Parts identification for Eggtime Ion Altimeter

[DirkTheDaring]

I'm starting assembly on the Ion, but I'm having trouble identifying the capacitors. It's supposed to have this:

__ 3 .1 uF 1206 ceramic multilayer capacitor (brown) (not marked, but they;re in a PAPER carrier)

But I don't see anything with a paper carrier and I can't identify anything missing from the picture in the manual. (In other words, these capacitors don't seem to be in the picture in the manual).

I have one component I'm not 100% sure of (see picture), but it's in plastic, so I assume that it's the
__ 1 22 uF 1206 ceramic multilayer capacitors (brown) (not marked, but it’s in a CLEAR PLASTIC carrier)

Am I missing something or just being stupid? (lol, that's a joke son, but not much of one)

Since it's a weekend I hope someone from this group can help me before I contact Eggtimer directly.

Thanks!
Ken

 

[BEC]

You'll find Cris included four or five of the 0.1 µF capacitors and they will be in a paper carrier like the resistors are. That's your 22 µf capacitor. It's also thicker than the other caps or the resistors.

Also, Cris is pretty responsive to email queries.

 

[DirkTheDaring]

Looks like I didn't get it. I'll shoot Chris a note. Thanks for the quick reply, Bernard.

 

[waltr]

You'll find Cris included four or five of the 0.1 µF capacitors and they will be in a paper carrier like the resistors are. That's your 22 µf capacitor. It's also thicker than the other caps or the resistors.

Also, Cris is pretty responsive to email queries.

The Clue is multiple 0.1uF caps and only 1 22uF cap.
Yes, and the 22uF cap is thicker.

 

[DirkTheDaring]

Are these the .1 caps? They are unlabeled but not in a paper carrier.

Oh wait! All this time I thought these white carriers were plastic. Now I realize that they are paper and all is clear. I hope.

Thank you for your tolerance!

 

[waltr]

Yep, that's them.
Good luck on the build.

 

[DirkTheDaring]

Yep, that's them.
Good luck on the build.

Thanks, and so far, so good.

 

[BEC]

Glad you got it sorted....

 

[DirkTheDaring]

Passes preliminary tests. Further testing tomorrow. Woot! Thank you for the help.

 

[BEC]

I was happily surprised when the first one I built fired up on the first attempt. The second one I was a little sloppier on...but it's OK now. Have fun!

 

[DirkTheDaring]

I have a flakey connection on it somewhere. Gotta look at every joint, sigh.

 

[cerving]

Check your battery connector... I've seen some loose ones. If you wiggle the battery wires and it resets, that's it.

 

[BEC]

Yup - I just went through that little bit of "fun" with one of mine. There was solder on the pin of the connector but it wasn't flowed over the plating on the hole it went through. Looked OK, but motion (like ejection) caused it to reset.

 

[DirkTheDaring]

Check your battery connector... I've seen some loose ones. If you wiggle the battery wires and it resets, that's it.

Yes, that is my most likely candidate. Probably won't get a chance to look at thoroughly for another day or two.

 

[DirkTheDaring]

Re-soldered a few joints and it's up and running! Thanks for the help! Not sure when I'll be able to launch it, but I'd like to know if it's at least measuring pressure. I'm still googling, but if you have a pointer to how to do this, I'd appreciate it. I don't need accuracy, I'd just to like to know if it's working at all.

 

[BEC]

I don’t know if the ION will respond to the put-it-in-your-hands-and-suck test as I’ve not tried it, but perhaps it will. See at about 3:40 in the video on this page, which is about the original AltimeterOne: https://www.apogeerockets.com/Electronics-Payloads/Altimeters/Jolly-Logic-AltimeterOne

I have a small plastic bottle with a syringe attached by a piece of tubing that I use for ground checking altimeters that I got from Adept a number of years ago. That’s how I did my initial tests of mine.

 

[cerving]

I've stuck the ION just inside the hose of a vacuum cleaner to test it... don't let go, though!

 

[OverTheTop]

A digital multimeter with a capacitance range is a handy thing to have for SMT parts identification.

Always inspect your soldering with at least 10x magnification to pick up the dodgy joints.

 

[DirkTheDaring]

Thank you both. I’ll try both techniques.