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Fan test adapter

tjko·fan-test-adapter

Fan test adapter PCB layout, top view — open source board by tjko
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About the Fan test adapter PCB

Fan test adapter is an open source PCB design by tjko, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 145 × 65 mm, with 68 components from 47 distinct parts.

Other key parts include the SPX2954-3.3. By type, the board carries 16 connectors, 15 resistors, 12 diodes, 11 capacitors, 4 jumpers and 2 transistors.

It belongs with the test & measurement designs in this gallery.

From the project

Adapter PCB board for easily testing PC (PWM) fans.

Adapter was created to simplify characterising PC fans. It's mainly meant for PWM fans, but can also be useful for 3-pin PC fans. Adapter also has common JST connectors for common 2-pin fans. This adapter was used in development and testing of Fanpico (Fanpico is a smart PWM fan controller) to "emulate" motherboard FAN outputs.

Adapter is meant to be used with 3 channel programmable power supply (but will work fine with 1 or 2 channel PSUs) 2+ channel oscilloscope (or frequency counter) * 2 channel signal generator

Fan test adapter, from the project README
From the project README

Main components on the Fan test adapter

SPX2954-3.3

Fan test adapter bill of materials (BOM)

68 components, 47 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SPX2954-3.3
U1
2
2N7002K
Q1, Q2
1
3.3V Output
J1
1
Extra GND Pins
J2
1
CONN_01X02_MALE
Fan2_JST2
J3
1
CONN_01X02_MALE
Fan1_JST2
J4
1
CONN_01X02_MALE
Fan2_JST4
J5
1
CONN_01X02_MALE
Fan1_JST4
J6
1
CONN_01X02_MALE
Fan2_JST1
J7
1
CONN_01X02_MALE
Fan2_JST3
J8
1
CONN_01X02_MALE
Fan1_JST1
J9
1
CONN_01X02_MALE
Fan1_JST3
J10
1
FAN_CPU_4PIN
Fan2
Molex
J11
1
FAN_CPU_4PIN
Fan1
Molex
J12
1
CONN_01X04_MALE
Fan2_Terminal
J13
1
Fan2_Header
J14
1
CONN_01X04_MALE
Fan1_Terminal
J15
1
Fan1_Header
J16
1
5-1634503-1
Fan2 PWM (Input)
TE
BNC1
1
5-1634503-1
Fan1 PWM (Input)
TE
BNC2
Show 27 more
QtyPartRefs
1
5-1634503-1
Fan2 Tacho (Output)
TE
BNC3
1
5-1634503-1
Fan1 Tacho (Output)
TE
BNC4
1
Fan1 Power
DC1
1
Fan2 Power
DC2
1
Aux Power
DC3
1
Fan2 Power
JP1
1
Aux Power
JP2
1
Fan2 Current
JP3
1
Fan1 Currrent
JP4
3
SM5819PL-TP
D1, D9, D10
3
SBRT5A50SA
D2, D3, D7
3
FM4007W
D4, D11, D12
3
LED
D5, D6, D8
1
10uF 35V
C1
1
581-TAJB475K035R
4.7uF 35V
C2
2
DNF
C3, C5
1
0.1uF 35V
C4
1
10uF
C6
1
10uF
C7
2
1NF
1nF
C8, C9
2
0.1uF
C10, C11
2
100K
10k
R1, R4
3
5k
R2, R3, R5
4
1k
R6, R8, R11, R13
2
33K
33k
R7, R9
2
10K
10k
R10, R12
2
1M
R14, R15

Fan test adapter design files

The KiCad project lives in the tjko/fan-test-adapter repository on GitHub; these links point at the commit this page was built from.

Fan test adapter: common questions

How big is the Fan test adapter PCB?

The Fan test adapter measures 145 × 65 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fan test adapter?

68 components, from 47 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Fan test adapter design files?

From the tjko/fan-test-adapter repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Fan test adapter design in my own project?

Yes, under the terms of its GPL-3.0 license, which tjko chose for the repository.

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