2010/08/23 Added a link to latest component list.
1.0.5 2010/08/23 Updated spacer and screw.
1.0.6 2010/09/09 Updated english words.
1.0.7 2010/09/10 Updated links of application examples.
1.0.8 2010/09/15 Updated links of web sites.


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