Products > Test Equipment
Brymen IR connection protocol - Anyone sniffed it yet?
<< < (8/31) > >>
microbug:
Has anyone else noticed this?
jadew:
@microbug,

Yes, but it's the protocol for the cable, not the meter. It's also what confused me, because I was living under the impression that there's a more complicated handshake.
rastro:

--- Quote from: jadew on October 02, 2013, 11:52:50 pm ---
The cheapest MCU with USB that I know of is the PIC18F14K50.

--- End quote ---

Great detective work.  I'm looking to purchase a Brymen.  I'd rather build my own cable and also make it OSX compatible.
   
You may also consider the New Pro Micro ATmega32U4 5V 16MHz.  Selling on eBay for around $8.00US delivered.
http://www.ebay.com/itm/New-Pro-Micro-ATmega32U4-5V-16MHz-Replace-ATmega328-Arduino-Pro-Mini-/181177986498?pt=LH_DefaultDomain_0&hash=item2a2f0cadc2
Simon Loell:
Not because I wan't to make this a religions war on PIC vs. AVR, but I too would prefer an AVR. Mostly because of my experience.
And the Pro Micro Arduino board you link to Rastro, looks very promising. It only needs a power stage (SOT23 N-FET) for driving the TX IR LED.

I won't be making a lot of measurements before monday, but this project has triggered somthing in me.

jadew:
Yeah, I'd prefer an AVR as well. I guess we'll see, I'll do some tests tonight, after work, with V-USB and if the USB stuff takes less than 1ms to complete, it shouldn't interfere with our clock too much and we could do this with a tiny25, tiny2313.

As for the TX transistor, looks like it could do with out, but I guess it's better to have it in. It needs about 30mA (in my case), which is doable from one pin on the tiny2313.
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod