This is the HP QDSP-6064 bubble display, a tiny, 4-digit, 7-segment numerical indicator. THis little guy is perfect if you need some user feedback from your system, but don’t want to fiddle with LCDs or other display options. The Bubble Display comes in an easy-to-use 12-pin DIP package and can be used in breadboards, protoboards, or PCBs.
These bubble displays have a peak forward current per segment of 5mA at a peak forward voltage of 2V. Thanks to a neat magnification technique used by the QDSP-6064 (giving it the "bubble" name), the luminosity is intensified making lower power consumption possible.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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Based on 8 ratings:
1 of 1 found this helpful:
When I was hooking the display up, I accidentally lit up a segment with no resistor and it was bright! Luckily it didn't burn out, so I decided to use it directly soldered on the back of an Arduino Pro Mini hooked up with an accelerometer to make a mini pedometer. Remember, it really does use up 12 pins! Overall it's a great little display.
2 of 2 found this helpful:
When these went up for sell for the first time, I purchased one without knowing a project for it--that came later while I was waiting for this to arrive (it became a timer). The total current you will get through each segment is small enough you can use an Arduino to control the common cathodes directly. Use a shift register to control the segments.
3 of 3 found this helpful:
I remember having seen these in calculator from way back. These displays are tiny, easy to use and have very low power consumptions, which makes me wonder why they are considered obsolete and why many stopped building them.
Ive found these to be great to work with. their low current rating allows me to drive them from a microcontroller with ease and their tiny size gives for great adaptibility. Ive mostly been using these as displays for POST(Power-on self-test) messages in my more complex projects to find out if something is malfunctioning.
great price, beautifull display. Stop manufacturing this best piece of technology is big lost for humanity. I have used this dusplay in my retro watch https://www.tindie.com/products/bobricius/wrist-watch-with-retro-display-an-lir2032-rechargeable-battery/
A great way to get information from your project and for less than $3, you can't beat the price.
I use it with the Double Bubble Backpack to make these displays easier to use. They're retired on here but if your lucky you can still find them on google.
This thing is tiny. It actually surprised me how tiny it was. But it's perfectly readable and isn't particularly hard to wire up. I got one working with a Raspberry Pi, a breadboard, some jumpers and resistors, and a few minutes of coding. If you're looking for a small, easy-to-use seven-segment display, this is what you're looking for.
very good quality! very clear, und sooooooooooooooo cuuuuute!