Ash

Hi Tom...added.

ltc

Update:
PCB's have been received from Advanced Circuits.
(unfortunately UPS delivered them to the wrong house, so it wasn't until my neighbor came over this morning did I finally have them).

Now that the list seems to be settling for plastic enclosures, I will add them up this weekend and place the order this weekend.

If it takes me 10-15 minutes to solder all the components onto one PCB, that's 4-5/hour, so about 20-25 hours of assembly for 100 units (hopefully I can do it a bit quicker)....that means if i can get a few hours each night, I should have them ready to go in about a week or so.

I will keep supplying updates as I go along.

As soon as they start rolling off the "assembly line", I will start asking for PMs with shipping addresses. Then my bride will take over the logistics department!

NC TRACKRAT

Lewis-
Dumb question: Although it's probably a remote possibility, can you think of any way to do a simple QA test on the assembled board to ensure that there are no faulty components?

ltc

As I mentioned earlier in this thread, I would simply apply 12v to the input (blue/grey) and verify each FET is conducting...use a DMM on Ohms or equivalent.

The circuit is fairly basic.

ltc

As of this morning, I checked my spreadsheet against Ash's master list from post # 212.
We have 90 assembled units, 9 "Heathkits" (kind of nice surprise) and 63 enclosures.

I will probably assemble the first unit tonight and run some quick checks on the bench to verify it performs per the schematic
(this will be simply done by applying 12V, then measuring that the output FETs have turned "ON" .... then removing 12V and measuring that the output FETs are "OFF". This can be done with a 12V battery (actually you could use a 9V battery as well) and a hand held meter).

Once everything looks OK, then "mass production" will begin.

I am going to contact the local post office to ask them to order 100 of the USPS Priority Mail boxes. It seems like the quickest/easiest way to send the units out to everyone at a flat fixed rate.

Slow Guy

No problem. I think I was at 4k posts before I figured that out so you're well ahead of me.

ltc

Unit #1 has been assembled and electrically tested.

It's Alive !




Always concerned that something happens with library symbols, net list transfer, fab files, etc, but everything went perfectly.

So, 90 assembled units, 44 solder joints per unit ... Let the fun begin

Blue TTop

Wow! Only 3,960 solder joints left.........

william_b_noble

for what it's worth, I'm trying an experiment with a 4 pole relay that I had lying around that has a 12V coil - it's not as light weight as solid state, but it's another approach to do the same thing. It will be interesting to see if this works for most people

lizSter

hi,
I'd like to be added to the waiting list for 1 assembled with enclosure.
thanks much!

william_b_noble

I'd like to hear others report that this method of shorting the O2 sensor outputs to a single ground work to clear the SAI fault - if it does, I wonder why the relay approach doesn't seem to work - the CEL is on still after 4 or 5 drive cycles.

TxnBluDvl

Ack! Just got back from a week of business travel without real internet connectivity and noticed that there's been discussion of enclosures.

If it's not too late to get my two with enclosures, I'd love to get them too. Sorry for being late to the party!

Ash

Added TxnBluDvl's request for enclosures - not sure if Lewis has already ordered them prior to your request

Also added LizSter's request to be put on the 2nd round list.

See Post #212 for list updates.

william_b_noble

think i figured out why the relay wasn't doing the trick one contact pair must be not closing, I can see normal voltages on one O2 sensor - maybe that's next week's troubleshooting.

SCMomentum

Wow...this is more of what I get for having been deployed...is it too late?
Would love two assembled w/enclosures! Thanks.

~Dave