2 layers52.2 × 52.2 mm
Base
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
43 parts3kApache-2.0
2 layers66 × 48.3 mm
Double comparator
JQIamo/double_comparatorDouble comparator board for synchronizing mode-locked lasers
- Size
- 66 × 48.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 22
- Pads
- 104
- Tracks, vias
- 162, 12
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 15 May 2023
- Updated
- 11 Jul 2023
Overview
Double comparator is an open-source printed circuit board by JQIamo, from the JQIamo/double_comparator repository on GitHub. It is a 2-layer board of 66 × 48.3 mm with 43 parts on 22 nets, routed with 162 tracks and 12 vias.
Its parts include 20 resistors, 13 capacitors, 5 connectors and 1 IC.
README
README.mddouble_comparator
Double comparator board for synchronizing mode-locked lasers The design is finished and is currently being tested for performance.
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13 |
| 6 | 49.9 | Resistor_SMD:R_0603_1608Metric | R11, R12, R13, R14, R15, R16 |
| 5 | 1k | Resistor_SMD:R_0603_1608Metric | R8, R17, R18, R19, R20 |
| 4 | 100 | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4 |
| 4 | Conn_Coaxial | local_footprints:BNC_V-BITE_PCB_EDGE | J2, J3, J4, J5 |
| 4 | MountingHole | MountingHole:MountingHole_3mm | H1, H2, H3, H4 |
| 3 | 1.1k | Resistor_SMD:R_0603_1608Metric | R5, R6, R7 |
| 2 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C1, C3 |
| 2 | DNP | Resistor_SMD:R_0603_1608Metric | R9, R10 |
| 1 | ADCMP552 | Package_SO:QSOP-20_3.9x8.7mm_P0.635mm | U1 |
| 1 | Conn_01x02_Pin | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J1 |
Questions
How big is the Double comparator PCB?
It measures 66 × 48.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Double comparator use?
43 parts. 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 Double comparator KiCad files?
From the JQIamo/double_comparator repository on GitHub, at the commit this page was made from: the board is double_comparator.kicad_pcb and its schematic double_comparator.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Double comparator design in my own project?
Its repository states no licence, so its author keeps all rights: ask JQIamo before reusing the design.
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