RF Modules

[DanPBP]

Hi Tony,

One short question, on the eBay webpage it says:

Running voltage: 2.2-5.4V

On the PDF file it says:

PIN1: VCC +2.4 to +4.2

How many volts are you using to power up this RF module?

Because getting 5 volts is easy, less volts it's a little more complicated.

Thanks!

Daniel.

[tonyfelloni]

Hi Danny

I have mine powered from the 5 volt supply through 2 diodes
these drop the voltage by about 0.6v each, works fine like this.

Regards

Tony

[ruijc]

The modules I used were cheap as chips and I have found them quite reliable...I would recommend them all the way

Well,

i've been working with them all week with NO success!

I've tried using DEBUG/DEBUGIN, SEROUT/SERIN and HSEROUT/HSERIN.

I have 99% confidence in my code because it works when both pics are connected to each other.

Using these modules just doesn't work and i'm out of solutions !

[DanPBP]

Did you try Tony's code? Are you using +2.4 to +4.2 volts to power it up?

[ruijc]

Hello danielhr77,

thank you for your support.

Tony's code is just a sample and not the entire code, but Yes...i did tried the the Serin/Serout lines on my code and didnt worked!

I'm using 4,24V on both RX and TX modules to power them up.

Have you got these modules also ?
Were you able to use them correctly ?

[DanPBP]

I bought them but I haven't tried them yet... Next month I'm going to test them with my application...

I don't know if 4.24 volts is fine, maximum is 4.20 according to the manual, just in case to test, add a diode to reduce it a little.

A few questions to rule things out:

1) Are you enabling them? (pin 5 active low)
2) Are you using a 1k resistor between the PIC and RX (pin 3)?

That's all right now, it's 6:30 in the morning and I'm going to bed...

[ruijc]

Hi danielhr77,

Followed your guide lines...

add a diode to reduce it a little.

Done...result is the same

1) Are you enabling them? (pin 5 active low)

Yes...i'm using pin5 low

2) Are you using a 1k resistor between the PIC and RX (pin 3)?

I wasnt...but i just tested this also and the result is the same

Also, i programmed on both modules the channel like:

DEBUG $af, $20

If you remember any other pointer for me to check i will be gratefull

My best regards