2 layers100 × 100 mm
RC PT1
jkordek1/Automatic-Control
A collection of educational printed circuit boards (PCBs) developed for laboratory exercises in Automatic Control Systems.
12 parts
2 layers100 × 100 mm
Active PI
jkordek1/Automatic-ControlA collection of educational printed circuit boards (PCBs) developed for laboratory exercises in Automatic Control Systems.
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 13
- Pads
- 57
- Tracks, vias
- 72, 0
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Jun 2026
- Updated
- 21 Jul 2026
Overview
Active PI is an open-source printed circuit board by jkordek1, from the jkordek1/Automatic-Control repository on GitHub. It is a 2-layer board of 100 × 100 mm with 29 parts on 13 nets, routed with 72 tracks and 0 vias.
It is built around the TL072. Its parts include 6 resistors, 3 capacitors, 2 diodes, 2 fuses and 1 IC.
Main components
1README
README.mdAnalog Control Systems Laboratory PCBs
A collection of educational printed circuit boards (PCBs) developed for laboratory exercises in Automatic Control Systems. The project demonstrates the implementation of fundamental analog transfer functions using passive components and operational amplifiers.
The boards are intended for university courses and provide a hands-on platform for studying the behavior of basic dynamic systems through practical experiments.
Overview
This repository contains three independent laboratory boards:
| Board | Description |
|---|---|
| RC Network | Passive first-order RC circuit for studying time constants, transient response, and frequency response. |
| P / PT1 / DT1 | Active analog circuit implementing proportional (P), first-order lag (PT1), and derivative (DT1) transfer functions using operational amplifiers. |
| PI / I Controller | Active analog circuit implementing an integrator (I) and proportional-integral (PI) controller. |
Features
- Educational design for laboratory use
- Through-hole components for easy assembly and maintenance
- Banana connector interface for convenient measurements
- Powered from ±12 V laboratory power supply
- Designed in KiCad
- Fully documented schematics and PCB layouts
Boards
1. RC Network
A passive first-order RC circuit used to investigate:
- Step response
- Time constant
- Charging and discharging behavior
- Frequency response
- First-order transfer functions
2. P / PT1 / DT1 Board
An operational amplifier based circuit providing three selectable transfer functions:
- P – Proportional element
- PT1 – First-order lag element
- DT1 – Derivative element with first-order filtering
Jumper Configuration:
| Transfer Function | JP1 | JP2 |
|---|---|---|
| PT1 | Pins 2–3 | Pins 2–3 |
| DT1 | Pins 1–2 | Pins 1–2 |
| P | Pins 2–3 | Pins 1–2 |
This board allows students to compare the behavior of different dynamic systems under identical experimental conditions.
3. PI / I Controller
An operational amplifier implementation of:
- Integrator (I)
- Proportional–Integral (PI) controller
Jumper Configuration:
| Transfer Function | JP1 |
|---|---|
| PI | 1–2 |
| I | 2–3 |
The board is intended for experiments involving closed-loop control and controller tuning.
Software
Designed using KiCad.
The repository includes:
- Schematics
- PCB layouts
- Gerber files
- Bill of Materials (BOM)
- Manufacturing files
Applications
These boards are suitable for:
- Automatic Control Systems laboratories
- Analog Electronics courses
- Control Engineering education
- Demonstrations of transfer functions
- Experimental verification of theoretical models
Future Improvements
Planned additions include:
- Laboratory manuals
- Example experiments
- Simulation models
- Oscilloscope measurements
- Bode plots
- Assembly instructions
License
This project is released under the MIT License.
Author
Designed and developed for educational use in Automatic Control Systems laboratories.
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | TestPoint | Library:DELTRON 4mm banana socket - red | TP1, TP3, TP5 |
| 3 | TestPoint | Library:DELTRON 4mm banana socket - black | TP2, TP4, TP10 |
| 2 | 0.1uF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm | C3, C4 |
| 2 | 100mA | Capacitor_THT:C_Disc_D7.5mm_W4.4mm_P5.00mm | F1, F2 |
| 2 | 1N4007 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2 |
| 1 | 10nF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm | C2 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | Jumper_3_Open | Library:Jumper_1x03 | JP1 |
| 1 | LOGO | Library:tvz | G*** |
| 1 | LOGO | Library:logo | G*** |
| 1 | TL072 | Package_DIP:DIP-8_W7.62mm_LongPads | U1 |
| 1 | TestPoint | Library:DELTRON 4mm banana socket - yellow | TP9 |
| 1 | TestPoint | Library:DELTRON 4mm banana socket - blue | TP11 |
More from jkordek1/Automatic-Control
1Similar boards
- 2 layers148 × 84.5 mm
Panel daisy
ohmtech-rdi/eurorack-blocks
Software to Hardware Prototyping for Eurorack using C++, Max/Gen~ or Faust
259 parts410 - 2 layers39.6 × 99.1 mm
ESP32-Eurorack Audio
ctag-fh-kiel/ctag-tbd
CTAG TBD >>to be determined<< an extendible open source Eurorack sound module
128 parts260 - 4 layers121.9 × 109.2 mm
Plinkyblack hwmidi jacks
plinkysynth/plinky_public
a public release of the plinky sw and hw
300 parts227 - 2 layers58 × 110 mm
- 2 layers37 × 113.9 mm
- 2 layers111.3 × 106.4 mm
Super Sixteen v1
matthewcieplak/super-sixteen
Code and schematics for the Super Sixteen Eurorack sequencer
141 parts171 - 2 layers27.9 × 101.6 mm
MFOS Eight Stage Phase Shifter - Main
mzuelch/CATs-Eurosynth
Analog Synth Eurorack Modules
105 parts166MIT - 2 layers85.1 × 62.2 mm
Mic extension board
StoneRose35/cortexguitarfx
guitar effects processor implemented on various arm cortex platforms
75 parts146
Questions
How big is the Active PI PCB?
It measures 100 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Active PI use?
29 parts, built around the TL072. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Active PI KiCad files?
From the jkordek1/Automatic-Control repository on GitHub, at the commit this page was made from: the board is Active-PI/Active-PI.kicad_pcb and its schematic Active-PI/Active-PI.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Active PI design in my own project?
Its repository states no licence, so its author keeps all rights: ask jkordek1 before reusing the design.