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Your cart is empty.Product Description
- A display module with 4 common anode tubes (0.56 inches) for clock display.
- Its driver IC is TM1637, and 2 signal lines can make the single chip computer control 4-bit 8-digit digital tube.
- Driver IC: TM1637;
- Digital tube:0.56 inch;
- Voltage:5V;
- Material: plastic, metal;
- Color: Yellow/white/red/green/blue;
- Included:5xTM1637 0.56" LED display nixie tube.
Gene337
2025-07-18 12:25:38
All good but 2 issues. Can't tell which one is which color till you power it on, and the white led is much brighter then other colors, by alot!But great product.
Joel Styer
2025-07-08 12:44:45
I bought these mainly so I could see the different colors to pick ones I liked best for a few projects. I did a quick power up on each and four were blank as expected but the red one had a bright 8 at the first digit. Investigating more, two pins (15 & 16) on the TM1637 chip had a solder bridge between them, removing it corrected the problem.I am using these with an STM32L0 processor. The displays are running at 5V while the processor is at 3.3V, no issues since I am using 5V tolerant open drain pins. I did add 3K pullups to 3.3V to lower the line impedance somewhat and still have acceptable signal levels for the TM1637 chip. After writing some code, nothing happened. I checked the signal lines and sure enough the capacitors were dragging the signal down as many on the internet have pointed out in videos. Removing that solved the problem. All units work fine.Most of the displays are fairly bright except for the green, which is the older yellowish green (570nm-ish). It is bright enough but not in the class of the others. The yellow display is actually orange in my opinion. The driver chip (TM1637) runs fairly cool to the touch, I can discern just a tiny bit of heat with my finger.Even though the displays clearly have a decimal point, it seems to be permanently disabled. The colon is activated by bit 7 (msb) of digit C1 (and digit from left). This is disappointing as I had intended to use these as decimal displays.For anyone writing their own code, you must release (raise high) the SDA line during the ACK period, otherwise some strange behavior occurs. And note that these do not use the standard I2C protocol, there is no unit address, otherwise the code is somewhat similar but it needs to be bit-banged in most cases instead of using on-chip I2C controllers.
Chuck
2025-06-26 10:08:00
Liked: displays are clear and function as advertisedDisliked: These are **CLOCK** displays - while the display units HAVE decimal points, they are apparently not wired up. When the TM1637 is given the message to illluminate one of these, nothing happens. The colon IS wired up.Despite what some other reviews state, there IS a way to tell the color of the display without testing it: the displays themselves are marked with a model number; one of these ends with "W" and this one is white; one ends with G and is green; same for blue and yellow; the red one, paradoxically, has a serial number ending in S-1 -- go figure!
tom29928
2025-06-19 14:17:20
I built a swim lap timer with this display, and it works!I used a pi pico, micropython, and tm1637.py from reddit. It worked the first try! VERY HAPPY.
Christopher Pierce
2025-04-02 15:56:12
My biggest complaint is that they are not marked as to which color is which. That said, I have ordered 4 sets of these for use in multi- time zone clocks and the clocks work fantastic, the colors are good and bright. I would/will be purchasing again simply because they function properly.
Jayden Kehn
2025-02-12 18:49:27
1 out of 5 of them worked, so 1 out of 5 stars
MaxMach
2025-02-11 10:56:55
There is no way I can see to tell what color each of these are, other than having to solder every single unit and power up. The packages and units have alphanumeric codes on them but nothing obvious if these indicate color. If the seller/manufacturer sees this, please give us the code breakdown. Thank you.
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