4 layers50 × 50 mm
2 layers79.8 × 24 mm
Protyping board
Jgh163/RS485-PrototypePCB Design for RS-485 Communication
- Size
- 79.8 × 24 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 39
- Pads
- 130
- Tracks, vias
- 267, 30
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Apr 2025
- Updated
- 29 Apr 2025
Overview
Protyping board is an open-source printed circuit board by Jgh163, from the Jgh163/RS485-Prototype repository on GitHub. It is a 2-layer board of 79.8 × 24 mm with 40 parts on 39 nets, routed with 267 tracks and 30 vias.
It is built around the MAX485ED, AP2112K-3.3 and BSS138. Its parts include 19 resistors, 7 capacitors, 3 ICs, 3 transistors and 3 connectors. It belongs with the STM32 boards of this library.
Main components
3
MAX485ED
SOP-8-40℃~+85℃ 1 1 1mA 32 4.75V~5.25V 5Mbps Half-Duplex Transceiver ±8kV SOP-8 RS-485 / RS-422 ICs ROHSHTCRS-485 / RS-422 ICs
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R10, R11, R12, R13, R18, R19 |
| 4 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C6, C7 |
| 4 | 240 | Resistor_SMD:R_0603_1608Metric | R8, R9, R14, R15 |
| 3 | 4u7 | Capacitor_SMD:C_1206_3216Metric | C3, C4, C5 |
| 3 | BSS138 | Package_TO_SOT_SMD:SOT-23-3 | Q1, Q2, Q3 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R16, R17 |
| 2 | LED | LED_SMD:LED_1206_3216Metric | D1, D2 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | Boot 0 | Button_Switch_SMD:SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW1 |
| 1 | LOGO | LOGO | G*** |
| 1 | MAX485E | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | RS485 Output | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | Reset | Button_Switch_SMD:SW_Tactile_SPST_NO_Straight_CK_PTS636Sx25SMTRLFS | SW2 |
| 1 | STM32F042F6Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U2 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
Questions
How big is the Protyping board PCB?
It measures 79.8 × 24 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Protyping board use?
40 parts, built around the MAX485ED, AP2112K-3.3 and BSS138. 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 Protyping board KiCad files?
From the Jgh163/RS485-Prototype repository on GitHub, at the commit this page was made from: the board is Protyping board.kicad_pcb and its schematic Protyping board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Protyping board design in my own project?
Its repository states no licence, so its author keeps all rights: ask Jgh163 before reusing the design.
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