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Digital Tachometer for Harley Davidson Sportster (Part 8 - Schematic and BOM)

Part1 / Part2 / Part3 / Part4 / Part5 / Part6 / Part7 / Part8 / Part9 / Part10 / Part11 / Part12 / Part13 / Part14 / Part15

So far, everything we have done has been to investigate about the SAE J1850 protocol, check on the Internet about which components are available and think how we are going to build this tachometer. Now it is time to start the practical part, this means, start to define the schematic to allow us, afterwards, design the PCB (Printed Circuit Board).

In order to do it we will use specific electronic design software that we can find on the following list. In my case, I have used Altium Designer.
Here, you have the schematic (PDF / Altium ):

Content: Harley tachometer schematic. Source: Momex.cat

And the list of components or BOM (Bill Of Materials):

Component Value Quantity Footprint ID
Resistor SMD 0805 1 kOhm 2 R_0805 R5, R6
Resistor SMD 0805 10 kOhm 3 R_0805 R3, R11, R12
Capacitor SMD 0805 10 uF 1 C_0805 C2
Capacitor SMD 0805 1000 pF 1 C_0805 C5
AXIAL CAPACITOR 1000 uF 1 AXIAL CAP C1
Resistor SMD 0805 1200 Ohm 1 R_0805 R10
Capacitor SMD 0805 15 pF 2 C_0805 C3, C4
1N4001 Diode - 1 1N400X D1
XTAL - 1 XTAL - HC-49U X1
Resistor SMD 0805 220 Ohm 10 R_0805 R4, R7, R8, R9, R13, R14, R15, R16, R17, R18
Resistor SMD 0805 47 kOhm 2 R_0805 R1, R2
LED SMD 0805 GREEN 6 LED_0805 LED3, LED4, LED6, LED11, LED12, LED13
PINHEADER 1X2 1X2 1 HEADER-1X2 K3
PINHEADER 1X5 1X5 1 HEADER-1X5 K1
PINHEADER 1X6 1X6 1 HEADER-1X6 K2
LM340T-5.0NOPB 5V 1 TO-220-3 U2
MM5450YV - 1 PLCC-L44_M U1
NPN PZT3904 - 1 SOT223 Q1
PIC18F2553-I/SO - 1 SOIC-SO28_M U3
PNP PZT3906 - 1 SOT223 Q2, Q3
LED SMD 0805 RED 2 LED_0805 LED10, LED15
SA56-51ZGWA 7seg-CA GREEN 5 H-10 DS0, DS1, DS2, DS3, DS4
LED SMD 0805 YELLOW 7 LED_0805 LED1, LED2, LED5, LED7, LED8, LED9, LED14

Project Index:
Part1 / Part2 / Part3 / Part4 / Part5 / Part6 / Part7 / Part8 / Part9 / Part10 / Part11 / Part12 / Part13 / Part14 / Part15

keywords: HD, harley, davidson, tachometer, tacho, tacòmetre, rpm, J1850, SAE, schematic, BOM