4 layers40.3 × 22.9 mm
4 layers30.1 × 65.1 mm
Time4pi
Slenderman00/time4piThis is how we calibrate the loop.\ Drift = (Actual Time - Expected Time) / Expected Time\ PLL = (5,000,000 kHz × (1 + Drift)) / 32.768 kHz
- Size
- 30.1 × 65.1 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 89
- Pads
- 293
- Tracks, vias
- 201, 162
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 24 Nov 2024
- Updated
- 25 Nov 2024
Overview
Time4pi is an open-source printed circuit board by Slenderman00, from the Slenderman00/time4pi repository on GitHub. It is a 4-layer board of 30.1 × 65.1 mm with 42 parts on 89 nets, routed with 201 tracks and 162 vias.
It is built around the ICE40UP5K-SG48ITR50 and ADF4158CCP. Its parts include 23 capacitors, 6 ICs, 5 resistors, 3 connectors and 2 transistors. It belongs with the FPGA and CPLD boards of this library.
Main components
2README
readme.mdThis is how we calibrate the loop.
Drift = (Actual Time - Expected Time) / Expected Time
PLL = (5,000,000 kHz × (1 + Drift)) / 32.768 kHz
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitor_SMD:C_0201_0603Metric | C17, C19, C20, C23, C25 |
| 4 | 100pF | Capacitor_SMD:C_0201_0603Metric | C1, C2, C3, C4 |
| 3 | 10uF | Capacitor_SMD:C_0201_0603Metric | C21, C22, C24 |
| 2 | 100k | Resistor_SMD:R_0201_0603Metric | R4, R5 |
| 2 | 100pf | Capacitor_SMD:C_0201_0603Metric | C8, C9 |
| 2 | 10nF | Capacitor_SMD:C_0201_0603Metric | C12, C13 |
| 2 | 1uF | Capacitor_SMD:C_0201_0603Metric | C16, C18 |
| 2 | BFR92 | Package_TO_SOT_SMD:SOT-323_SC-70 | Q3, Q4 |
| 2 | Conn_Coaxial_Small | Connector_Coaxial:SMA_Amphenol_901-143_Horizontal | J3, J4 |
| 1 | LSI:rpi zero edge cut | ||
| 1 | 0.1uf | Capacitor_SMD:C_0201_0603Metric | C6 |
| 1 | 100 Ohm | Resistor_SMD:R_0201_0603Metric | R1 |
| 1 | 1000pF | Capacitor_SMD:C_0201_0603Metric | C11 |
| 1 | 10k | Resistor_SMD:R_0201_0603Metric | R2 |
| 1 | 10uf | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C10 |
| 1 | 10uf | Capacitor_SMD:C_0201_0603Metric | C5 |
| 1 | 15pf | Capacitor_SMD:C_0201_0603Metric | C7 |
| 1 | 33 Ohm | Resistor_SMD:R_0201_0603Metric | R3 |
| 1 | ADF4158 | Package_CSP:LFCSP-24-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U3 |
| 1 | ECOC 7050 | LSI:ECOC 7050 | U1 |
| 1 | HMC361S8G/361S8GE | LSI:HMC361S8G361S8GE | U2 |
| 1 | ICE40UP5K-SG48ITR | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U6 |
| 1 | LOGO | LSI:heimonen-solutions-16 | G*** |
| 1 | LOGO | LSI:lsi-logo-16 | G*** |
| 1 | LT1761-1.2 | Package_TO_SOT_SMD:TSOT-23-5 | U4 |
| 1 | LT1761-2.5 | Package_TO_SOT_SMD:TSOT-23-5 | U5 |
| 1 | Raspberry_Pi_2_3 | Module:Raspberry_Pi_Zero_Socketed_THT_FaceDown_MountingHoles | J1 |
Questions
How big is the Time4pi PCB?
It measures 30.1 × 65.1 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Time4pi use?
42 parts, built around the ICE40UP5K-SG48ITR50 and ADF4158CCP. 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 Time4pi KiCad files?
From the Slenderman00/time4pi repository on GitHub, at the commit this page was made from: the board is time4pi.kicad_pcb and its schematic time4pi.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Time4pi design in my own project?
Its repository states no licence, so its author keeps all rights: ask Slenderman00 before reusing the design.
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