Gaussmeter Kit Group-Buy

[mickmutante]

Yes mickmutante, I'm set up to be able to take credit card payments through my Paypal account, can you pay with your credit card through Paypal?

Let me know and I'll put you on the list if you are "in".

I just created my Paypal account.. I'm waiting for a code... I think after that I can do the transaction without problem....
So I think I'm in the group..!

Thanks.!

[defaced]

If there are no objections, we will delay the Last Call until I recieve the PIC and I can validate the build for us, are we all on board for this new step?

Sounds good to me.

[RedHouse]

Emmm, maybe we must ask Elepro if there's another break in price.
Who knows, maybe the group buy will exceed 20 participants!

What say you Elepro, would you offer an additional price break at 20+ units?

[mkat]

If there are no objections, we will delay the Last Call until I recieve the PIC and I can validate the build for us, are we all on board for this new step?

Yes, definitely.

[mickmutante]

If there are no objections, we will delay the Last Call until I recieve the PIC and I can validate the build for us, are we all on board for this new step?

No problem...

[-Elepro-]

What say you Elepro, would you offer an additional price break at 20+ units?

19€ 20+ ---- 18€ 25+

first pic shipped....

[RedHouse]

19€ 20+ ---- 18€ 25+

first pic shipped....

Thanks for shipping the first one quickly Elepro, I'm sure we're all eager to get this train-a-rolling again.

Also thanks for offering additional discounts for this group-buy, we'll see if we can get more participants on-board!.

[automan]

You can usually tell when people are above board by how fast they ship. Let me ask around town. I know a few electronuts that might have a use for this buy. I'll ask around tomorrow and report back.

We may put elepro in business before this is all said and done

[RedHouse]

Just got the Mouser parts in for the one test meter, the DIP socket part number I ordered 517-4828-6004-CP won't do. It's the "wide" DIP which is .600 wide.
(the PIC16F883 that Elepro specifies is a .300 wide chip)

So after downloading the data sheets for those dual wipe sockets, it appears that the 3M dual wipe sockets don't come in 28-pin length for the .300 width skinny DIP.

But, the 3M dual wipe sockets are "end stackable" which means we can just order 2 of the 14-pin parts and place them end-to-end, they are designed to allow this.

Sure we could use machined-pin sockets, but some of our participants might have trouble inserting the chip as they tend to be a bit tighter and often need a insertion tool.

Another thing is the 'kinked" leads on these guys, I'm thinking they might give some of our particpants a difficult time inserting into the PCB, they are available in straight leg option so I'm of the opinion we should specify those in our parts list.
(the kinked leads are meant for machine insertion so the part stays in place after the machine lets-go)

I would propose to the group that we change our chip-socket part number on our main parts list to two (2) M# 517-4814-3000-CP @ $0.19/ea

Also note that the M# 517-974-01-16 (the socket the header plugs into to connect the LCD board to the daughter board) when looking it up on the Mouser webpage where you do parts searches it said "in stock" ...but... when I got to the order confirmation webpage it said they were on back-order and 2-weeks out, so for this one test meter I just ordered 2 of the 8-pin sockets M# 517-974-01-08 and will install them end-to-end, it will do the same job.

Otherwise everything else looks like it will work and fit.

I guess it's time to go cook up a PCB for this test unit!

[spy]

So far, so good!

[LtKojak]

Just got the Mouser parts in for the one test meter, the DIP socket part number I ordered 517-4828-6004-CP won't do. It's the "wide" DIP which is .600 wide.
(the PIC16F883 that Elepro specifies is a .300 wide chip)

So after downloading the data sheets for those dual wipe sockets, it appears that the 3M dual wipe sockets don't come in 28-pin length for the .300 width skinny DIP.

But, the 3M dual wipe sockets are "end stackable" which means we can just order 2 of the 14-pin parts and place them end-to-end, they are designed to allow this.

Sure we could use machined-pin sockets, but some of our participants might have trouble inserting the chip as they tend to be a bit tighter and often need a insertion tool.

Another thing is the 'kinked" leads on these guys, I'm thinking they might give some of our particpants a difficult time inserting into the PCB, they are available in straight leg option so I'm of the opinion we should specify those in our parts list.
(the kinked leads are meant for machine insertion so the part stays in place after the machine lets-go)

I would propose to the group that we change our chip-socket part number on our main parts list to two (2) M# 517-4814-3000-CP @ $0.19/ea

Also note that the M# 517-974-01-16 (the socket the header plugs into to connect the LCD board to the daughter board) when looking it up on the Mouser webpage where you do parts searches it said "in stock" ...but... when I got to the order confirmation webpage it said they were on back-order and 2-weeks out, so for this one test meter I just ordered 2 of the 8-pin sockets M# 517-974-01-08 and will install them end-to-end, it will do the same job.

Otherwise everything else looks like it will work and fit.

I guess it's time to go cook up a PCB for this test unit!

Yeah, by all means, please do! Jeez, this wait is just killing me and I'm not even a p'up maker by trade!

[Bruce Johnson]

This is exactly why one smart guy needs to build up a prototype before making up the kits. In my experience with building up electronics projects, most of the little hangups are mechanical problems; getting the right parts so it all fits together.

Take your time, sort out the problems, and make it right. No big hurry from me.

[StarryNight]

the effort put in to getting this sorted and working right is very much appreciated. thank you!

[RedHouse]

...This is exactly why one smart guy needs to build up a prototype before making up the kits....

Well, until we find him, I'll have to do...

[David Schwab]

Well, until we find him, I'll have to do...

And we thank you for volunteering!