Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Howard" <hj.payne@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Monday, June 09, 2008 1:19 PM
Subject: [Homebrew_PCBs] Re: HELP: UV Light box


> --- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" <leon355@...>
> wrote:
>>
>> I'm in the process of making the display PCB for my prototype. It
> uses
>> two 7-segment LED displays and will plug into the little PCB supplied
>> with the PICkit 2, and use the supplied 16F690. When the software is
>> working, I'll design a PCB for the whole system, with a reed relay
> etc.
>>
>> Leon
>>
> Hi Leon
> Would this design be able to use single side board, as iam not up to
> speed on making double side one's ??
>
> As your uesing two 7-segment LED displays, is the time displyed as
> mins or secs, and what is the max time ?. Instead of useing a reed
> relay, can it use a dpdt one ?.

Yes, it will be single-sided. Time will be in unit minutes and tens, up to
99 minutes. I need 11 minutes.

I haven't decided on the relay, but I'll accomodate a DPDT one.

I've assembled most of the display PCB for the PICkit 2, but I've used a
couple of transistors which I didn't have in stock and which have unusual
pinouts, I should have them tomorrow. I can then get on with the software.

Leon