2 layers99 × 96 mm PracticeFieldTimerV2, the printed circuit board in 3D

PracticeFieldTimerV2

Projects that support First Robotics activities

Size: 99 × 96 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 38
Nets: 52
Pads: 157
Tracks, vias: 296, 38
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 23 May 2025
Updated: 27 Jul 2026

Overview

PracticeFieldTimerV2 is an open-source printed circuit board by emintz, from the emintz/FirstRobotics repository on GitHub, published under the AGPL-3.0 licence. It is a 2-layer board of 99 × 96 mm with 38 parts on 52 nets, routed with 296 tracks and 38 vias.

It is built around the ESP32-DEVKITC-VE, SN65HVD230DR and MJTP1119, with the 500ASSP1M2QE among its other parts. Its parts include 12 resistors, 6 connectors, 3 ICs, 3 diodes and 3 switches. It belongs with the ESP32 boards of this library.

Main components

README

PracticeFieldTimer/PracticeFieldTimer-38-pin-ESP32s2/README.md

Generic 38 Pin ESP32 Development Board Based Countdown Timer

:warning: DEPRECATED :warning:

This design is deprecated and scheduled for removal. Favor the current ESP32 DevKitC-based configuration.

Parts

Qty	Value	Footprint	References
7	510	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal	R3, R4, R5, R8, R9, R10, R11
4	MountingHole_3.2mm_M3_Pad_TopBottom_Grounded	Misc:MountingHole_3.2mm_M3_Pad_TopBottom_Grounded	MH1, MH2, MH3, MH4
3			, , MH3
2	100n	Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm	C1, C3
2	4k7	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal	R6, R7
2	MJTP1119	Misc:MJTP1119	S1, S2
1	/CAN Enable	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J5
1	1074	Misc:BAT_1074	BT1
1	10K	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal	R1
1	10k	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal	R12
1	120	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal	R2
1	500ASSP1M2QE	Misc:SW_500ASSP1M2QE	S3
1	DS3231MZ_TRL	Misc:21-0041B_8_MXM	U4
1	ESP32-DevKitC	PCM_Espressif:ESP32-DevKitC	U1
1	External Controls	TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-07P_1x07_P5.00mm	J1
1	Green	Misc:LED_D5.0mm-PCBWay-Compatible	D2
1	LOGO	Misc:MetuchenMomentumLogo80Percent	Logo80%
1	Panel	TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-03P_1x03_P5.00mm	J3
1	RJ45-A	Misc:MTJ88TX1FSDLG	J7
1	RJ45-B	Misc:MTJ88TX1FSDLG	J6
1	Red	Misc:LED_D5.0mm-PCBWay-Compatible	D1
1	SN65HVD230DR	Misc:SN65HVD230DR	U5
1	Screw_Terminal_01x04	TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-04P_1x04_P5.00mm	J2
1	Yellow	Misc:LED_D5.0mm-PCBWay-Compatible	D3

Questions

How big is the PracticeFieldTimerV2 PCB?

It measures 99 × 96 mm and has 2 copper layers, 1.6 mm thick.

What parts does the PracticeFieldTimerV2 use?

38 parts, built around the ESP32-DEVKITC-VE, SN65HVD230DR, MJTP1119 and 500ASSP1M2QE. 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 PracticeFieldTimerV2 KiCad files?

From the emintz/FirstRobotics repository on GitHub, at the commit this page was made from: the board is PracticeFieldTimerV2/PracticeFieldTimerV2.kicad_pcb and its schematic PracticeFieldTimer/PracticeFieldTimer-38-pin-ESP32s2/PracticeFieldTimer-38-pin-ESP32s2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the PracticeFieldTimerV2 design in my own project?

Its repository publishes it under the AGPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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/emintz-firstrobotics-practicefieldtimerv2" title="PracticeFieldTimerV2 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/emintz-firstrobotics-practicefieldtimerv2.jpg" alt="PracticeFieldTimerV2" width="1200" height="900">

A picture that opens the board, for a README

[![PracticeFieldTimerV2](https://pcbkit.io/embed/boards/emintz-firstrobotics-practicefieldtimerv2.jpg?size=s)](https://pcbkit.io/boards/emintz-firstrobotics-practicefieldtimerv2)

Source

Repository: emintz/FirstRobotics
Board file: PracticeFieldTimerV2/PracticeFieldTimerV2.kicad_pcb
Commit: 67bb8f5
Licence: AGPL-3.0

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