Here is a simple little project that everybody can make and modify to meet their needs. First you need a :spark: core; then you need an 1.2 inch LED display with i2c backpack from Adafruit. And you need a one-wire temperature sensor . And three 4.7K resistors. The display very nicely has separate …

Awesome!! Those are some big displays! How much current are they rated at?

Hi @mohit , The Adafruit datasheet does not say, but there are two LEDs per segment in the seven segment display plus some dots, so I count 61 total LEDs. That implies that it could be a bit over 1 amp total at full brightness. Just for fun, I will stick a meter on it tonight and report back. I t…

Well I put the ammeter on the +5 for the LED display and the meter would not settle down, so they must be switching the LEDs in the driver chip. I would estimate around 100mA or so but you would need a scope and a precision shunt to to see the AC behavior of the power. I am powering it with a iPad…

Check the LED screens this guy is using. They look perfect for a time and temp display. [image] Holtek HT1632C LED Driver Library Hi I’m porting the Arduino library for the HT1632C LED driver that uses some dot matrix displays like Sure Electronics ones. Right now it’s in ALPHA stage …

Time and Temp Project

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RWB February 25, 2014, 4:08am 5

Check the LED screens this guy is using. They look perfect for a time and temp display.

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Time and Temp Project

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