Products > Test Equipment
MS05000 Budget Logic Analyzer Probe Set Design
<< < (8/38) > >>
Gandalf_Sr:
About to place the PCB order, here's the (slightly) updated probe PCB
joeyjoejoe:

--- Quote from: Gandalf_Sr on March 22, 2020, 01:40:31 pm ---Not really, I could but it would be way more work for me than it's worth.  I had thought about the major components, ICs, connectors, and ribbon cables, so there could be at least the economy of buying 10s instead of 1s but I don't want to be messing around putting 3 x 0.1uF 0603 capacitors in a marked bag on their own.

--- End quote ---

For a while, with megadesk (https://github.com/gcormier/megadesk) I would use masking tape to tape the components to a piece of paper that had the values printed out. But these were 1206. Resistors would all be together since you can read the values, but caps would be taped separately with their own text/header.

In the end, now people are only ordering fully assembled boards, I think I've probably only sent 5-10 kit orders. I still have the listing up for parts-kits but I might just take it down, as I always try to have 5 sets of loose parts on hand which is just a waste.

I think if you offer all but the jelly beans parts in a kit, that might still have some value - anyone building this for an above entry level scope should be comfortable ordering the jellybean parts from wherever :)
Gandalf_Sr:
I'm setting up a BOM in the Digikey system for all the parts needed, I think there's a way to allow people to order the BOM, I will check with Digikey tomorrow.

I ordered 100 Connector PCBs and 300 Probe PCBs and made them all blue and ENIG (Electro-plated Nickel Gold) finish as it was not much more, it never goes bad, and it's much easier to solder.  It's also EU compliant as far as ROHS is concerned. Also, because ENIG is going to be put in with higher-end orders, I've noticed that the finish tends to be better e.g. legibility of the silk screen.
electricMN:

--- Quote from: Gandalf_Sr on March 22, 2020, 03:04:03 pm ---I'm setting up a BOM in the Digikey system for all the parts needed, I think there's a way to allow people to order the BOM, I will check with Digikey tomorrow.

....

--- End quote ---

You can put all of the items in a cart and share the cart with anyone via a link to the cart. When I was still working I did this all of the time. Fill up the cart with the parts needed and send the link to the buyer. It worked out really well for both of us.

Gandalf_Sr:
OK, here are some Digikey cart share links. These DO NOT INCLUDE THE PCBs NOR DO I GET ANY MONEY FROM DIGIKEY.

1. Share for the parts to build 1 Connector board.

Notes: this cart includes the ribbon cables and has some choices that you need to address...

There is a PTC for P1 which should work fine but, if you want to load the 3.3V supply much (>150 mA), you should consider the ALT P1 part instead which is a ferrite bead.  BOTH are in the cart. They are not much money so you can leave both in the cart or just delete the one you don't want.

You need to pick whether you want 6" or 18" ribbon cables, BOTH are in the cart.  I've only used the 6" ones so far in my testing and they are the ones in the pictures.

2. Share for the parts to build 1 x 3.3V Probe board [Edited] There were 2 U5's in cart, now fixed

3. Share for the parts to build 1 x 5.0V Probe board [Edited] Two U5's and D1 now Red, R12 330R

I think that what you will have to do is create multiple carts and then go to their combine cart feature (Google it).

Remember you will need 1 set of parts for the Connector PCB and a Probe set for each Probe PCB; you need to choose what voltage you want each Probe PCB to be, 3.3V or 5.0V.  I made the 0603 LED Green/Red for the 3.3V/5.0V probe PCBs and this is reflected in the Probe cart links plus R12 is 270/330 \$\Omega\$.

The designation of the components will be printed on the bags you receive e.g "J1,J2", if it's prefixed by "CONN_" it's a part for the connector PCB eg "CONN_J1"

Let me know if it's broken or something is missing or wrong.

Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod