Mfx link
About the Mfx link PCB
Mfx link is an open source PIC PCB design by GBert, published on GitHub. It is a 2-layer board measuring 50 × 50 mm, with 53 components from 36 distinct parts.
Its main chip is the SN65HVD230, from the PIC family. Other key parts include the LM393-1, 7805 and PIC18F25K80. By type, the board carries 14 resistors, 12 diodes, 9 connectors, 6 capacitors, 5 ICs and 3 transistors.
From the project
miscellaneous stuff / unsorted
Booster incl. mfx-Rükmeldung zusammen mit einem IBT-2 Modul
Kombination aus mfx-Rückmelder und DCC Booster, der auch MM und mfx kann [](https://github.com/GBert/misc/raw/master/mfx-link/pictures/mfx-BoosterLink_sketch.png)
Der mfx-Booster/Link bietet zusammen mit dem IBT-2 Modul und einem entsprechenden Netzteil eine kostengünstige Erweiterung für eine leistungsstarke Zentrale (10A).
Main components on the Mfx link
Mfx link bill of materials (BOM)
53 components, 36 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM393-1 | dil_8-300_socket | U1 |
| 2 | 7805 | TO-220_Neutral123_Vertical_LargePads | U2, U5 |
| 1 | SN65HVD230 PIC16F1705 | dil_14-300_socket | U3 |
| 1 | PIC18F25K80 6N137 | dil_8-300_socket | U4 |
| 2 | BC517 | TO-92_Inline_Narrow_Oval | Q1, Q2 |
| 1 | BC547 | TO-92_Inline_Narrow_Oval | Q3 |
| 3 | CONN_01X02 | pt_1,5-2-3,5-h | P1, P3, P6 |
| 1 | CONN_02X03 | Pin_Header_Straight_2x03 | P2 |
| 1 | Grove I2C | b4b-ph-kl | P4 |
| 1 | IBT-2 | Pin_Header_Straight_2x04 | P5 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03 | P7 |
| 1 | Grove UART | b4b-ph-kl | P8 |
| 1 | MFX | Pin_Header_Straight_1x02 | P9 |
| 1 | ICSP | ICSP | JP1 |
| 1 | RR7 | r-sil_8 | RR1 |
| 1 | SW_PUSH | SW_PUSH_SMALL | SW1 |
| 1 | TRANSF1 | Murata56000C | TR1 |
| 7 | UF4007 | diode_do35 | D1, D2, D5, D6, D7, D8, D9 |
| 3 | 1N4148 | diode_do35 | D3, D4, D10 |
| 1 | LED | LED-3MM | D11 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BAT43 | diode_do35 | D12 |
| 2 | 100NF 100nF | C_Disc_D3_P2.5 | C1, C6 |
| 1 | 100nF | C_Disc_D3_P2.5 | C2 |
| 1 | 18PF CP | CP_4x7mm | C3 |
| 1 | 18PF 100nF | C_Disc_D3_P2.5 | C4 |
| 1 | 10UF 100nF | C_Disc_D3_P2.5 | C5 |
| 1 | 10K 22 | RC03 | R1 |
| 2 | 680 4k7 | RC03 | R2, R5 |
| 1 | 680 82 | RC03 | R3 |
| 1 | 4K7 4k7 | RC03 | R4 |
| 3 | 3K3 1k | RC03 | R6, R7, R10 |
| 1 | 4k7 | RC03 | R8 |
| 2 | 3K3 1k5 | RC03 | R9, R14 |
| 1 | 120 330 | RC03 | R11 |
| 1 | 270 390 | RC03 | R12 |
| 1 | 3K3 10k | RC03 | R15 |
Mfx link design files
The KiCad project lives in the GBert/misc repository on GitHub; these links point at the commit this page was built from.
Mfx link: common questions
What microcontroller does the Mfx link use?
The Mfx link is built around the SN65HVD230, from the PIC family.
How big is the Mfx link PCB?
The Mfx link measures 50 × 50 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mfx link?
53 components, from 36 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Mfx link design files?
From the GBert/misc repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Mfx link design in my own project?
The repository has no license, so all rights stay with GBert. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Mfx link without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.
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