2 layers123 × 87.5 mm
FastLOGIC
Neumi/fastLOGIC
An affordable Arduino-based board designed for straightforward (industrial) logic control, ideal for building small-scale automation and control solutions.
180 parts23MIT
2 layers45 × 60 mm
Usb2mbus
ucw-gadgets/mbus2usbUSB to Mbus master board
- Size
- 45 × 60 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 32
- Pads
- 139
- Tracks, vias
- 165, 54
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 28 Jan 2023
- Updated
- 28 Jan 2023
Overview
Usb2mbus is an open-source printed circuit board by ucw-gadgets, from the ucw-gadgets/mbus2usb repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 45 × 60 mm with 57 parts on 32 nets, routed with 165 tracks and 54 vias.
It is built around the CH340K, EL817 and 74HC14, with the BD136 and MMBT5551L among its other parts. Its parts include 15 resistors, 6 capacitors, 6 diodes, 5 connectors and 4 ICs.
Main components
5
CH340K
ESSOP-10-150mil-1mm-20℃~+70℃ 2Mbps 3.3V、5V USB 2.0 USB to serial ESSOP-10-150mil-1mm USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
EL817
DIP-4-55℃~+110℃ 1 1.2V 100mV@20mA,1mA 18us 18us 5.8mA 50% 50V 5kV 600% 9V Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSEverlight ElectronicsTransistor, Photovoltaic Output Optoisolators
74HC14
SOP-14-40℃~+85℃ 1.9V、3.98V、4.4V、5.48V、5.9V 100mV、260mV、260mV 20uA 25ns@4.5V,50pF 2V~6V 6 74HC Noise suppression function Schmitt trigger SOP-14 Inverters ROHSJSMSEMIInverters
BD136
TO-126-55℃~+150℃ 1 NPN 1.5A 100nA 1W 300 45V 500mV@1.5A,0.15A 50MHz 6V Independent NPN TO-126 Bipolar (BJT) ROHSHXY MOSFETBipolar (BJT)
MMBT5551L
SOT-23-55℃~+150℃ 1 NPN 100nA 160V 250mV 300mW 600mA 6V 80 NPN SOT-23 Bipolar (BJT) ROHSonsemiBipolar (BJT)
README
README.mdUSB to Mbus master board
Galvanically isolated USB to Mbus converter. Input voltage depends on external step-up board, intended for use with cheap chinese step-up. USB communication part is galvanically isolated.
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | R | Resistor_SMD:R_0603_1608Metric | R9, R10, R11, R12, R13 |
| 3 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C3, C4 |
| 3 | 33R | Resistor_SMD:R_0805_2012Metric | R6, R14, R15 |
| 2 | 10u/50V | Capacitor_SMD:C_0805_2012Metric | C5, C6 |
| 2 | EL817 | Package_DIP:SMDIP-4_W7.62mm | U2, U4 |
| 2 | GND | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP2, TP10 |
| 2 | MountingHole | MountingHole:MountingHole_3.2mm_M3_ISO14580 | H1, H2 |
| 1 | +24V | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP9 |
| 1 | +36V | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP3 |
| 1 | +5V | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 220k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 24V | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | 33k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 36V | LED_SMD:LED_0603_1608Metric | D6 |
| 1 | 39k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 3k3 | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 500mA | Fuse:Fuse_0603_1608Metric | F1 |
| 1 | 5V | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | 74HC14 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | BD136 | Package_TO_SOT_THT:TO-126-3_Vertical | Q1 |
| 1 | CH340K | Package_SO:SSOP-10_3.9x4.9mm_P1.00mm | U3 |
| 1 | CTS | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP14 |
| 1 | DTR | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP13 |
| 1 | D_Schottky | Diode_SMD:D_SMA | D1 |
| 1 | MBUS | Connector_Phoenix_MC:PhoenixContact_MC_1,5_2-G-3.81_1x02_P3.81mm_Horizontal | J1 |
| 1 | MBus- | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP4 |
| 1 | MMBT5551L | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | M_RX | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP8 |
| 1 | M_TX | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP6 |
| 1 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H3 |
| 1 | POWER | Connector_Phoenix_MC:PhoenixContact_MC_1,5_2-GF-3.81_1x02_P3.81mm_Horizontal_ThreadedFlange | J4 |
| 1 | Polyfuse_Small | Fuse:Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F2 |
| 1 | RTS | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP12 |
| 1 | RX | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP7 |
| 1 | RX | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | STEPUP | meteopress_footprints:PTSA_1.5_4-3.5-Z-1985218 | J5 |
| 1 | TX | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | TX | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP5 |
| 1 | USB | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | USB_B | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J2 |
| 1 | USB_GND | TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm | TP11 |
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Questions
How big is the Usb2mbus PCB?
It measures 45 × 60 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Usb2mbus use?
57 parts, built around the CH340K, EL817, 74HC14 and BD136. 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 Usb2mbus KiCad files?
From the ucw-gadgets/mbus2usb repository on GitHub, at the commit this page was made from: the board is hw/usb2mbus.kicad_pcb and its schematic hw/usb2mbus.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Usb2mbus design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).