I originally looked at using one of the uChip RF solutions but the cost=20 and complexity were negative factors. The rfPIC12F675F costs in excess=20 of $2.00 in quantity 100+ and requires that I do the heavy lifting of=20 message validation & detection. The nRF24L01+ based modules utilize an=20 SPI interface and take care of the transmission and reception decoding=20 and are readily available for ~$1.00. The uChip module produces a more=20 powerful signal and thus should have a longer range though. -Phil- -------------------------------- Long ago when men cursed and beat the ground with sticks, it was called witchcraft.. Today, it's called golf. On 12/16/2013 2:18 PM, Jean-Paul Louis wrote: > Phil, > > Instead of using low range 2.4GHz, > why not using a rfPIC12F675(F,G,H) for the various ISM frequencies (315, = 433, 866 or 915) for your sensors, and one receiver + small PIC (I forgot t= he part number) for your slave with display. > Microchip sells kits to do just that and they are inexpensive. > > Just my $0.02, > Jean-Paul > AC9GH > > > On Dec 16, 2013, at 4:21 PM, Phil Keller wrote: > >> Allen, >> >> Yes I am using a PIC18F26K22 device and the XC8 compiler from uChip. >> When you are ready, let me know and I will forward you what I have. The >> important disclaimer is that they were developed for my and my clients >> use and as such they are continually being improved to remove >> "unintentional features". As a starting point for your work, no problem >> I'm glad to help. As a debugged Library, NOPE, no way, no how, you >> assume any and all risk in using them. >> >> -Phil- >> >> -------------------------------- >> Long ago when men cursed and beat the >> ground with sticks, it was called witchcraft.. >> >> Today, it's called golf. >> >> On 12/15/2013 12:40 PM, Allen Mulvey wrote: >>> Phil, >>> >>> Are you doing this with a PIC? If so, I would be interested in more det= ails. >>> I picked up a few of those radios and hoped to use them with a PIC. >>> Initially I couldn't find any libraries and didn't have time to develop= my >>> own. I'm hoping to get back to it after the holidays. >>> >>> Thanks, >>> Allen >>> >>>> -----Original Message----- >>>> From:piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Beha= lf >>> Of >>>> Phil Keller >>>> Sent: Sunday, December 15, 2013 1:10 PM >>>> To:piclist@mit.edu >>>> Subject: Re: [EE] nRF24L01+ configuration >>>> >>>> Bingo! That was it. I was using the default Auto Retransmission Dela= y >>>> of 250uSec. Setting it to 500uSec eliminated the "lost" packet >>>> problem. I'll let it run for a couple of days to ensure that it is >>>> solid but worst case I step up to 750uSec. >>>> >>>> Thank you very much for the suggestion. >>>> >>>> -Phil- >>>> >>>> On 12/15/2013 9:34 AM, Veronica Merryfield wrote: >>>>> On Dec 15, 2013, at 9:00 AM, Phil Keller wrote: >>>>> >>>>>> I am running into a problem with my setup of a nRF24L01+ module. >>>>> Have you asked on the Nordic devzone forum - devzone.nordicsemi.com? >>>>> >>>>> If you are using shockburst, you may be running into time out issues, >>> possibly. >>>> -- >>>> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >>>> View/change your membership options at >>>> http://mailman.mit.edu/mailman/listinfo/piclist >> --=20 >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .