BruControl: Brewery control & automation software

[Tartan1]

By chance did you miss wiring the TF-4 board to the AREF pin, also are you powering any other 5VDC devices from the MEGA board 5VDC pin? If the board's 5V pin has a heavy draw it could cause the temp readings to fluctuate.

 

[oakbarn]

By chance did you miss wiring the TF-4 board to the AREF pin, also are you powering any other 5VDC devices from the MEGA board 5VDC pin? If the board's 5V pin has a heavy draw it could cause the temp readings to fluctuate.

I went back an rechecked (and re documented) my wiring as I am not that neat with it. I made sure that the TF4 is powered with the 5+ volts of the Mega (tied to AREF) and that the ground is tied to a Mega GND. They are all steady now. I am not using the 5 vdc of the Mega for anything else but I might use it for One Wire as well. I will try it and if it causes an issue, I will use my Grand Central Valve Control Interface.

The Only reason I would run off the Mega is a "backup" for a 10K NTC Probe for a Mega PID.

 

[CDCTx]

Anyone using a pressure sensor/transducer in their kettles to measure volume? If so, what sensor/transducer are you using?

I use a transducer for my fermenter to measure head pressure, so the 30psi ones are fine for that, but I see that 30psi is far overkill for my Brewzilla Gen4 65L. I'm considering adding something to the bottom port (add a T for sensor and valve) to track my RO water fill and post-boil volumes (accounting for wort density, of course).

 

[Brewsader1]

Anyone using a pressure sensor/transducer in their kettles to measure volume? If so, what sensor/transducer are you using?

I use a transducer for my fermenter to measure head pressure, so the 30psi ones are fine for that, but I see that 30psi is far overkill for my Brewzilla Gen4 65L. I'm considering adding something to the bottom port (add a T for sensor and valve) to track my RO water fill and post-boil volumes (accounting for wort density, of course).

Yes, I have these or same from different store on alie: https://www.aliexpress.us/item/3256...|x_object_id:1005008585128318|_p_origin_prod:

You can order different pressure sensitivities and can do a 4-20 mA output or usually they can do a 0-5v output as well.

 

[CDCTx]

Yes, I have these or same from different store on alie: https://www.aliexpress.us/item/3256808398813566.html?spm=a2g0o.productlist.main.19.28d78x7E8x7EEK&algo_pvid=1724e246-c377-4395-87ff-4d100e086ab9&algo_exp_id=1724e246-c377-4395-87ff-4d100e086ab9-18&pdp_ext_f={"order":"2","eval":"1"}&pdp_npi=6@dis!USD!39.05!31.24!!!39.05!31.24!@2140f53817570010642504434e2c6d!12000045837463138!sea!US!0!ABX!1!0!n_tag:-29910;d:46d43c97;m03_new_user:-29895&curPageLogUid=E0ofEV4s8OBj&utparam-url=scene:search|query_from:|x_object_id:1005008585128318|_p_origin_prod:

You can order different pressure sensitivities and can do a 4-20 mA output or usually they can do a 0-5v output as well.

Thanks for this. Looks like the holy grail is a 5v, 100mbar/0m1bar sanitary version, but at least I have some good direction now. I could try 4-20 mA with an ADC too... just more wiring then I'm looking forward to, hah

 

[Brewsader1]

Thanks for this. Looks like the holy grail is a 5v, 100mbar/0m1bar sanitary version, but at least I have some good direction now. I could try 4-20 mA with an ADC too... just more wiring then I'm looking forward to, hah

I like the 4-20 mA from the aspect that it resists noise better, but either way would work. And all you need is a 250 ohm resistor for 5v logic, or a 165 ohm resistor for 3.3v to turn the mA to voltage.

 

[CDCTx]

I like the 4-20 mA from the aspect that it resists noise better, but either way would work. And all you need is a 250 ohm resistor for 5v logic, or a 165 ohm resistor for 3.3v to turn the mA to voltage.

I think I found the one. Thank you!

 

[oakbarn]

Trying to set up some one wires probes.

I created the first one and it read good ( around 75 F). I added a second one and they both now read -196. I have wired it with the data wire to Pin /Port 6 , a 4.7K resistor between the 5 v (from the Mega) and the ground attacted to the Mega as well. Firmware 46. I don't have anything else connected to the Mega.

Any idea?

 

[Brewsader1]

Trying to set up some one wires probes.

I created the first one and it read good ( around 75 F). I added a second one and they both now read -196. I have wired it with the data wire to Pin /Port 6 , a 4.7K resistor between the 5 v (from the Mega) and the ground attacted to the Mega as well. Firmware 46. I don't have anything else connected to the Mega.

Any idea?

Just had this issue myself. You may need to drop the resistor value. I'm running all 10 and have a 1.2k ohm resistor. I don't think you want to go below 1k. Also, I need to shorten all my cable lengths, and that should help too. Lastly, don't be like me and fail to label each sensor index haha