Build Instructions

In its simplest form, building the board consists of soldering all components in their correct places, as shown in the table below.

To make the process of soldering the board as easy as possible, it’s best to start with the smallest components first. All components sit on the top of the board, none on the bottom.

See the next page for a step-by-step build guide.

High resolution photos of a finished board can be found here. Note that this is a slightly earlier board where the bluetooth wires are soldered directly to the board instead of connected via a header. Also the components appearance may differ slightly to those supplied in the kits, as the suppliers may change between manufacturing runs.

Video Instructions

Ian has recorded a video of building a board: View on Youtube.

PCB Component Reference Table

Use this table to identify which component goes to which label on the PCB

Ref Name

Description

Value / Type

BT

6 way Pin Header

C1

Electrolytic Capacitor

22uF

C3

Ceramic Capacitor

1u

C4

Ceramic Capacitor

1u

C5

Ceramic Capacitor

1u

Current

Pluggable Terminal 5.08mm 4pin

-

D1

Diode Schottky 1A 40V DO41

1N5819RL

Expansion

-

-

Ext

Pluggable Terminal 5.08mm 4pin

-

FS1

Polyfuse, 250mA

250mA

MotorPWM

Pluggable Terminal 5.08mm 2pin

-

PowerIn

Pluggable Terminal 5.08mm 3pin

-

PWM

LED 5mm

-

Q1

Transistor

BC547

R1

Resistor

82K

R2

Resistor

16K

R3

Resistor

82K - originally 33K was used for early boards

R4

Resistor

16K

R5

Resistor

10K

R6

Resistor

1K

R7

Resistor

10K

R8

Resistor

1K

R9

Resistor

1K

R10

Resistor

1K

R11

Resistor

1K

R12

Resistor

1K

R13

Resistor

1K

R14

Resistor

1K

R15

Resistor

470R

R16

Resistor

1K

R17

Resistor

1K

R18

Resistor

1K

R19

Resistor

1K

R20

Resistor

4K7

R21

Resistor

4K7

R22

Resistor

10K

R23

Resistor

10K

R24

Resistor

47K

RPM

Pluggable Terminal 5.08mm 4pin

-

Therm

Pluggable Terminal 5.08mm 3pin

-

Throttle

Pluggable Terminal 5.08mm 3pin

-

U1

Arduino Headers

-

U2

Regulator,6.5-32Vin,5Vout 1A

TSR_1-2450

U3

Dual BIFET Op Amp

MCP6002

Once the board is fully populated there will be a few components remaining. These are the sensors that fit to the car. Your kit may also have a few spare components.

Pin-outs for the connectors on the eChook can be found in the 'Connecting the eChook to the car' section of the documentation.