Summary of HEADS UP: SMART GLASS MULTIMETER
Parts used in the Google Glass-like Multimeter:
- OLED screen
- Bluetooth module
- Custom PCB with controller
- Battery charger
- CPU from an existing Arduino module
- Mirror and lens for optics
Sometimes it is hard to probe a circuit and then look over at the meter. [Electronoobs] decided to fix that problem by making a Google Glass-like multimeter using an OLED screen and Bluetooth module.
The custom PCB doesn’t have many surprises. A small board has a controller, a battery charger, a display, and a Bluetooth module. One thing he did forget is a switch, though, so the board is always on unless you arrange an external switch.
The CPU was pulled from an existing Arduino module which, we suppose, has the virtue of having a bootloader already set up, but we’d probably just use a new chip if we were building it. The optics require a mirror and lens so you can see the display in focus. Paradoxically, the display is in the back, allowing you to focus on it easily.
If you haven’t used the Bluetooth modules before, this is a good introduction project and shows two ways to connect the modules together.
We should mention, the project took inspiration from a similar project by [Alain Mauer] over on Hackaday.io. We’ve seen plenty of designs for these glasses-mounted displays, including a good one by a 13-year-old.
Source: HEADS UP: SMART GLASS MULTIMETER
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What problem does this project solve?
It solves the difficulty of probing a circuit while looking over at a meter by using a Google Glass-like multimeter. -
How does the display work?
The display is placed in the back and uses a mirror and lens so you can see it in focus easily. -
Does the device have a built-in power switch?
No, the custom PCB lacks a switch, meaning the board is always on unless an external switch is arranged. -
Where was the CPU sourced from?
The CPU was pulled from an existing Arduino module which already had a bootloader set up. -
Why use an Arduino CPU instead of a new chip?
The article suggests the virtue is having a pre-set bootloader, though the author would likely use a new chip if building it themselves. -
Is this a good introduction project for Bluetooth modules?
Yes, it serves as a good introduction project that shows two ways to connect the modules together. -
Who inspired this project?
The project took inspiration from a similar design by [Alain Mauer] found on Hackaday.io.
