2 layers36.9 × 48.9 mm
RS485 Controller
tomrodinger/RS485_Controller
This integrates an ESP32-S3 module with an RS485 interface, so that it can be used to control Gearotons Servomotors or other RS485 devices
113 partsMIT
2 layers46.7 × 30.9 mm
V1 not completed
tomrodinger/RS485_ControllerThis integrates an ESP32-S3 module with an RS485 interface, so that it can be used to control Gearotons Servomotors or other RS485 devices
- Size
- 46.7 × 30.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 93
- Pads
- 304
- Tracks, vias
- 483, 126
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 18 Oct 2025
- Updated
- 5 Nov 2026
Overview
V1 not completed is an open-source printed circuit board by tomrodinger, from the tomrodinger/RS485_Controller repository on GitHub, published under the MIT licence. It is a 2-layer board of 46.7 × 30.9 mm with 64 parts on 93 nets, routed with 483 tracks and 126 vias.
It is built around the ESP32-S3-MINI-1U-N8, CP2102N-A02-GQFN24R and CD4023BM/TR, with the LM393DR2GH, SP3485EN-Y and BSS84AK,215(ES) among its other parts. Its parts include 24 resistors, 12 capacitors, 6 diodes, 5 ICs and 4 transistors. It belongs with the interfaces and adapters boards and the ESP32 boards of this library.
Main components
9
ESP32-S3-MINI-1U-N8
VFQFN-56-EP-40℃~+105℃ -98.4dBm 1.8V~3.6V、3V~3.6V 2.4GHz 21dBm 340mA 88mA Bluetooth5.0 ESP32-S3 UART、SDIO、SPI、I2C、I2S、JTAG、USB VFQFN-56-EP WiFi Modules ROHSEspressif SystemsWiFi Modules
CP2102N-A02-GQFN24R
QFN-24-EP(4x4)-40℃~+85℃@(Ta) 1.3uA 3V~3.6V 9.5mA USB 2.0 USB to UART QFN-24-EP(4x4) USB Converters ROHSSilicon LabsUSB Converters
CD4023BM/TR
SOIC-14-40℃~+105℃ 0V~50mV 1.5V、3V、4V 3 3 3.5V、7V、11V 3V~15V 4.95V~5V、9.95V~10V、14.95V~15V 4000 Series 45ns@15V,50pF 6.8mA 6.8mA NAND Gate SOIC-14 Logic Gates ROHSHGSEMILogic Gates
LM393DR2GH
SOP-8ESD Protection SOP-8 Comparators ROHSonsemiComparators
SP3485EN-Y
SOP-8SOP-8 RS-485 / RS-422 ICs ROHSYLPTECRS-485 / RS-422 ICs
BSS84AK,215(ES)
SOT-23SOT-23 MOSFETs ROHSElecSuperMOSFETs
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes22PF/50V 10%
插件插件 Through Hole Ceramic Capacitors ROHSMade in ChinaThrough Hole Ceramic CapacitorsSM712
SOT-23-55℃~+125℃ 12A 16V、26V 1uA、2uA 2 300W 7.5V、13.5V 75pF 7V、12V Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOT-23 ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
README
PCB/V1_not_completed/README.mdUnfinished design archive
This directory contains hardware work that predates the datasheet task and is retained as an unfinished development archive. Its library files and manufacturing exports are not the released RS485 Controller design.
The released product remains RS2 / PCB revision 0.5 in ../0.5, covered by datasheet document revision 1.0. Do not interpret this directory name as a released hardware version or use these fabrication exports as the production package for PCB 0.5.
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | TestPoint | rs485RPihat:testpoint_no_border | TP7, TP8, TP9, TP10, TP11, TP12, TP13, TP14 |
| 6 | 100nF/50V | Capacitor_SMD:C_0603_1608Metric | C2, C4, C7, C11, C12, C16 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R8, R16, R19, R25, R27 |
| 5 | 4.7k | Resistor_SMD:R_0603_1608Metric | R2, R21, R22, R28, R29 |
| 4 | 20k | Resistor_SMD:R_0603_1608Metric | R4, R13, R20, R26 |
| 3 | BSS84AK,215 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 10M | Resistor_SMD:R_0603_1608Metric | R17, R18 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric | C6, C10 |
| 2 | 10uF/10V | Capacitor_SMD:C_0603_1608Metric | C3, C5 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | 560R | Resistor_SMD:R_0603_1608Metric | R1, R3 |
| 2 | 75R | Resistor_SMD:R_0603_1608Metric | R23, R24 |
| 1 | 1N5819WS | Celebi:SOD323 | D2 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C15 |
| 1 | 220R | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 22pF/50V | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | CD4023BM/TR | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U6 |
| 1 | CP2102N-A02-GQFN24R | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U1 |
| 1 | ESP32-S3-MINI-1U | RF_Module:ESP32-S2-MINI-1U | U7 |
| 1 | LM393DR2G | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | LOGO | LOGO | G*** |
| 1 | Q_NMOS_GSD | Package_TO_SOT_SMD:SOT-23 | Q4 |
| 1 | Raspberry-Pi_2x5-Pin_Header | rs485RPihat:con-WR-PHD-61031021821 | J3 |
| 1 | SM712 | Celebi:SOT23-3 | D3 |
| 1 | SP3485EN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | TSM-108-01-T-SH-A-P-TR | conn:SAMTEC_TSM-108-01-T-SH-A-P-TR_hole1.5mm | J2 |
| 1 | TVS_5V | Celebi:SOT23-6L | D1 |
| 1 | USB-Micro | Celebi:usb-MicroXNJ | J1 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_Palconn_UTC16-G | J5 |
| 1 | green | LED_SMD:LED_0805_2012Metric | D5 |
| 1 | red | LED_SMD:LED_0805_2012Metric | D6 |
| 1 | yellow | LED_SMD:LED_0805_2012Metric | D4 |
Questions
How big is the V1 not completed PCB?
It measures 46.7 × 30.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the V1 not completed use?
64 parts, built around the ESP32-S3-MINI-1U-N8, CP2102N-A02-GQFN24R, CD4023BM/TR and LM393DR2GH. 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 V1 not completed KiCad files?
From the tomrodinger/RS485_Controller repository on GitHub, at the commit this page was made from: the board is PCB/V1_not_completed/V1.kicad_pcb and its schematic PCB/0.1/0.1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the V1 not completed design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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