Maybe he needs to add that he wants a 3-digit or 4-digit LED display.how are you going to display temperatures between -10°C and +150°C on a single digit? That’s why we all thought you were making a bargraph.
Maybe he needs to add that he wants a 3-digit or 4-digit LED display.how are you going to display temperatures between -10°C and +150°C on a single digit? That’s why we all thought you were making a bargraph.
Or displays multiple digits as it rapidly moves through the air. . .Maybe he needs to add that he wants a 3-digit or 4-digit LED display.
Yes I will need more than 1 7-segment, probable 3 7-segment would be good. I will look at the LCP824 and will probably will go with that.I like the LPC824 because it has a built in 12-bit ADC. You can also implement a look-up table to determine the temperature from the resistance of a thermistor, which makes the sensor much cheaper than a thermocouple or a temperature sensor IC.
But if you have a single 7-segment display, how are you going to display temperatures between -10°C and +150°C on a single digit? That’s why we all thought you were making a bargraph.
Now you’ll need an LED driver because the LPC824 doesn’t have enough output pins to drive 24 segments, or you’ll have to multiplex it.Yes I will need more than 1 7-segment, probable 3 7-segment would be good. I will look at the LCP824 and will probably will go with that.
That's the first chip that came to mind if he wants to directly link the ADC to the 3x7-seg display.take a look at the ICL7106, so old that the data sheet is written in Latin, but still available. Carpe Diem.
That seems to be a great idea. Using I2C would greatly reduce the amount of wire required. I will have to take a look at this, thanks.That's the first chip that came to mind if he wants to directly link the ADC to the 3x7-seg display.
However, there are some 4x7-seg LED displays from companies like Adafruit that have a small I2C to LED driver chip mounted to them so he could control it by 2-wires serial ( plus supply and ground) if he wants to go the microcontroller route.
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You can't have that with a two digit display. If you want 150 Degrees C you need a 3 digit display and if you want 0.1 degree resolution that's a four digit display.I would need a range of temperature from -10 degrees Celsius to 150 degrees Celsius. I will look at the LM35 and the LM3914 and see if I can figure out how it works.
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