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The Oscilloscope Clock V, GPS module driven with new firmware and several improvements to pc board design. Time base of 1PPS or hertz.
19 backers pledged $4,335 to help bring this project to life.

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$4,335

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What is a prototype?

A prototype is a preliminary model of something. Projects that offer physical products need to show backers documentation of a working prototype. This gallery features photos, videos, and other visual documentation that will give backers a sense of what’s been accomplished so far and what’s left to do. Though the development process can vary for each project, these are the stages we typically see:

Proof of Concept

Explorations that test ideas and functionality.

Functional Prototype

Demonstrates the functionality of the final product, but looks different.

Appearance Prototype

Looks like the final product, but is not functional.

Design Prototype

Appearance and function match the final product, but is made with different manufacturing methods.

Production Prototype

Appearance, function, and manufacturing methods match the final product.

D23534893032af8c07d1503395d9d0ca original.jpg?ixlib=rb 2.1

Prototype Gallery

These photos and videos provide a detailed look at this project’s development.

The OSC4.4 version of the oscilloscope clock has several improvements in the hardware & firmware. The most significant change is the capability to add a GPS module to the pc board, which makes it possible to set the time & date automatically and to use the one pulse per second output from the module as a time base instead of the line frequency. It's also possible to use an external 1PPS TTL signal as a time base. Other improvements include several changes in the design for easier component placement and changes to the firmware to make it possible to select the GPS autoset and time zone.

 

The OSC4.4 Oscilloscope clock with a gps module, built with a DG7-6 CRT.
The OSC4.4 Oscilloscope clock with a gps module, built with a DG7-6 CRT.

 

The first prototype, with the gps module piggybacked on the board in back.
The first prototype, with the gps module piggybacked on the board in back.

 

OSC4.4 on the 2BP1 CRT.
OSC4.4 on the 2BP1 CRT.

 

Close up of the gps module and antenna in the back.
Close up of the gps module and antenna in the back.

 

The OSC4.4 board built with the 6LO1i crt.
The OSC4.4 board built with the 6LO1i crt.

 

The 6Lo1i build with the GPS module & antenna in back.
The 6Lo1i build with the GPS module & antenna in back.

The OSC4.4 version also still has all the features from the OSC4.3, such as the battery backup option using a nine volt battery, and the firmware with the user selectable pre-programmed on / off times to turn the CRT display on & off at the pre-selected times.

A second prototype using the DG7-6 CRT.
A second prototype using the DG7-6 CRT.

When the date display is selected, the date will display in mm/dd/yy format using the digital clock portion of the display on the seconds count from 50 - 53. 

The side view showing the gps module connected to the back of the OSC4.4 pc board, and the small antenna.
The side view showing the gps module connected to the back of the OSC4.4 pc board, and the small antenna.

The kit for the second reward includes the pc board, transformer and components to populate the board. Many GPS module types can be added to the board using the "port" embedded in the board behind the relay in the battery backup section.

The points on the board can be connected to the gps module port.
The points on the board can be connected to the gps module port.

The time base can be selected from either the hertz (line frequency of 50 or 60 HZ) or the 1PPS output from the GPS module (if so equipped) by selecting 1PPS option in the firmware.

Close up detail of the gps module on the 2nd prototype.
Close up detail of the gps module on the 2nd prototype.

 

 

A DG7-6 OSC4.4 clock next to the 2BP1 version.
A DG7-6 OSC4.4 clock next to the 2BP1 version.

 A youtube video of the DG7-6 version next to the 2BP1:

Two oscilloscope clocks

Side view of the 2BP1 version.
Side view of the 2BP1 version.

 

Risks and challenges

The biggest challenge with this project was to integrate the gps module & OSC4.4 board. The firmware & hardware had to undergo re-design to allow the module to work properly with both. Many different module types were tested and most worked well, but the one used for the most prototypes was selected as the one most optimal in form & function.

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Support

  1. Select this reward

    Pledge US$ 45 or more About US$ 45

    OSC4.4 board

    The first reward is the OSC4.4 board and chip. It includes the board and the preprogrammed microcontroller. Using the parts list and directions, a skilled and experienced electronic kit builder could build the driver board & assemble it to their own CRT and install it in their own enclosure, and even add their own GPS module. This board will drive only smaller, relatively low voltage CRTs, like the 2BP1 or 2AP1, DG7-6 or 6Lo1i.

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  2. Select this reward

    Pledge US$ 145 or more About US$ 145

    OSC4.4 Kit

    Build it yourself ! The OSC4.4 kit includes the pc board, transformer, wires, components to populate the board and IC's including the preprogrammed microcontroller. You can source your own crt & GPS module and build your own enclosure. Many small relatively low voltage crts will work with the kit, such as the 2BP1, 2AP1, 6LO1i, DG7/6 and other types. This is a really challenging DIY project but can be very rewarding to the builder in building it accurately and adjusting & tweaking the controls to optimize the display. This board will drive only smaller, relatively low voltage CRTs, similar to those mentioned above.

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  3. Select this reward

    Pledge US$ 185 or more About US$ 185

    OSC4.4 Kit with GPS module

    Build it yourself ! The OSC4.4 kit with GPS module includes the pc board, transformer, wires, components to populate the board and IC's including the preprogrammed microcontroller and the GPS module with the antenna. You can source your own crt and build your own enclosure. Many small relatively low voltage crts will work with the kit, such as the 2BP1, 2AP1, 6LO1i, DG7/6 and other types. This is a really challenging DIY project but can be very rewarding to the builder in building it accurately and adjusting & tweaking the controls to optimize the display.

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  4. Select this reward

    Pledge US$ 215 or more About US$ 215

    OSC4.4 Kit w/ GPS module & enclosure

    With this reward, you can specify your own dimensions for the homemade enclosure to accommodate your CRT.
    Build it yourself ! The OSC4.4 kit with GPS module and enclosure includes the pc board, transformer, wires, components to populate the board and IC's including the preprogrammed microcontroller and the GPS module with a custom built enclosure to your size specifications. You can source your own crt and choose the dimensions of your homemade enclosure. Many small relatively low voltage crts will work with the kit, such as the 2BP1, 2AP1, 6LO1i, DG7/6 and other types. This is a really challenging DIY project but can be very rewarding to the builder in building it accurately and adjusting & tweaking the controls to optimize the display. This board will drive only smaller, relatively low voltage CRTs, like the 2BP1 or 2AP1, DG7-6 or 6Lo1i.

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  5. Select this reward

    Pledge US$ 285 or more About US$ 285

    OSC4.4 clock assembled

    A fully assembled OSC4.4 oscilloscope clock including gps module with the 2BP1/2AP1 (2" round) CRT & homemade plexiglass case including the 1/4" thick base and 1/8" thick shroud or dust cover. Uses the 2" diameter 2BP1 or 2AP1 crt. Easy to set for 120VAC (standard U.S.) or 240VAC (some other countries) and automatically sets for 60HZ or 50HZ or 1PPS if selected.

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  6. Select this reward

    Pledge US$ 345 or more About US$ 345

    Deluxe OSC4.4 clock assembled

    A fully assembled OSC4.4 clock with the homemade enclosure and GPS module including battery backup with choice of CRT from 2AP1/2BP1, 6LO1i or DG7-6 or using the pledger's selection depending on compatibility & availability. Optional pc board in blue with yellow silkscreen or the standard green w/ white and also an optional blue tint or clear plexiglass for the shroud (dust cover). The OSC4.4 can be set for either 120VAC or 240VAC. Will automatically set for 60HZ or 50HZ or 1PPS (if selected). The GPS module will set the time automatically when selected, and also the date if selected, and I will program it to default to your time zone.

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Funding period

- (30 days)