From: "Finn Lassen finn.lassen@verizon.net" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: EC3 hardware notes
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Date: Wed, 24 Jun 2020 13:38:59 -0400
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Cool. Probably won't beat you to it. Still working on the canopy bow. 
Fiberglass - yuk!

Finn

On 6/24/2020 8:37 AM, Stephen Izett stephen.izett@gmail.com wrote:
> 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’ll see about swapping in the EC3 and see if she runs!
> I’ll 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:
>>
>> Hi Finn
>>
>> ok. Now I recall you mentioning this recently but misunderstood.
>> Sorry I haven’t read all your emails carefully enough having done the work with tracy.
>>
>> Good news for this EC3, that being the case.
>> I’ll see if I have enough time tonight to reprogram the chips as I’m headed down tomorrow and could test the new code.
>>
>> 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!
>>
>> 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 = 3.4v. If I use the 3.3v it would clip the signal at 3.3+~0.7=4v. My analog amp knowledge is woefully lacking these days
>> but I thought this extra 0.6v would be fine for Tracy’s conditioning circuits.
>> Appreciate any analog insights you can offer re those signal conditioning amplifier/buffers?
>>
>> Cheers
>>
>> Steve Izett
>>
>>
>>
>>
>>
>>
>>
>>> On 24 Jun 2020, at 6:27 pm, Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
>>>
>>> Steve,
>>>
>>> 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:
>>>
>>> "Here it is:
>>> https://drive.google.com/drive/folders/1mVzPOxUwcGUlPizxnRF40nUyKBzfT4DC?usp=sharing
>>> It's EC3closedloop.zip."
>>>
>>> Finn
>>>
>>> On 6/23/2020 6:23 PM, Stephen Izett stephen.izett@gmail.com wrote:
>>>> Hi Finn
>>>>
>>>> Sorry, I misunderstood. Too many things on my mind at work at present.
>>>>
>>>> When I get to the EC3 mods I’ll:
>>>> a. Test the EC3 with new clamped CAS input. If no change and it still runs like a dog on two legs  -
>>>> b. I’ll reprogram the chips with your hex code and retest.
>>>>
>>>> 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’t trust?
>>>> Cleaning is $40 each. New ones are $20 each!
>>>>
>>>> Cheers
>>>>
>>>> Steve Izett
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> On 24 Jun 2020, at 12:04 am, Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
>>>>>
>>>>> Oh, you already reprogrammed them with the fixed code I uploaded?
>>>>>
>>>>> Finn
>>>>>
>>>>> On 6/23/2020 10:44 AM, Stephen Izett stephen.izett@gmail.com wrote:
>>>>>> Thanks Finn.
>>>>>>
>>>>>> I’ll 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.
>>>>>>
>>>>>> Steve
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> On 23 Jun 2020, at 9:56 pm, Finn Lassen finn.lassen@verizon.net <flyrotary@lancaironline.net> wrote:
>>>>>>>
>>>>>>> Attached is an excerpt of the EC3 CAS input conditioning circuit without added clamping circuit and with.
>>>>>>>
>>>>>>> Finn
>>>>>>>
>>>>>>> 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’ll mod the EC3 and see if that is the problem.
>>>>>>>>
>>>>>>>> Cheers
>>>>>>>>
>>>>>>>> Steve Izett
>>>>>>> <EC3 CAS input with clamp.pdf><EC3 CAS input.pdf>--
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