HardLabs

Impedance matcher

hacker-fab·impedance-matcher·hardware/PCB/impedance_matcher.kicad_pcb

Impedance matcher PCB layout, top view — open source NXP board by hacker-fab
Simulate this board

About the Impedance matcher PCB

Impedance matcher is an open source NXP PCB design by hacker-fab, published on GitHub under the Custom license license. It is a 4-layer board measuring 72 × 63 mm, with 47 components from 28 distinct parts.

Its main chip is the TEENSY_4.1, from the NXP family. Other key parts include the TLV2372IP. By type, the board carries 15 resistors, 8 capacitors, 4 inductors, 2 diodes, 1 IC and 1 module.

From the project

Automatic impedance matcher for RF sputtering chamber at CMU Hacker Fab

Teensy 4.1 control loop firmware, custom PCB/CAD hardware, and Python telemetry logging/plotting tools.

Arduino libraries: Adafruit SSD1306, Adafruit GFX, and TMCStepper (GUI build); TMCStepper only for headless.

- GUI: Gradient-style matching toward lower VSWR; loop runs matching, encoder poll, then OLED refresh. - Headless: Same matching; control via serial (stream on, help, etc.).

Main components on the Impedance matcher

TLV2372IPTEENSY_4.1

Impedance matcher bill of materials (BOM)

47 components, 28 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TLV2372IP
Texas Instruments
U1
1
TEENSY_4.1
A1
1
PC817B
PC817
Q1
1
BZX84C5V6
CR1
2
TMC2209_SILENTSTEPSTICK
DRIVER1, DRIVER2
2
CONN_01X04
Conn_01x04
FAN1, OLED1
1
Conn_01x02
I2C1
2
CONN_01X04
Conn_01x04
MOTOR1, MOTOR2
2
CONN_01X02
Conn_01x02
POWER1, TRANSMIT1
1
DMP6180SK3-13
DMP6180SK3-13TO252_DMP6180SK3_DIO
Diodes Incorporated
REV_POLARITY1
1
CONN_01X05
Conn_01x05
ROTARY1
1
L7812CV
STMicroelectronics
STEP_DOWN1
1
MT3608
XLSEMI
STEP_UP0
1
JST_03
SWR1
1
SS34
D1
1
BAV99S
D2
3
MPZ2012S101AT000
FerriteBead
TDK
FB1, FB2, FB3
1
SMNR5040-220MT
22u
Sunlord
L1
2
CL21A226MAQNNNE
22u
Samsung Electro-Mechanics
C1, C2
2
100U
100u
C3, C4
Show 8 more
QtyPartRefs
4
0805B334K500NT
330n
FH (Guangdong Fenghua)
C7, C8, C9, C10
1
0805W8F4700T5E
470
UNI-ROYAL(Uniroyal Elec)
R1
3
0805W8F2201T5E
2.2k
UNI-ROYAL(Uniroyal Elec)
R2, R5, R7
3
0805W8F1003T5E
100k
UNI-ROYAL(Uniroyal Elec)
R3, R4, R6
1
0805W8F6202T5E
62k
UNI-ROYAL(Uniroyal Elec)
R8
1
0805W8F1002T5E
10k
UNI-ROYAL(Uniroyal Elec)
R9
2
0805W8F2701T5E
2.7k
UNI-ROYAL(Uniroyal Elec)
R10, R11
4
0805W8F1001T5E
1k
UNI-ROYAL(Uniroyal Elec)
R12, R13, R14, R15

Impedance matcher design files

The KiCad project lives in the hacker-fab/impedance-matcher repository on GitHub; these links point at the commit this page was built from.

Impedance matcher: common questions

What microcontroller does the Impedance matcher use?

The Impedance matcher is built around the TEENSY_4.1, from the NXP family.

How big is the Impedance matcher PCB?

The Impedance matcher measures 72 × 63 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Impedance matcher?

47 components, from 28 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 Impedance matcher design files?

From the hacker-fab/impedance-matcher repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Impedance matcher design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Impedance matcher without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.

Similar boards