IbScaleSeqRails
About the IbScaleSeqRails PCB
IbScaleSeqRails is an open source PCB design by ibScale, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 203 × 64 mm, with 287 components from 71 distinct parts.
Other key parts include the DS28E07P, AT21CS01, NE555D, 74HC595 and LM78M05. By type, the board carries 72 resistors, 58 ICs, 52 diodes, 45 capacitors, 29 connectors and 25 switches.
From the project
Sequential feeder rails with power protection for the LumenPNP
Enhanced feeder rails for the Opulo LumenPNP. Provides power-up sequencing and port protection. These are desgined to be a drop-in replacement for the stock rails.
A fully loaded LumenPNP can have 50 feeders connected to the 24V feeder bus, each with its own 100uF input capacitor. When the machine powers up, every feeder starts charging its input capacitors at the same time. This massive capacitive load can sag (brown-out) the 24V bus or trip the power supply's over-current protection, causing the machine to restart or fail to power on.
Main components on the IbScaleSeqRails
IbScaleSeqRails bill of materials (BOM)
287 components, 71 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 25 | DS28E07P | DS28E07_MULTI | U1, U3, U5, U7, U9, U11, U13, U15 +17 |
| 25 | AT21CS01 | SOT-23_Handsoldering | U2, U4, U6, U8, U10, U12, U14, U16 +17 |
| 2 | NE555D | SOIC-8_3.9x4.9mm_P1.27mm | U25, U53 |
| 4 | 74HC595 | SOIC-16_3.9x9.9mm_P1.27mm | U26, U27, U54, U55 |
| 2 | LM78M05 | TO-252-2 | U28, U56 |
| 4 | 2N7002NXBKR 2N7002 | SOT-23_Handsoldering | Q1, Q2, Q4, Q5 |
| 2 | DMP68D1LQ-7 DMP68D | SOT-23_Handsoldering | Q3, Q6 |
| 1 | Slot1 | AVX-915-005-541-Contact-Surface | J1 |
| 1 | Slot2 | AVX-915-005-541-Contact-Surface | J2 |
| 1 | Slot3 | AVX-915-005-541-Contact-Surface | J3 |
| 1 | Slot4 | AVX-915-005-541-Contact-Surface | J4 |
| 1 | Slot5 | AVX-915-005-541-Contact-Surface | J5 |
| 1 | Slot6 | AVX-915-005-541-Contact-Surface | J6 |
| 1 | Slot7 | AVX-915-005-541-Contact-Surface | J7 |
| 1 | Slot8 | AVX-915-005-541-Contact-Surface | J8 |
| 1 | Slot9 | AVX-915-005-541-Contact-Surface | J9 |
| 1 | Slot10 | AVX-915-005-541-Contact-Surface | J10 |
| 1 | Slot11 | AVX-915-005-541-Contact-Surface | J11 |
| 1 | Slot12 | AVX-915-005-541-Contact-Surface | J12 |
| 2 | IN | JST_PH_B5B-PH-SM4-TB_1x05-1MP_P2.00mm_Vertical | J13, J27 |
Show 51 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | OUT | JST_PH_B5B-PH-SM4-TB_1x05-1MP_P2.00mm_Vertical | J14, J28 |
| 1 | Slot13 | AVX-915-005-541-Contact-Surface | J15 |
| 1 | Slot14 | AVX-915-005-541-Contact-Surface | J16 |
| 1 | Slot15 | AVX-915-005-541-Contact-Surface | J17 |
| 1 | Slot16 | AVX-915-005-541-Contact-Surface | J18 |
| 1 | Slot17 | AVX-915-005-541-Contact-Surface | J19 |
| 1 | Slot18 | AVX-915-005-541-Contact-Surface | J20 |
| 1 | Slot19 | AVX-915-005-541-Contact-Surface | J21 |
| 1 | Slot20 | AVX-915-005-541-Contact-Surface | J22 |
| 1 | Slot21 | AVX-915-005-541-Contact-Surface | J23 |
| 1 | Slot22 | AVX-915-005-541-Contact-Surface | J24 |
| 1 | Slot23 | AVX-915-005-541-Contact-Surface | J25 |
| 1 | Slot24 | AVX-915-005-541-Contact-Surface | J26 |
| 1 | Slot25 | AVX-915-005-541-Contact-Surface | J29 |
| 25 | TPS1H000AQDGNRQ1 TPS1H000A | MSOP-8-1EP_3x3mm_P0.65mm_EP1.95x2.15mm_ThermalVias | S1, S2, S3, S4, S5, S6, S7, S8 +17 |
| 1 | 1 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | 2 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | 3 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | 4 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D4 |
| 1 | 5 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5 |
| 1 | 6 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D6 |
| 25 | SS34 | D_SMA_Handsoldering | D7, D8, D9, D10, D11, D12, D19, D20 +17 |
| 1 | 7 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D13 |
| 1 | 8 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D14 |
| 1 | 9 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D15 |
| 1 | 10 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D16 |
| 1 | 11 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D17 |
| 1 | 12 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D18 |
| 1 | 13 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D25 |
| 1 | 14 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D26 |
| 1 | 15 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D27 |
| 1 | 16 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D28 |
| 1 | 17 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D29 |
| 1 | 18 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D30 |
| 1 | 19 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D37 |
| 1 | 20 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D38 |
| 1 | 21 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D39 |
| 1 | 22 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D40 |
| 1 | 23 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D41 |
| 1 | 24 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D42 |
| 1 | 25 | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D49 |
| 2 | 5V | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D51, D52 |
| 35 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +27 |
| 4 | 4.7u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C19, C37, C42 |
| 2 | 10n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C18, C41 |
| 4 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C20, C23, C43, C46 |
| 50 | 470r | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8 +42 |
| 8 | 2.2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R25, R29, R30, R34, R59, R63, R64, R68 |
| 8 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R26, R31, R32, R33, R60, R65, R66, R67 |
| 4 | 60.4r | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R27, R28, R61, R62 |
| 2 | 820r | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R71, R72 |
IbScaleSeqRails design files
The KiCad project lives in the ibScale/ibScaleSeqRails repository on GitHub; these links point at the commit this page was built from.
- LayoutibScaleSeqRails.kicad_pcb
- SchematicibScaleSeqRails.kicad_sch
IbScaleSeqRails: common questions
How big is the IbScaleSeqRails PCB?
The IbScaleSeqRails measures 203 × 64 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the IbScaleSeqRails?
287 components, from 71 distinct parts. The full bill of materials is listed on this page.
Where can I download the IbScaleSeqRails design files?
From the ibScale/ibScaleSeqRails repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the IbScaleSeqRails design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which ibScale chose for the repository.