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Hi, I've used the MAX6675 in the past with two connected to an spi bus, this has now been replaced with the MAX31855. Should have no problems getting the accuracy you require.

Hi Andy

How many Led's are you running in each row? It may be a better light output / power usage comperimise to use a switch mode driver.
160ma @ 24V is 3.84W, but as an example 5 rows of 6...

I'm guessing your still using the 18F24K22 ?

Check your OSCCON settings are

OSCCON = %01110010 ' Set internal 16Mhz OSC
OSCCON2 = %00001100

while OSCCON.2 = 0 : WEND ' Wait for...

Cheers Robert, It was going to be something simple.

Don't know what happend to the code i posted earlier in the thread, it seems to have been reformatted missing bits so would never work.

Here it is as an attachment

6363

ok i'm sure youve checked this but have you checked the ports Analog input is turned off.


ANSELA = 0
ANSELB = 0
ANSELC = 0 ' Config A2d All OFF

Hi,

Sorry I've been meaning to post the code I had for this, but have problems with the computer that has the file on.

The CCP3 output is set in the configuration bits, I'll have a look at the...

It's a bit overkill but a PIC18F24K22 does RGB led's with no hassle, using 3 of the CCP modules.
And in the UK its only £1.98, 4pence more than a 16F628. I have an example that i can post if you...

As a very different suggestion have you looked at the Si4010 by siliconlabs ?

Just starting on a project using this, SiLabs do supply Gerber files for a keyfob, not sure what the usage limits are...

I've not had a chance to do much more on this but my though's were

All slaves have fixed unique addresses, they also have a broadcast address to listen in to

The master broadcasts a start new...

Hi

I used the 16F1936 a while back, from memory there were a few more things to set up, OSCCON register for example.
For some reason the code is not on this PC, I'll have a look when i get to...

Hi All

After some ideas here, I have a master unit that colects data from several slaves on a bus.

At the moment I have the master hard coded with a list of the slaves addresses, all working...

Chris
A thought accured to me RE timer 3. did you check the configuration bits in CONFIG3H?

bit 4 T3CMX: Timer3 Clock Input MUX bit
1 = T3CKI is on RC0
0 = T3CKI is on RB5


MOUNTAIN747

Hi Chris

I had this problem on a 24k22, turned out to be the TxRD16 bit of TxCON being set for 16bit mode. Changing this to 8 bit mode solved it for me.

Agreed, not picbasic, what version of picbasic are you running?

Is there any way you can add in a DEBUG after the "hserin 15,PasoSerie,[b0,b1,b2,b3]"?
Just to output the raw recieved bytes to monitor in a terminal.

The other thing that you could do is to...

Hard to say, could you post the entire tx/rx routine and details of hardware.
I presume your using a max485 or similer as the RS485 hardware interface to the PIC, the first thing that if this is...

Hi

This can easly be done in PBP using the I2CREAD and I2CWRITE commands.
The I2C routines in PBP are software based and can be assigned to almost any pin on the PIC, in your case you could use...

Give it a go with PGM pulled down. I only found this after intermittent programming problems on a project some time ago, now allways keep this pin in a way it can be pulled down (even if it means an...

I have had strange programming issues with the 16F88x series and Pickit2 a while back.
Turned out to be the PGM pin (RB3) on the PIC needs to be pulled down to GND with ~10K - page 228 of the...

Thanks that Charles, In my sleep deprived state i'd forgoten that not all PICs run stable at lower voltages.
In my case, the 16F688 does run fine @4Mhz 3.3V.

Ok, not sure what happend to my reply so here it is again.

I've got Boards with Xbee's and PIC's running both of 3.3V, Not found any problems with the PIC running off 3.3v, is there a reason why...

Have you considered the MCP9700 temp sensor from Microchip.
About to use one on a project myself, Cheap £0.22 @10off in farnell and hopefuly a lot less coding than a Thermistor.

Don't forget in automotive when the engine is running you'll have 13.8V not 12V (This is to charge the battery). Used a DCDC convertor for a car based project a while back, will try to dig out the...

Hi All

Using the PCPWM module to drive led arrays at the moment. All working fine but does anyone know if it posiable to put each output out of phase with each other so say that with all 3...