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PI Controller

QSUM-UNB·Frequency-Offset-Lock·PI Controller/hardware/PI Controller.kicad_pcb

PI Controller PCB layout, top view — open source board by QSUM-UNB

About the PI Controller PCB

PI Controller is an open source PCB design by QSUM-UNB, published on GitHub. It is a 4-layer board measuring 60 × 30 mm, with 55 components from 25 distinct parts.

Other key parts include the PID_Amp, DG449DS-T1-E3 and OP1177. By type, the board carries 19 capacitors, 14 resistors, 10 connectors, 6 inductors, 3 ICs and 2 diodes.

From the project

PCB designs for a standalone optical frequency-offset locking system.

- © 2026 by K. Shalaby, P. Trottier, T. Reuschel, and B. Barrett - PCB designs licensed under CC BY-NC-SA 4.0

- This repository contains the PCB designs for a standalone optical frequency-offset locking system. All PCB designs were developed in KiCAD. - Files for each circuit component (or tile) are organized into the directory structure described below. - Details about the locking system and its performance can be found in our publication: - K. Shalaby et al, Standalone optical frequency-offset locking electronics for atomic physics, Rev. Sci. Instrum. 97, 033004 (2026). Pre-print…

PI Controller, from the project README
From the project README

Main components on the PI Controller

PID_AmpDG449DS-T1-E3OP1177

PI Controller bill of materials (BOM)

55 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
PID_Amp
U1
1
DG449DS-T1-E3
U2
1
OP1177
U3
1
PID Switch
J1
2
142-1701-626‎
J3, J4
1
25K Trimpot
J11
1
2Meg Trimpot
J12
2
Switch
J13, J16
2
50K Trimpot
J14, J15
1
Input Power
J17
1
20K
20k
RV1
2
D
D1, D2
6
MMZ2012Y202BTD25
FB1, FB2, FB3, FB4, FB5, FB6
2
100NF
100nF
C1, C2
1
10NF
1nF
C3
1
1NF
100pF
C4
1
10.1UF
100nF
C5
6
10NF
10nF
C6, C9, C11, C14, C17, C19
6
1UF
1uF
C7, C8, C10, C15, C16, C18
2
1UF
1uF
C12, C13
Show 5 more
QtyPartRefs
7
1k
R1, R2, R3, R4, R5, R6, R7
4
2k
R8, R9, R10, R11
1
10K
10k
R12
1
50
R13
1
0
R14

PI Controller design files

The KiCad project lives in the QSUM-UNB/Frequency-Offset-Lock repository on GitHub; these links point at the commit this page was built from.

PI Controller: common questions

How big is the PI Controller PCB?

The PI Controller measures 60 × 30 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the PI Controller?

55 components, from 25 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 PI Controller design files?

From the QSUM-UNB/Frequency-Offset-Lock 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 PI Controller design in my own project?

The repository has no license, so all rights stay with QSUM-UNB. Use it as a reference, and ask the author before reusing the design.

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