2 layers79 × 90 mm
MHCI DMX
About-Time-Technologies/MHCI
Modular Hardware Control Interface - Components for the Events Industry
89 parts2
2 layers82.5 × 151 mm
RS232-Relay
About-Time-Technologies/RS232-Relay- Size
- 82.5 × 151 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 88
- Nets
- 112
- Pads
- 338
- Tracks, vias
- 311, 122
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Aug 2024
- Updated
- 2 Mar 2025
Overview
RS232-Relay is an open-source printed circuit board by About-Time-Technologies, from the About-Time-Technologies/RS232-Relay repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 82.5 × 151 mm with 88 parts on 112 nets, routed with 311 tracks and 122 vias.
It is built around the MAX3232ID, TEC 2-1210WI and LTV-847, with the ULN2003 among its other parts. Its parts include 27 resistors, 14 diodes, 13 switches, 11 capacitors and 8 connectors. It belongs with the home automation and IoT boards of this library.
Main components
4
MAX3232ID
SOIC-16-40℃~+85℃ 2 2 250Kbps 300uA 3V~5.5V Short-Circuit Protection Transceiver Yes ±15kV SOIC-16 RS232 ICs ROHSTexas InstrumentsRS232 ICsTEC 2-1210WI
SIP,21.8x9.1mm1 3.3V 4.5V~18V 500mA 75% SIP,21.8x9.1mm DC-DC Power Modules ROHSTRACO POWERDC-DC Power Modules
LTV-847
DIP-16-30℃~+110℃ 1.2V 100mV@20mA,1mA 200mW 35V 3us 4 4us 50% 50mA 50mA 5kV 600% 6V DC Phototransistor DIP-16 Transistor, Photovoltaic Output Optoisolators ROHSLite-OnTransistor, Photovoltaic Output OptoisolatorsULN2003
SOP-161.1V@250uA,100mA 25pF 2V 30V 500mA 50uA 50uA Seven channels SOP-16 Darlington Transistor Arrays ROHSBLDarlington Transistor Arrays
README
README.mdRS232-Relay
Parts
88| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 2000R | Resistor_SMD:R_0603_1608Metric | R1, R5, R8, R10, R12, R14, R16, R18, R20, R22, R24, R26, R28 |
| 13 | 220R | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R7, R9, R11, R13, R15, R17, R19, R21, R23, R25 |
| 12 | G5V-1 | Relay_THT:Relay_SPDT_Omron_G5V-1 | K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, K12 |
| 12 | RED | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D7, D8, D9, D10, D11, D12, D13, D14 |
| 5 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C6, C8, C9, C10, C11 |
| 3 | 10u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C4, C7, C14 |
| 3 | Conn_01x08 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_8-G-5,08_1x08_P5.08mm_Horizontal | J1, J3, J6 |
| 3 | LTV-847 | Package_DIP:DIP-16_W7.62mm_SMDSocket_SmallPads | U2, U5, U6 |
| 2 | Conn_01x09 | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J4, J5 |
| 2 | Green | LED_SMD:LED_0805_2012Metric | D5, D6 |
| 2 | ULN2003 | Package_DIP:DIP-16_W7.62mm_SMDSocket_SmallPads | U3, U16 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | BTN_01 | TestPoint:TestPoint_Pad_D1.0mm | TP12 |
| 1 | Conn_01x02 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_2-G-5,08_1x02_P5.08mm_Horizontal | J2 |
| 1 | GND_ISO | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | LOGO | LOGO | G*** |
| 1 | MAX3232 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U4 |
| 1 | RS232_1 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_3-G-5,08_1x03_P5.08mm_Horizontal | J7 |
| 1 | RS232_2 | Connector_Phoenix_MSTB:PhoenixContact_MSTBA_2,5_3-G-5,08_1x03_P5.08mm_Horizontal | J8 |
| 1 | SW_SPST | Button_Switch_THT:SW_PUSH_1P1T_6x3.5mm_H4.3_APEM_MJTP1243 | SW2 |
| 1 | TEC2-1210WI | Converter_DCDC:Converter_DCDC_TRACO_TMR-xxxx_THT | U1 |
| 1 | UART_1_RX | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | UART_1_TX | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | UART_2_RX | TestPoint:TestPoint_Pad_D1.0mm | TP8 |
| 1 | UART_2_TX | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
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Questions
How big is the RS232-Relay PCB?
It measures 82.5 × 151 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RS232-Relay use?
88 parts, built around the MAX3232ID, TEC 2-1210WI, LTV-847 and ULN2003. 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 RS232-Relay KiCad files?
From the About-Time-Technologies/RS232-Relay repository on GitHub, at the commit this page was made from: the board is hardware/RS232-Relay.kicad_pcb and its schematic hardware/RS232-Relay.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RS232-Relay design in my own project?
Its repository publishes it under the GPL-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).