2 layers65 × 80 mm Pen plotter, the printed circuit board in 3D

Pen plotter

Eine selbst entworfene PCB-Steuerplatine für einen DIY Pen Plotter, entwickelt in KiCad. Die Platine steuert zwei Schrittmotoren für die XY-Bewegung, einen Servo für den Stifthub und übernimmt Benutzerführung sowie…

Open in PCBKit

Size: 65 × 80 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 26
Nets: 43
Pads: 122
Tracks, vias: 183, 151
Pours: 1
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 22 May 2026
Updated: 22 May 2026

Overview

Pen plotter is an open-source printed circuit board by tomatencode, from the tomatencode/PenPlotterPCB repository on GitHub. It is a 2-layer board of 65 × 80 mm with 26 parts on 43 nets, routed with 183 tracks and 151 vias.

It is built around the SS8050. Its parts include 7 connectors, 6 resistors, 4 ICs, 2 capacitors and 2 transistors. It belongs with the ESP32 boards of this library.

Main components

SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)

README

README.md

Pen Plotter Controller Board

Funktionen

ESP32 – Haupt-Mikrocontroller (Breakout aufgelötet) für Bewegungssteuerung und Logik
2× TMC2209 – Schrittmotortreiber (Breakouts aufgelötet) mit UART-Konfiguration, stealthChop und stallGuard
SG90 Servo – Stift-Auf/Ab-Mechanismus
I2C LCD-Display – Angeschlossen über Steckverbinder
Drehgeber – Manuelle Steuerung und Menünavigation über Steckverbinder
Buzzer – Akustisches Feedback
Lüfter – Transistorgesteuerter Lüfter zur Kühlung der Motortreiber
5V Buck Converter – (Breakout aufgelötet) Erzeugt die interne 5V-Versorgungsschiene aus 24V
24V DC-Eingang – Versorgung über externen Transformator (DC-Hohlbuchse)

Stromversorgungsarchitektur

Schiene	Quelle	Verbraucher
24 V	Externer Transformator (DC-Buchse)	TMC2209 Motorspannung, Lüfter
5 V	Buck Converter Breakout	ESP32, Servo, Buzzer, LCD
3,3 V	Interner LDO des ESP32	TMC2209 Logikspannung, Drehgeber

Platinenübersicht

Schaltplan

PCB-Layout

3D-Ansicht

Entwickelt mit

KiCad – Schaltplan und PCB-Layout

Parts

Qty	Value	Footprint	References
4	MountingHole	MountingHole:MountingHole_3.2mm_M3	H1, H2, H3, H4
2	100u	Capacitor_THT:C_Radial_D5.0mm_H7.0mm_P2.00mm	C1, C2
2	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R2, R3
2	5k1	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R5, R6
2	Conn_01x04_Pin	Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical	J2, J3
2	SS8050	Package_TO_SOT_THT:TO-92	Q1, Q2
2	TMC2209_Breakout	Project_Breakouts:TMC2209_Breakout	U3, U4
1	100R	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R4
1	1k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1
1	5v_Buc_Breakout	Project_Breakouts:5V_Buc_Breakout	U2
1	Buzzer	Buzzer_Beeper:Buzzer_12x9.5RM7.6	BZ1
1	Conn_01x02	TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm	J1
1	Conn_01x02_Pin	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J4
1	Conn_01x03_Pin	Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical	J7
1	Conn_01x04_Socket	Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical	J6
1	Conn_01x05_Socket	Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical	J5
1	ESP32 Breakout	Project_Breakouts:ESP32_Breakout	U1

Questions

How big is the Pen plotter PCB?

It measures 65 × 80 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Pen plotter use?

26 parts, built around the SS8050. 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 Pen plotter KiCad files?

From the tomatencode/PenPlotterPCB repository on GitHub, at the commit this page was made from: the board is pen_plotter.kicad_pcb and its schematic pen_plotter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Pen plotter design in my own project?

Its repository states no licence, so its author keeps all rights: ask tomatencode before reusing the design.

Category and platform

ESP32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/tomatencode-penplotterpcb" title="Pen plotter in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/tomatencode-penplotterpcb.jpg" alt="Pen plotter" width="1200" height="900">

A picture that opens the board, for a README

[![Pen plotter](https://pcbkit.io/embed/boards/tomatencode-penplotterpcb.jpg?size=s)](https://pcbkit.io/boards/tomatencode-penplotterpcb)

Source

Repository: tomatencode/PenPlotterPCB
Board file: pen_plotter.kicad_pcb
Commit: 65f9201
Licence: Not stated

Similar boards

4 layers81.2 × 96.6 mm
Kv4p ht PANEL
VanceVagell/kv4p-ht
Open source handheld ham radio project KV4P-HT
174 parts828GPL-3.0
4 layers60 × 94 mm
DaisySeedPedal125b
bkshepherd/DaisySeedProjects
A collection of hardware and software projects based around the Electro-Smith Daisy Seed
80 parts559MIT
4 layers99.6 × 76.2 mm
E TKT
andreisperid/E-TKT
open source embossed label maker
110 parts481MIT
2 layers28 × 30 mm
OtterIron Devkit
Jana-Marie/Otter-Iron-PRO
USB-PD soldering station for JBC C245 handles.
64 parts321
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 layers243.8 × 171.5 mm
Neotron Pico
Neotron-Compute/Neotron-Pico
A Neotron powered by the Raspberry Pi Pico
242 parts250
2 layers100 × 100 mm
Heatplate v1.1
DerSpatz/PCB-reflow-solder-heat-plate
hardware design for a PCB reflow solder heat plate
57 parts179MIT
4 layers60 × 95 mm
STM32H7 GuitarPedal
GuitarML/GuitarPedalSTM32
Guitar pedal using a stm32h7 microcontroller programmed with CubeIDE (PCB and Firmware)
101 parts100MIT