Difference between revisions of "GPS Frequency Standard"

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*** 3.3V or 5V Arduino support
 
*** 3.3V or 5V Arduino support
 
**** Measured 12 mA with 9V input and 3.3V Arduino Pro Mini
 
**** Measured 12 mA with 9V input and 3.3V Arduino Pro Mini
 +
** BNC connectors on-board
 
* [[PulseGen]] modified to receive input and drive 50 Ohm output
 
* [[PulseGen]] modified to receive input and drive 50 Ohm output
 
* Fits into Aluminum Project Box Enclosure DIY 100*76*35mm - [https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=100*76*35mm+aluminum&_sacat=0&LH_TitleDesc=0&_odkw=100*76*35mm+Aluminum+PCB+Instrument+Box+Enclosure+Electronic+Project+Case+Set&_id=174408274566 ebay search]
 
* Fits into Aluminum Project Box Enclosure DIY 100*76*35mm - [https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=100*76*35mm+aluminum&_sacat=0&LH_TitleDesc=0&_odkw=100*76*35mm+Aluminum+PCB+Instrument+Box+Enclosure+Electronic+Project+Case+Set&_id=174408274566 ebay search]

Revision as of 13:18, 23 June 2022

Build V2

  • Stand-alone design does not require PC
  • NEO-7M GPS
  • Arduino in a Box card
    • Arduino Pro Mini
      • 3.3V, 8 MHz
    • OLED Display
      • Display lock status, set frequency
    • Rotary Encoder Frequency Selection
    • Flexible Input power
      • On-board DC/DC buck regulator allows 7-23V input
      • Direct 7-9V input (USE VRAW jumper)
      • 3.3V or 5V Arduino support
        • Measured 12 mA with 9V input and 3.3V Arduino Pro Mini
    • BNC connectors on-board
  • PulseGen modified to receive input and drive 50 Ohm output
  • Fits into Aluminum Project Box Enclosure DIY 100*76*35mm - ebay search

Build V1

  • NEO-7M GPS
  • FTDI-49MM card set to 3.3V levels
  • Frequency set using ublox software on PC
  • PulseGen modified to receive output from GPS and drive 50 Ohm output out of the box
  • Fits into Aluminum Project Box Enclosure DIY 100*76*35mm - ebay search

GPS

  • GPS Satellite Positioning Module NEO7M UBLOX Satellite Positioning 51 SCM STM32
  • Specifications:
  • Working Voltage: 3.3v-5.0v
  • Color: As Picture Shown
  • Description:
  • With micro USB interface, you can debug GPS module with ordinary phone data cable, no longer need to use USB-TTL and other tools.
  • TTL interface is reserved to facilitate the use of USB-TTL or external microcontroller to control and receive GPS information.
  • Ceramic antenna on module board, no GPS external antenna can be used to search for stars.
  • Reserved SMA antenna interface, can use external antenna, star search ability is stronger.

GPS NEO-7M-03.PNG

OLED Display

Description

  • OLED display, no need backlight, self-illumination.
  • The display performance is better than the traditional LCD display, also lower consumption.

Specifications

  • Driver IC: SSD1306
  • Size: 0.91 inch OLED
  • Resolution: 128 x 32
  • Size: 38 * 12 mm
  • Number of pins: 4 Pin
  • Interface Type: IIC interface
  • Display Color: White
  • Operating temperature:-40 ~ 85 ℃

I2C Pin Out

  1. GND: Power Ground
  2. VCC: Power + (DC 3.3 ~5v)
  3. SCL: Clock Line
  4. SDA: Data Line

OLED-128x32.jpg

Reference Materials

Videos