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· 08/06/2020 3:33 PM
Allenb, how are you doing?

· 08/05/2020 1:08 PM
Is anyone roasting on a Coffee Tech FZ 94? Using Artisan. Need help. thumbdown

· 08/03/2020 11:26 AM
There is (or was? Grin ) a gesha at sweet marias...

· 07/25/2020 12:31 PM
I ran out of Ethiopian Gesha.

· 07/25/2020 12:31 PM
it is ok. I do not remember. I think it was a callout to the spam shout.

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TC4 connect to Raspberry Pi
Unless I'm just not doing something correct in the setup..
It must or has to be how I'm setting up the port. But only com3 is showing and that does nothing, but in the other tabs I have different com numbers, yep tried them too..
Alive, but not communicating, they aren't exclusive... Grin
So let the PI alone and focus on TC4 serial port, or the cable.

Check on PC the Device Manager, Ports branch, if reacting when connecting/disconnecting TC4.
ok i think ive figured it out ! the Arduino UNO is CRAP.. i started from the beginning of time. tried to load the Artisan_PID sketch onto the UNO and i cant connect with it. tested the main computer and still no connection NO data connection. so back to ordering new items.
OK quick question, i Purchased this UNO but its an R3, will this work with the TC4 ? or did i screw up LOL

GreenCardian - this is the difference BUT need to know if this will be OK with your TC4, Thanks in advance
I think the UNO R3 is the most recent version of the Arduino UNO and is fine for the TC4.

The one you linked to is a compatible board that uses the CH340 chip to do the serial to USB connection. The official boards use an ATmega16U2 chip for the Serial to USB.

So possibly you may have a CH340 driver issue.

I also buy compatible UNO R3 boards, but I always get the ones with the ATmega16U2 chip like the official ones.
It was the board you sent me in the package that's not working
Ok. But you were able to program it successfully, so the serial connection must have been working at one stage?
Oh ya they were was working 100%

the Uno has "ICSP" 6 pins on the bottom ( opp side from the usb ) that point up and when i seated the TC4 on the UNO the solder points have come in contact with the 6 pins and shorted the comms out.

Ordered New UNO
cut the 6 pins from the board

installed and running perfect.

Thank you to all that helped in this issue along the way..

This is referred to as in-circuit serial programming (ICSP). Most Arduino and Arduino compatible boards will have a 2x3 pin ICSP header on them. Some may even have more than one depending on how many ICs live on the PCB
NewBean attached the following images:
port.png gotit1.png

Edited by NewBean on 07/19/2019 3:13 PM
hello all that were following this post, all hooked up today and the TC4 is working perfect! fan and heat controls! mind you we have to redesign the heating system as its more of a warm fart in the wind but the rest is perfect.

with the TC4 i need to figure out what the TC4 SV display is for? anyone??

AGAIN i cant post pictures, so here is a link
Set Value, known also as current setpoint (SP)
It is displayed when you roast following a profile, driven by PID controller.
This value is used by controller to compute an error, as the difference between the desired setpoint (SV), and a measured process variable (BT or sometimes ET), and the output of this computation is used to control the heater in order to minimise the error.
Thankyou that would explain why nothing was showing on it as I was not following anything.. more of a first test run
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