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JackH
12/14/2019 4:07 AM
I read somewhere that higher elevations have faster roast time and require somewhat lower temperatures. air is thin and has less Oxygen

allenb
12/14/2019 12:44 AM
Yes, 1st off, you must use only Panama Esmeralda Geisha beans and be sure to only roast on Saturdays. Actually, this isn't completely true. Please post in all about roasters forum. Thx!

wjohndon4566
12/13/2019 10:36 AM
I’m at 9,000 feet elevation, is there any special adjustments that need to be made to roast using an SR 540 at this elevation?

snwcmpr
12/07/2019 9:29 AM
roar

snwcmpr
11/27/2019 11:44 AM
greenman

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ESP8266/TC4 Wireless link to Artisan via Wifi
Gullygossner
I have an ESP8266, an SSR and a MAX31855 kicking around and happened to trip across past discussions (https://forum.homeroasters.org/forum/viewthread.php?thread_id=5471) on setting this up for datalogging/control via Artisan.

With Chaff's assistance I have been able to get this up and running for my Poppery 1 roaster.

I was wondering if anyone has insight as to how to link the ESP8266 in Artisan via wifi? I found this video (https://www.youtube.com/watch?v=VuyKWOK1Of8) showing it is possible, I am just looking for some instructions as to how to set it up.
 
renatoa
TC4ESP is MODBUS TCP capable as I write, but code not polished enough to publish... 1-2 weeks maybe one month.
I can share you the relevant parts, if you have programming skills to adapt to your actual application.
Are you actually running Chaff popc ?
 
Gullygossner
Yes i am running the Popc code. I was hoping to implement your TC4ESP setup but getting the parts is proving difficult. I ordered it all back in May but have yet to receive anything, even after they allegedly resent.
 
mg512
I'm not too familiar with the popc sketch. Does this implement the TC4 protocol, or how do you currently control the roaster via USB?

In any case, a quick and dirty way could be to keep whatever control protocol you have on the USB serial, and expose it on a TCP port instead. Then use a second ESP8266 as a cheap USB-to-telnet bridge on the host computer. That way everything looks the same to Artisan, and only relatively minor changes are required in the Arduino sketch.
 
https://www.tindie.com/products/15798/
renatoa
Yes, popc "speaks" TC4, not complete, but most commands, especially those related to PID, and reply accurate to READ requests.

MODBUS TCP is even simpler, and the most important, implemented by Artisan for longtime, for Fuji controllers, thus no bridge required, as for MQTT.
 
Gullygossner
It may be easier to just to implement a HC-06 BT module and use bluetooth for wireless connection. I thought TCP wifi connection may be a simple configuration step but it appears to be much more in depth.
 
renatoa
Agree, but beware that BT and USB share same serial connection, so switching them require some wiring and a switch.
 
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