Hello, i have build a big 7 segment Display made of 11 "SparkFun 7-Segment Display 6.5"" they are all equiped with the " SparkFun Large Digit Driver" with the TPIC6C596 IC. It is running fine untill I increment the number of digits over the 8th digit. As soon as I try to show 9 or more digits, the…

[image] petemanzel: void showNumber(float value) why this parameter is float? Float number has limited accuracy. Use long long number instead

[image] petemanzel: char snumber[10]; This array should have a size of at least 12 if you use sprintf to print an 11-digit number

[image] petemanzel: It is running fine untill I increment the number of digits over the 8th digit. On AVR-based Arduinos, float values are limited to at most 7 decimal digits of accuracy and type double is not supported (treated as four byte float).

Thank you all. This solved my problem: As long long everything works perfectly. [image] b707: [image] petemanzel: void showNumber(float value) why this parameter is float? Float number has limited accuracy. Use long long number instead One more thing. I changed the array size to 12…

Where is the truth - have you solved everything [image] petemanzel: As long long everything works perfectly. or nothing works? [image] petemanzel: But my serialmonitor output is empty.

Sorry for that misunderstanding! :crazy_face: The output on the 7-segment displays works perfectly as mentioned. The output on my serialmonitor is not working as it should. On the serialmonitor I get the Setup-message: Serial.println("Large Digit Driver Example"); But no number is showing up. I …

[image] petemanzel: The output on my serialmonitor is not working as it should. Post the revised code, using code tags.

Here it is: //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= byte segmentClock = 6; byte segmentLatch = 5; byte segmentData = 7; //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= char snumber[12]; void setup() { Serial.begin(9600); Serial.println("Large Digit Driver Example"); pinMode(…

Check whether the Arduino version of sprintf supports long longs. It does not support floats, for example. Seems a bit silly to declare "remainder" as long long, since it can never be greater than 9. unsigned long long remainder = number % 10;

[image] petemanzel: sprintf(snumber, "%llu", number); I suspect that this type is not supported in the sprintf version of avr-libc. You can check this here . [edit] Here is a print function that might be useful. [image] Arduino Math using Nano Programming Questions …

Indeed it is not. You could use this ulltoa() function: [image] Convert long long or uint64 to string? Programming Questions that's the real question to answer the technical question, try this typical ulltoa() implementation char *ulltoa(uint64_t value, char *buf, int…

Show 11 digit number on 7-segment displays

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oqibidipo November 18, 2022, 6:42pm 13

Indeed it is not. You could use this ulltoa() function:

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Show 11 digit number on 7-segment displays

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