Re: What chip was used on the DTMF Weeder Kit?

[nobody@xxxxxxxxxxxx (Dave Houston)]

The Weeder Telephone/Computer Interface kit (WTTCI-K) did use the MC145436
but it also used a PIC16C54 which decoded the DTMF and provided the
multidrop RS232 interface. Aside from the fact that supplying you with the
board layout and schematic would infringe Weeder's copyright it wouldn't do
you any good without having the firmware for the PIC. If you plan to write
your own PIC firmware, you may as well design the whole thing from the
ground up.

Unless you can find a surplus Weeder kit, it would be simpler to choose some
other DTMF decoder kit (there are many) and adapt the MH code as needed.
Check out the QK153 from Quality Kits.

Jack Edin <nospam@xxxxxxxxxxxxxxxxxx> wrote:

>Hi gang!
>
>I too would very much like Mister House to log outgoing calls as well.
>
>I added a NetCallerID and enjoy it logging my incoming calls.
>
>I joined Vonage just to get CallerID service, for this purpose.
>
>Mister House is compatible with a Weeder kit, which is no longer
>available... So...
>
>I called Mr. Weeder today.
>
>"The Outgoing DTMF phone monitor kit was discontinued, as were all kits,
>around 5 or 6 years ago."
>
>I asked if he was going to produce a finished product instead? "No."
>
>He's focused on Industrial products, and has strayed away from Home
>Automation. "There is no market for kits."
>
>So I asked him for the schematics and board layout. "I don't have that
>stuff anymore", he said.
>
>Do I believe him? As an engineer-type myself I can assure you - I never
>throw anything away. Maybe HE did, how knows?
>
>"Besides..." he added, "The chip I used was made by Motorola. It was
>discontinued 6 years ago. So it wouldn't do you any good to have the
>schematic anyway!"
>
>Well I have found a few chips that do the job, including an old Motorola
>part. And a current source for that part being under $5.00
>
>So now the board layout and schematic would be very helpful indeed.
>
>Do any of you HA buffs have this Weeder kit in use? Could you look at
>the chip for me?
>
>I think it is the Motorola MC145436.
>
>Whatever I make, I'll want it to act identically to the Weeder design
>soas to maintain Mister House compatibility.
>
>Does the Weeder kit connect the the Parallel port? No CPU would be
>necessary to serialize the data...
>
>Anybody have a spare Weeder kit they would part with?
>
>Thanks for any help Terry Weeder and the HA community can offer.
>
>Sincerely,
>
>Jack Edin
>Logic Unlimited
>Aloha, Oregon