Matrix user forums

Hello, Tried lowering the Refresh Freq. to a point of flicker and still the same . I Feel its what LeighM says, The green displays have a higher forward voltage, I guess they are maxed out. :( :( In the display routines , each display is turned on at a time (refresh freq) with the value to be shown....

Hi , In my flowcode projects a regular RED 3-digit 7-segment display with current resistors works at the correct brightness. With displays of other colours it is dim , and even by changing the current resistors I am unable to increase brightness, or the on time. I am using PIC16F628's, with internal...

Thanks Benj,
looking into the type of sensor .

Hello Progers,
Any clues how i could use a biometric reader ? What input would i use ?
A search did not bring up anything.
I know i am being vague, something to throw around.

Regards,

Hello,
Here is a simple FC, with which i am trying to at least get the displays to light up. But am severely stuck. The circuit is as shown in the previous posts.
Please tell me what i am doing wrong or what i need to add to the FC.
Thanks.

Thanks Enamul,
I think its from the french forum. My mistake, need to correct that init macro.
http://www.matrixmultimedia.com/mmforum ... &hilit=I2C

Regards.

I found the attached code and hacked it to match my PIC and Slave as in the schematic above, but still is missing something . Any help is appreciated.
Thanks.

Thank You! For the fix.

Hi,
When i compile a simple program , i am getting the following error: i am compiling to a PIC16F677.
Using V5.5.2.1 (30.01.2013)

Thanks Enamul,
I shall fire up my circuit and test the code out. i found a couple of similar code , but eventually will have to learn how to put it in Flowcode as my "C" is not the best.
I shall keep you posted.

Regards,
PIC-ER.

Hi Enamul, Thanks. This is what i want to do, only difference i will have three 7-segment displays instead of one as in the picture. The test chip i am using right now is a PCA9532 (address-11000000) that is wired to a PIC16F677 at pins RB4 and RB6.(SDA, SCK). Not really sure about the mode. In flow...

Hi ,
Thanks for replying, but I am looking for I2C info for 7 segment displays. As my previous post says.
I am clear on the regular connection of displays to a controller.

Hello, I have read nearly all on I2c examples and am still stumped. I am using a PIC16F677 and want to connect it via I2c to a SAA1064 to a 4 digit 7 segment display. On the hardware side I am OK, but just can't wrap my head around how to start a flowcode program for it. If anyone can help with a ba...

Hi Benj,
Thanks for the reply . Had already tried that, even put in a dwell between each one.
All credit to Medelec he caught it. I had a MOD in the interrupt macro.

Thanks to all,
Regards,
PIC-ER

Hello Guys, I have built a circuit in which an output is switched on at the press of a button. The on/off rate of this out put is settable. At the same time i have a counter display the count every time the output comes on. I use a TMR0 for this. At lower output rates the count is accurate, at highe...