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Homeroasters - Home Roasting Coffee Community » DATALOGGERS - CONTROLLERS - RATE OF RISE METERS » Dataloggers/Controllers/Rate of Rise Meters

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TC4 with RoastLogger
fg1972	#101 Posted on 02/27/2014 5:15 PM
Newbie Posts: 48 Joined: November 02, 2013	Thanks greencardigan, I'll give that a try, as the supply voltage via the PC USB lead is around 4.8VDC. Cheers Fiorello Its Espresso, not Short Black


fg1972	#102 Posted on 03/05/2014 2:25 PM
Newbie Posts: 48 Joined: November 02, 2013	Tried a separate 9VDC power supply to power the TC4 but the locking up still occurs. Strange thing is that it always happens towards the end or at the end of a roast. My current work around is to restart the TC4 and RoastLogger after each roast. Its Espresso, not Short Black


greencardigan	#103 Posted on 03/05/2014 4:21 PM
1 1/2 Pounder Posts: 1179 Joined: November 21, 2010	Maybe check to see if it happens at the same elapsed time each time? Maybe it happens at 60 minutes since powered up?


JimG	#104 Posted on 03/06/2014 3:47 PM
1 1/2 Pounder Posts: 834 Joined: October 23, 2008	Quote fg1972 wrote:Funny thing is that it always seems to occur towards the end of a roast at ~18:00 to 20:00 minutes. What is going on with the output levels on OT1 and IO3 at the 18 to 20 minute mark? In particular, I wonder if the output level going to IO3 (for the fan) is being changed at or near the time of the freeze? I will pass along that I had an identical problem with a different roaster, i.e., Hottop. I tracked it down to my USB cable. Either the cable was too long and was picking up interference from the motor, or it was because I had used an extension. I fixed it by changing to a short single piece USB cable. Jim
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fg1972	#105 Posted on 08/28/2014 6:41 AM
Newbie Posts: 48 Joined: November 02, 2013	Hi all, been away from the forum for a few months but still roasting weekly and resetting the TC4 between roasts and occasionally ruining a roast due to a lockup mid roast. Elapsed time is never the same, usually between 16-20 minutes into the roast. The OT1/IO3 output levels towards the end of a roast are pretty much where they are earlier in the roast. IO3 is usually around the 80% level and OT1 is hovering around 50-75% (nothing unusual) I've just retired the PC I was using to run RLogger and put an old laptop in its place. I did a couple of dry runs without beans and had no issue whilst running on the laptop. I'll see how it goes next week with my back to back roasts. If it still occurs, I'll try a shorter USB lead. Thanks for the help guys. Cheers Its Espresso, not Short Black


JimG	#106 Posted on 08/28/2014 6:49 PM
1 1/2 Pounder Posts: 834 Joined: October 23, 2008	That should support very good temperature control. Jim
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GreenBean	#107 Posted on 06/09/2016 5:21 AM
Newbie Posts: 27 Joined: September 16, 2014	RoastLogger website has moved I have been forced to move the RoastLogger website which is now at the following URL: http://roastlogger.co.uk/coffee/roastlogger/roastlogger.htm Unfortunately this means that the links provided in various posts on this forum will now be dead. I am not able to edit links on this forum. If the moderators can work any magic to correct the links (search and replace?) I would be very grateful. The structure under http://roastlogger.co.uk/coffee/ has not been changed so it is ?only? necessary to change the first part of any links from: http://homepage.ntlworld.com/green_bean/coffee/ ? to: http://roastlogger.co.uk/coffee/ ? I apologise for the inconvenience this causes. Further information about the reason for the move is available on the TMC RoastLogger thread. Izzo Alex Duetto \| Gaggia XD 2 Group \| Mazzer Super Jolly \| La Cimbali Max \| Solis 166 \| Hottop P \| Hottop B \| French Press (several) \| Aeropress (collecting dust) \| Kettle modded (added digital thermometer)

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