6 layers243.8 × 243.8 mm
Raven
agranlund/raven
Homemade MC68060 + DSP56303 Atari-compatible computer. Hardware, firmware, and software stack
331 parts87
2 layers123 × 30 mm
Ntpstick-1
dave2/ntpstickNTPstick project files - hardware and software
- Size
- 123 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 103
- Nets
- 109
- Pads
- 366
- Tracks, vias
- 856, 72
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 10 Nov 2014
- Updated
- 10 Sep 2015
Overview
Ntpstick-1 is an open-source printed circuit board by dave2, from the dave2/ntpstick repository on GitHub. It is a 2-layer board of 123 × 30 mm with 103 parts on 109 nets, routed with 856 tracks and 72 vias.
It is built around the 24AA02E48-I/SN and W5500. Its parts include 35 capacitors, 28 resistors, 12 connectors, 8 ICs and 7 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
24AA02E48-I/SN
SOIC-8-40℃~+85℃ 1,000,000 cycles 1.7V~5.5V 200 Years 2Kbit 400kHz 5ms I2C Noise suppression function SOIC-8 EEPROM ROHSMicrochip TechnologyEEPROM
W5500
LQFP-48_7x7-40℃~+85℃ 10BASE-T、100BASE-TX 3.3V 32KB SPI SPI Wake-up function、Programmable LED indication、Low-power mode Yes LQFP-48(7x7) Ethernet Controllers ROHSWIZNETEthernet Controllers
README
README.mdntpstick
NTPstick is a GPS-synced NTP server designed for low cost and ease of deployment in places outside traditional datacentres.
The "stick" concept is that the board is expected to be placed into a PVC tube at least 30mm I.D. with only an Ethernet cable reaching the outside world carrying both Ethernet and poor-mans POE.
Structure
This repo is divided into sections for different parts of the project:
- hardware/ .. Contains the Kicad sources, schematics in PDF, and generated gerber files.
- firmware/ .. Completed builds of the firmware, able to be flashed to boards over TFTP
- src/ .. Source code for the firmware.
Specifications
- u.fl GPS antenna connection
- uBlox MAX-M8Q GPS module (includes internal TCXO)
- Atmel ATXMEGA128A4U MCU
- 27MHz VCXO system clock
- 12-bit DAC for VCXO control
- WizNet W5500 Ethernet/IP chip
- DC input on spare Ethernet pairs
- DC-DC first stage, linear second stage PSU
- Board is 113mm long, 30mm wide
License
- Please check each folder for the specific license applied, as they vary between sections of the project.
Parts
103| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | SM0603 | C1, C2, C3, C6, C12, C13, C14, C15, C16, C17 |
| 7 | 100nF | SMD_Packages:SM0603 | C4, C23, C25, C29, C30, C34, C35 |
| 4 | 10uF | Water SMD Cap:c_tant_A | C24, C26, C27, C33 |
| 4 | 1k | SMD_Packages:SM0603 | R2, R5, R16, R27 |
| 4 | 1k | SM0603 | R4, R17, R18, R20 |
| 2 | 10k | SM0603 | R1, R19 |
| 2 | 10nF | SM0603 | C10, C22 |
| 2 | 10uF | c_tant_A | C5, C11 |
| 2 | 10uF | Water SMD Cap:c_1206 | C31, C32 |
| 2 | 150 | SM0603 | R3, R8 |
| 2 | 18pF | SM0603 | C7, C8 |
| 2 | 4.7k | SM0603 | R21, R22 |
| 2 | 49.9 | SM0603 | R12, R15 |
| 2 | 6.8nF | SM0603 | C19, C20 |
| 2 | 75 | SM0603 | R9, R10 |
| 2 | 82 | SM0603 | R13, R14 |
| 2 | DIODE | Walter Diodes:do214ac | D3, D4 |
| 1 | 10 | SMD_Packages:SM0603 | R23 |
| 1 | 10 | SM0603 | R11 |
| 1 | 100k | SMD_Packages:SM0603 | R26 |
| 1 | 12.4k | SM0603 | R7 |
| 1 | 1M | SM0603 | R6 |
| 1 | 22nF | SM0603 | C21 |
| 1 | 24AA02E48 | SOT23-5 | IC3 |
| 1 | 250mA | SMD_Packages:SM0603 | L4 |
| 1 | 25MHz | crystal_smd_5x3.2mm | X1 |
| 1 | 27nH | SMD_Packages:SM0603 | L2 |
| 1 | 3.3uF | SMD_Packages:SM1210 | C28 |
| 1 | 36.0k | SMD_Packages:SM0603 | R25 |
| 1 | 4.7nF | SM1812 | C18 |
| 1 | 4.7uF | SM0603 | C9 |
| 1 | 5V | Pin_Headers:Pin_Header_Straight_1x02 | P7 |
| 1 | 6.49k | SMD_Packages:SM0603 | R24 |
| 1 | 6.8uH | Bourns Inductor:inductor_bourns_srn5040 | L3 |
| 1 | ANTENNA_SHIELD | Walter RF Conn:coaxial_u.fl-r-smt-1 | ANT1 |
| 1 | ANT_TEST | Pin_Headers:Pin_Header_Straight_1x02 | P6 |
| 1 | ATXMEGA128A4-A | SMD_Packages:TQFP44 | IC2 |
| 1 | DAC_TEST | Measurement_Points:Measurement_Point_Round-SMD-Pad_Small | P4 |
| 1 | EIA 568B | pin_strip_8 | P1 |
| 1 | GPS | Pin_Headers:Pin_Header_Straight_1x05 | P2 |
| 1 | INDUCTOR | SMD_Packages:SM0603 | L1 |
| 1 | LMR16006 | SMD_Packages:SOT23_6 | IC4 |
| 1 | LOCK | LED-0805 | D6 |
| 1 | MCP4725AxT-E/CH | SMD_Packages:SOT23_6 | U3 |
| 1 | MOUNT0 | Screws:4-40-HOLE | J1 |
| 1 | MOUNT1 | Screws:4-40-HOLE | J2 |
| 1 | MOUNT2 | Screws:4-40-HOLE | J4 |
| 1 | MOUNT2 | 4-40-HOLE | J3 |
| 1 | NCP1117ST33T3G | SMD_Packages:SOT223 | U2 |
| 1 | NET | LED-0805 | D1 |
| 1 | NP | SMD_Packages:SM0603 | R28 |
| 1 | OSC_TEST | Measurement_Points:Measurement_Point_Round-SMD-Pad_Small | P5 |
| 1 | PDI-SER | Pin_Headers:Pin_Header_Straight_2x05 | P3 |
| 1 | PWR | LEDs:LED-0805 | D2 |
| 1 | SYNC | LED-0805 | D7 |
| 1 | SYS | LED-0805 | D5 |
| 1 | TG110-E*N5_N5 | N5 | U1 |
| 1 | UBLOX-MAX | UBLOX MAX:UBLOX-MAX-8-POLY | U5 |
| 1 | VAL** | LOGO_CC_SA_1.9mm | LOGO_CC_SA |
| 1 | VAL** | Dymo 12x24:SERIAL_LABEL | SERIAL_LABEL |
| 1 | VAL** | CC logos:LOGO_CC_BY_1.9mm | LOGO_CC_BY |
| 1 | VAL** | Freetronics Footprints:LOGO_CC_1.9mm | LOGO_CC |
| 1 | VCXO-7x5 | Generic VCXO:vcxo-7x5 | X2 |
| 1 | VIN | Pin_Headers:Pin_Header_Straight_1x02 | P8 |
| 1 | W5500 | lqfp48 | IC1 |
| 1 | val** | Freetronics Footprints:LOGO_OSHW_silkscreen_2mm | LOGO_OSHW_silkscreen_2mm |
| 1 | val** | Freetronics Footprints:FIDUCIAL | FIDUCIAL |
Questions
How big is the Ntpstick-1 PCB?
It measures 123 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ntpstick-1 use?
103 parts, built around the 24AA02E48-I/SN and W5500. 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 Ntpstick-1 KiCad files?
From the dave2/ntpstick repository on GitHub, at the commit this page was made from: the board is hardware/kicad/ntpstick-1.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ntpstick-1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask dave2 before reusing the design.
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