RIM System
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Posts: 46,084
RIM system…
I am new to the stamp world and in spite of this, things are coming along
okay. I’ve done several brews using the RIM system manually and am now
attempting to automate the process using the stamp. For temperature sensors,
I plan to use the LM34DZ - it outputs 10 mv per degree F, it’s cheap,
readily available, decently accurate and since it is small in size, it can
be placed in the grain bed inside a thermo-well. At first, I was going to
adapt an old Apple IIe to do the computing for this project but the stamp is
ready made and has an easily learned language.
For the AC control, I was planning to use an optically coupled switch, (an
MOC something-or-other), tickling the gate of a triac - easy for the stamp
to control.
Have you put any thought into having the stamp test and then display the
gravity of the liquid in the mash? This is something I will probably toy
with once I get the RIM system going. Testing for gravity would involve a
solenoid valve or two, some temperature detection for compensation and some
type of load cell for weighing the liquid and a liquid level detector – it
would be an interesting project.
Good luck with your RIM system and the results thereof.
Bob
I am new to the stamp world and in spite of this, things are coming along
okay. I’ve done several brews using the RIM system manually and am now
attempting to automate the process using the stamp. For temperature sensors,
I plan to use the LM34DZ - it outputs 10 mv per degree F, it’s cheap,
readily available, decently accurate and since it is small in size, it can
be placed in the grain bed inside a thermo-well. At first, I was going to
adapt an old Apple IIe to do the computing for this project but the stamp is
ready made and has an easily learned language.
For the AC control, I was planning to use an optically coupled switch, (an
MOC something-or-other), tickling the gate of a triac - easy for the stamp
to control.
Have you put any thought into having the stamp test and then display the
gravity of the liquid in the mash? This is something I will probably toy
with once I get the RIM system going. Testing for gravity would involve a
solenoid valve or two, some temperature detection for compensation and some
type of load cell for weighing the liquid and a liquid level detector – it
would be an interesting project.
Good luck with your RIM system and the results thereof.
Bob
Comments
I built a RIMS some years ago before I played with Basic Stamps, so it uses
a PID controller. On the long to-do list is to make another controller based
on a Stamp. The PID controller never worked too well.
I wouldn't worry too much about CD Pritchard's design being from '97, it
will work fine. He is a solid builder of brewing equipment. I don't remember
if his system used an electric heating element or what, but I would avoid an
electric element.
I'd be happy to "talk RIMS" off list.
Jonathan
www.madlabs.info
Original Message
From: "okay_2" <okay_2@c...>
To: <basicstamps@yahoogroups.com>
Sent: Sunday, March 07, 2004 5:11 PM
Subject: [noparse][[/noparse]basicstamps] re: RIM System
> RIM system.
> I am new to the stamp world and in spite of this, things are coming along
> okay. I've done several brews using the RIM system manually and am now
> attempting to automate the process using the stamp. For temperature
sensors,
> I plan to use the LM34DZ - it outputs 10 mv per degree F, it's cheap,
> readily available, decently accurate and since it is small in size, it can
> be placed in the grain bed inside a thermo-well. At first, I was going to
> adapt an old Apple IIe to do the computing for this project but the stamp
is
> ready made and has an easily learned language.
> For the AC control, I was planning to use an optically coupled switch, (an
> MOC something-or-other), tickling the gate of a triac - easy for the stamp
> to control.
> Have you put any thought into having the stamp test and then display the
> gravity of the liquid in the mash? This is something I will probably toy
> with once I get the RIM system going. Testing for gravity would involve a
> solenoid valve or two, some temperature detection for compensation and
some
> type of load cell for weighing the liquid and a liquid level detector - it
> would be an interesting project.
> Good luck with your RIM system and the results thereof.
> Bob
>
>
>
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