[OpenTRV-dev] OpenTRV-dev Digest, Vol 36, Issue 1

[Jeroen Peelaerts]

Hi there,

Just a couple of quick questions. IN which thermostats does the pcb I got
by post fit best? Also what is the recommended way to assemble the board?
Solder by hand, using heat gun (and solder paste) or in a reflow oven?
There's quite a couple of smaller SMD parts that are probably too tiny to
do by hand, or maybe it's just my lack of experience :)



2016-02-16 13:00 GMT+01:00 <opentrv-dev-request at lists.opentrv.org.uk>:

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> Today's Topics:
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>    1. OT: offsetting a thermistor in conrad wall thermostat
>       (Bo Herrmannsen)
>    2. Re: OT: offsetting a thermistor in conrad wall    thermostat
>       (Bo Herrmannsen)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 15 Feb 2016 17:40:33 +0100
> From: Bo Herrmannsen <bo.herrmannsen at gmail.com>
> To: Closed list for developer discussions
>         <opentrv-dev at lists.opentrv.org.uk>
> Subject: [OpenTRV-dev] OT: offsetting a thermistor in conrad wall
>         thermostat
> Message-ID:
>         <CAFqpYu5SwebNfQkpkdCx3xC1a=GxNZAc5bpo-j9DE=fGLG6=
> qg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi all
>
> Got hold of a conrad wall thermostat (from damon) that uses a 10k
> thermistor as temp sensor
>
> I want to experiment with it and see how well it can control my district
> hot water,
>
> only downside are that conrad only allows me to set temp to 30 degrees as a
> max
>
>
> how would i offset the thermistor so it will meassure say 20-30 degree's to
> little (so i can reach 50-60 degrees)? I have no schematic of the unit so i
> want to do as little changes as possible
>
> rgds bo
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> Message: 2
> Date: Mon, 15 Feb 2016 17:52:50 +0100
> From: Bo Herrmannsen <bo.herrmannsen at gmail.com>
> To: Closed list for developer discussions
>         <opentrv-dev at lists.opentrv.org.uk>
> Subject: Re: [OpenTRV-dev] OT: offsetting a thermistor in conrad wall
>         thermostat
> Message-ID:
>         <CAFqpYu7oc=
> 6-Oiw6AHuznN5dp+vSk3WucBZcx_ZvNfPvtW-v7w at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> put a 31-32 kohm resistor in series maybe?
>
> 2016-02-15 17:40 GMT+01:00 Bo Herrmannsen <bo.herrmannsen at gmail.com>:
>
> > Hi all
> >
> > Got hold of a conrad wall thermostat (from damon) that uses a 10k
> > thermistor as temp sensor
> >
> > I want to experiment with it and see how well it can control my district
> > hot water,
> >
> > only downside are that conrad only allows me to set temp to 30 degrees as
> > a max
> >
> >
> > how would i offset the thermistor so it will meassure say 20-30 degree's
> > to little (so i can reach 50-60 degrees)? I have no schematic of the unit
> > so i want to do as little changes as possible
> >
> > rgds bo
> >
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