From: "Stephen Izett stephen.izett@gmail.com" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: EC3 hardware notes
Date: Wed, 24 Jun 2020 20:37:33 +0800
References: <list-411063@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-411063@logan.com>
Message-Id: <12F8D61D-CB43-46DC-818F-0F00B3EDEB0F@gmail.com>

Hi Finn

Both A & B chips erased, verified blank, reprogrammed (EC3CL8.HEX =
17/06/2020), verified and checked program and config memory.
All looks right.
So after flying tomorrow on the EC2, I=E2=80=99ll see about swapping in =
the EC3 and see if she runs!
I=E2=80=99ll let you know how we go.

Thanks Finn

Steve

> On 24 Jun 2020, at 7:52 pm, Stephen Izett stephen.izett@gmail.com =
<flyrotary@lancaironline.net> wrote:
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> Hi Finn
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> ok. Now I recall you mentioning this recently but misunderstood.
> Sorry I haven=E2=80=99t read all your emails carefully enough having =
done the work with tracy.=20
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> Good news for this EC3, that being the case.
> I=E2=80=99ll see if I have enough time tonight to reprogram the chips =
as I=E2=80=99m headed down tomorrow and could test the new code.
>=20
> I tried to pick up some 2.7v zeners today, but they only had 3.3v in =
single units and 2.7v by the 1000!
>=20
> So the full wave clipping circuit you supplied should clip the CAS =
signal to Zener voltage + forward volt drop of the other zener.
> 2.7+~0.7 =3D 3.4v. If I use the 3.3v it would clip the signal at =
3.3+~0.7=3D4v. My analog amp knowledge is woefully lacking these days
> but I thought this extra 0.6v would be fine for Tracy=E2=80=99s =
conditioning circuits.
> Appreciate any analog insights you can offer re those signal =
conditioning amplifier/buffers?
>=20
> Cheers
>=20
> Steve Izett
>=20
>=20
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>> On 24 Jun 2020, at 6:27 pm, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>>=20
>> Steve,
>>=20
>> It will NOT run programmed for Renesis and LS2 coils unless you =
reprogram the chips using the source code I uploaded on the 17th of =
June:
>>=20
>> "Here it is:
>> =
https://drive.google.com/drive/folders/1mVzPOxUwcGUlPizxnRF40nUyKBzfT4DC?u=
sp=3Dsharing
>> It's EC3closedloop.zip."
>>=20
>> Finn
>>=20
>> On 6/23/2020 6:23 PM, Stephen Izett stephen.izett@gmail.com wrote:
>>> Hi Finn
>>>=20
>>> Sorry, I misunderstood. Too many things on my mind at work at =
present.
>>>=20
>>> When I get to the EC3 mods I=E2=80=99ll:
>>> a. Test the EC3 with new clamped CAS input. If no change and it =
still runs like a dog on two legs  -
>>> b. I=E2=80=99ll reprogram the chips with your hex code and retest.
>>>=20
>>> On another note:
>>> Still trying to decide on whether to pay to have my 4 blue secondary =
injectors cleaned and tested or
>>> buy new injectors, New ones are cheaper on eBay but are they knock =
offs that I shouldn=E2=80=99t trust?
>>> Cleaning is $40 each. New ones are $20 each!
>>>=20
>>> Cheers
>>>=20
>>> Steve Izett
>>>=20
>>>=20
>>>=20
>>>=20
>>>=20
>>>> On 24 Jun 2020, at 12:04 am, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>>>>=20
>>>> Oh, you already reprogrammed them with the fixed code I uploaded?
>>>>=20
>>>> Finn
>>>>=20
>>>> On 6/23/2020 10:44 AM, Stephen Izett stephen.izett@gmail.com wrote:
>>>>> Thanks Finn.
>>>>>=20
>>>>> I=E2=80=99ll add the 2 zeners to the EC3 and test it.
>>>>> I thought the reprogramming of the chips was right.
>>>>> MPLABS reported them to be good.
>>>>>=20
>>>>> Steve
>>>>>=20
>>>>>=20
>>>>>=20
>>>>>=20
>>>>>> On 23 Jun 2020, at 9:56 pm, Finn Lassen finn.lassen@verizon.net =
<flyrotary@lancaironline.net> wrote:
>>>>>>=20
>>>>>> Attached is an excerpt of the EC3 CAS input conditioning circuit =
without added clamping circuit and with.
>>>>>>=20
>>>>>> Finn
>>>>>>=20
>>>>>> On 6/22/2020 10:02 PM, Stephen Izett stephen.izett@gmail.com =
wrote:
>>>>>>> Thanks Finn. Did you previously give us a the circuit? Do you =
have a sketch of it?
>>>>>>> I=E2=80=99ll mod the EC3 and see if that is the problem.
>>>>>>>=20
>>>>>>> Cheers
>>>>>>>=20
>>>>>>> Steve Izett
>>>>>> <EC3 CAS input with clamp.pdf><EC3 CAS input.pdf>--
>>>>>> Homepage:  http://www.flyrotary.com/
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