HH506RA Software

I now have the Omega HH506RA talking to the computer via the USB cable running the Omega software. The software works and you can log the results but it is clumsy to do what I want which is record the temperature and plot both probes every 30 seconds.

So far I can communicate to the logger, read values and translate the return values.

Some of the valuable resources for people working on this include:

I will start posting the program as I get it into some shape.

Connecting to the Computer

Now that the probes were installed, I started to seriously look at the datalogger and connecting it to my computer.

HotTop roaster, Omega HH506RA data logger, installed probes and XP computer

The equipment I use is:

1 – HH506RA – Omega 2 channel datalogger (Website Canada) (Website US)
1 – HH506RA-USB-SW – Omega USB optical interface cable
2 – KTSS-HH – Omega 6″ K-type probes (Website US)

First the HH506RA has to be set up. Plug in the two K-type probes. Continue reading “Connecting to the Computer”

Omega Datalogger and the HotTop

Complete Unit with both probes

In the previous post I had attached the Omega HH506RA to one KTSS-HH probe and mounted that probe in the HotTop. Now I attached the second probe for the drum temperature.

All of this started with a web page by Randy Glass.
http://home.surewest.net/frcn/Coffee/HowToHottopTemp.html (page gone now)

Here is the guide that was mode on how to modify the top to install probes. I did not write it. Mods to cover for probes

After attending roasting school I wanted both a bean and drum probe. The probe built into the HotTop is above the bean mass. Continue reading “Omega Datalogger and the HotTop”

Hoptop KN-8828B Roaster

Hottop Ejecting Coffee. Notice and smoke rising from the coffee.
I bought a new coffee roaster on the weekend. This is a prosumer level home roaster. It can roast 450 gram (1/2 pound) per roast and is a computer controlled drum roaster.

While it is simple to do the first roast, there is a real learning curve to this unit. You can vary fan speed and temperature by time. The basic automatic program just slams on the heater and turns the fan on full as it enters first crack.

I found an excellent Australian website on the Hottop with a 23 minute tutorial on more advanced roasting profile techniques. http://www.thingscoffee.com.au/kb.php

I have made a few roasts using their technique and looking forward to tasting them this afternoon.

One challenge is smoke. While my smaller roaster was fine under the range hood, this unit just puts out too much smoke for that. I placed it beside an open window with a fan between the exhaust and the window. Perfect. I turn on the fan at the same time as the internal fan turns on. Even as the roasted coffee was ejected in this picture, all of the smoke was pushed out of the window. A cheap and simple solution. In the summer I can see just roasting outside but as we are coming up on winter, I needed a kitchen solution.

I modified my roasting log and am going to modify the plotting program to follow not only the temperature but the heater and fan settings on the same graph. This should be interesting.