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Firmware (HEX) file and C source code for the High Visibility 6-Digit LED GPS Clock [1911015D.HEX]
HEX file and C language source code for the PIC32MX170F256B 32-bit microcontroller in the GPS-Enabled 6-Digit LED Clock.
Firmware version B (1.1) fixes a bug in the 12 hour mode.
Firmware version C (1.2) also fixes a bug in the minutes roll-over for time zones with an offset not in whole hours.
Firmware version D (1.3) fixes a regression and also adds a remote control button code to switch between local time and UTC/GMT (default: Teletext).
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MCP1700 3.3V LDO (TO-92)
A 3.3V low-dropout regulator in TO-92 package (MCP1700-3302E/TO).
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VK2828U7G5LF TTL GPS/GLONASS/GALILEO module with antenna and cable
A VK2828U7G5LF GPS module from GMOUSE. Data sheet is available at https://github.com/CainZ/V.KEL-GPS/blob/master/VK2828U7G5LF%20Data%20Sheet%2020150902.pdf
Features onboard ceramic patch antenna. Basic specifications are:
- 28 x 28 x 8.6mm
- 3.3-5V supply at 25-35mA
- TTL signalling, default 9600 baud
- Enable input, 1PPS output plus serial TX & RX with NMEA 0183
- Tracking sensitivity -162dBm, capture sensitivity -160dBm
- Cold start 26 seconds, hot start one second
- 1-10Hz updates
A short 6-way cable with plug is supplied. If you order this, you may receive a VK2828U8G5LF which is an updated version of the module with slightly better specifications but provides the same functions.
| Cat No SC3362. Price: AUD $25.00 1 |
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In stock:  yes (12 available). Estimated dispatch time: 1-3 days | Related to:
- Project: A GPS-Synchronised Clock (March 2009 [print issue] [online issue])
- Project: A GPS-Synchronised Clock (March 2009 [print issue] [online issue])
- Project: Dead-Accurate 6-Digit GPS-Locked Clock, Pt.1 (May 2009 [print issue] [online issue])
- Project: GPS Driver Module For The 6-Digit Clock, Pt.2 (June 2009 [print issue] [online issue])
- Project: GPS Synchronisation For Clocks With Sweep Hands (November 2009 [print issue] [online issue])
- Project: GPS Synchronisation For Clocks With Sweep Hands (November 2009 [print issue] [online issue])
- Project: A Multi-Function GPS Car Computer, Pt.1 (January 2010 [print issue] [online issue])
- Project: A Multi-Function GPS Car Computer, Pt.2 (February 2010 [print issue] [online issue])
- Project: Build A GPS Boat Computer (October 2010 [print issue] [online issue])
- Project: A 2.5GHz 12-digit Frequency Counter, Pt.1 (December 2012 [online issue])
- Project: A 2.5GHz 12-Digit Frequency Counter, Pt.2 (January 2013 [print issue] [online issue])
- Project: Accurate GPS 1pps Timebase For Frequency Counters (February 2013 [online issue])
- Project: Deluxe GPS 1pps Timebase For Frequency Counters (April 2013 [print issue] [online issue])
- Project: Build A GPS Tracker & Record Your Journeys (November 2013 [print issue] [online issue])
- Project: L-o-o-o-n-g Gating Times For The 12-Digit Counter (July 2014 [print issue] [online issue])
- Project: 6-Digit Retro Nixie Clock Mk.2, Pt.1 (February 2015 [print issue] [online issue])
- Project: 6-Digit Retro Nixie Clock Mk.2, Pt.2 (March 2015 [print issue] [online issue])
- Project: High Visibility 6-Digit LED GPS Clock (December 2015 [print issue] [online issue])
- Project: High Visibility 6-Digit LED GPS Clock, Pt.2 (January 2016 [print issue] [online issue])
- Project: Touch-Screen Boat Computer With GPS (April 2016 [print issue] [online issue])
- Project: Touchscreen Super Clock (July 2016 [print issue] [online issue])
- Project: GPS-synchronised Analog Clock Driver (February 2017 [print issue] [online issue])
- Circuit Notebook: Remote water level monitoring using LoRa and Arduino (July 2017 [print issue] [online issue])
- Project: An Arduino Data Logger with GPS (August 2017 [print issue] [online issue])
- Project: Arduino Data Logger Part 2 (September 2017 [print issue] [online issue])
- Feature: El Cheapo Modules Part 10: GPS receivers (October 2017 [print issue] [online issue])
- Project: Super Clock now shows your electricity tariff (July 2018 [print issue] [online issue])
- Project: GPS-synched Frequency Reference Pt.1 (October 2018 [print issue] [online issue])
- Project: GPS-synched, lab-quality frequency reference (Part 2) (November 2018 [print issue] [online issue])
- Project: Very accurate speedo, car clock & auto volume change (June 2019 [print issue] [online issue])
- Project: Advanced GPS Computer - Part 1 (June 2021 [print issue] [online issue])
- Project: Advanced GPS Computer – Part 2 (July 2021 [print issue] [online issue])
- Project: New GPS-Synchronised Analog Clock (September 2022 [print issue] [online issue])
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| View 117 other items relevant to the same project(s) |
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Six 70mm tall 7-segment displays, BLUE plus four matching diffused 5mm LEDs
Six 70mm tall 7-segment Common Anode displays plus four matching diffused 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project.
The digit visible size is 32.2 x 56.9mm and the part code is LBT23101BB. These are pin compatble with the Kingbright SA23-11 series. They are bright and highly efficient; see Fig.3 on page 44 of the December 2015 issue for the I/V curve.
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Six 70mm tall 7-segment displays, EMERALD GREEN plus four matching 5mm LEDs
Six 70mm tall 7-segment Common Anode displays plus four matching 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project.
The digit visible size is 32.2 x 56.9mm and the part code is LBT23101BGG or FJS23101DPG. These are pin compatble with the Kingbright SA23-11 series. They are bright and highly efficient; see Fig.3 on page 44 of the December 2015 issue for the I/V curve.
Note: we were originally supplying C503B-GCN-CY0C0791 LEDs which have a clear lens however we have now switched to an unknown type of green LED with the following specifications, which is an excellent match to the 7-segment displays: 515-525nm, 4000-4500mCd. Note that these are so bright that you might have to increase the current limiting resistor for the colon drive to get them to match the 7-segment display.
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Six 70mm tall 7-segment displays, HIGH BRIGHTNESS RED plus four matching diffused 5mm LEDs
Six 70mm tall 7-segment Common Anode displays plus four matching diffused 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project.
The digit visible size is 32.2 x 56.9mm and the part code is either CAI23101BS or SA23-11SRWA, depending on which is in stock. These are pin compatble with the Kingbright SA23-11 series. They are bright and highly efficient; see Fig.3 on page 44 of the December 2015 issue for the I/V curves.
The best-matching 5mm LEDs we can find are TLDR5400 type. These are bright and diffuse with no hint of orange.
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Six 70mm tall 7-segment displays, GREEN plus four matching diffused 5mm LEDs
Six 70mm tall 7-segment Common Anode displays plus four matching diffused 5mm LEDs, to suit the High Visibility 6-Digit LED Clock project.
The digit visible size is 32.2 x 56.9mm and the part code is SA23-11GWA. They are relatively bright if driven with sufficient current; see Fig.3 on page 44 of the December 2015 issue for the I/V curves.
The 5mm LEDs supplied are LTL2R3KGD which we find has a very similar colour. LTL2R3KG are a close second.
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Blue 5mm LED with diffused lens (25mm leads)
A high-brightness blue LED in a 5mm through-hole package with standard lead length (25mm) and diffused lens. Quite good brightness at 3V and can be driven with just a few milliamps.
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Blue 5mm LED with diffused lens (15mm leads)
A high-brightness blue LED in a 5mm through-hole package with 15mm lead length and diffused lens. Quite good brightness at 3V and can be driven with just a few milliamps.
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40109B level shifter IC (DIP-16)
A CD40109BE quad level shifter IC in a 16-pin DIL package.
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High Visibility 6-Digit LED GPS Clock PCB [19110151]
PCB for the GPS-enabled Six Digit LED Clock.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
303 x 70mm.
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PIC32MX170F256B-I/SP programmed for the High Visibility 6-Digit LED GPS Clock [1911015D.HEX]
A 32-bit PIC microcontroller in 28-pin DIP programmed for the GPS-Enabled 6-Digit LED Clock.
Firmware version B (1.1) fixes a bug in the 12 hour mode.
Firmware version C (1.2) also fixes a bug in the minutes roll-over for time zones with an offset not in whole hours.
Firmware version D (1.3) fixes a regression and also adds a remote control button code to switch between local time and UTC/GMT (default: Teletext).
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High Visibility 6-Digit LED GPS Clock PCB pattern (PDF download) [19110151]
PDF with the PCB design for the GPS-Enabled Six Digit LED Clock (double-sided).
Both layers are in a single PDF. Note that due to the number of vias this would be difficult to etch yourself. It is provided mainly for reference purposes.
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High Visibility 6-Digit LED GPS Clock case cutting diagram (download)
Cutting details for the transparent acrylic case of the GPS-Enabled Six Digit LED Clock.
Each file contains the paths to cut to make a complete case and can be fed to a laser cutter.
The overall dimensions are 341.504 x 215.951mm and you should check this before proceeding with cutting as there can sometimes be scaling issues when importing these files.
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High Visibility 6-Digit LED GPS Clock acrylic case pieces - CLEAR
3mm thick clear acrylic case pieces for the GPS-Enabled Six Digit LED Clock. Six large and six small pieces are provided, all accurately laser cut.
Use acrylic glue and self-tapping screws to complete the case as per the articles. These pieces are clear so suit any colour LED displays.
341.5 x 216mm total size.
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High Visibility 6-Digit LED GPS Clock acrylic case pieces - BLUE TINTED
3mm thick translucent blue acrylic case pieces for the GPS-Enabled Six Digit LED Clock. Six large and six small pieces are provided, all accurately laser cut.
Use acrylic glue and self-tapping screws to complete the case as per the articles. These pieces are blue so suit only blue LED displays.
341.5 x 216mm total size.
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High Visibility 6-Digit LED GPS Clock acrylic case pieces - GREEN TINTED
3mm thick translucent green acrylic case pieces for the GPS-Enabled Six Digit LED Clock. Six large and six small pieces are provided, all accurately laser cut.
Use acrylic glue and self-tapping screws to complete the case as per the articles. These pieces are green so suit only green LED displays. "Emerand green" displays are recommended due to their higher brightness & efficiency.
341.5 x 216mm total size.
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High Visibility 6-Digit LED GPS Clock acrylic case pieces - RED TINTED
3mm thick translucent red acrylic case pieces for the GPS-Enabled Six Digit LED Clock. Six large and six small pieces are provided, all accurately laser cut.
Use acrylic glue and self-tapping screws to complete the case as per the articles. These pieces are red so suit only red LED displays.
341.5 x 216mm total size.
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