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Member's Forum How do you manage "on stock" component on your personal lab?
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Related

How do you manage "on stock" component on your personal lab?

strb
strb over 2 years ago

I was just wondering, how do you keep track of components on a personal lab?

I started by simply not doing it but pretty quickly found myself searching among an increasing amount of small component bags in search of the most close resistor value or the best op. amp. I have on hand for the job. For general passive components (resistor and capacitor) I've bought a couple of cheap kits but I suppose they were too cheap because values are scattered without an apparent logic (some E12 component, some E24 value, missing E12 values etc...).

I then started tracking available components in a simple Excel table and that for me was a big step forward: I could search any available component at "design stage" without needing to bring out the component box. A couple hours of inventory once saves me from needing to search among bags of component each time I'm designing something or drawing a scheme.

Less than a month ago I switched from Excel to "DB Browser for SQLite". I'm still learning it and using at most basic level but I'm quite pleased with the result even at this early stage.

image

This is my experience so far and I'm not regretting doing it. What's your experience on this matter? Do you have any hints?

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  • baldengineer
    baldengineer over 2 years ago +6
    For personal stock and projects, I tried using all of the various online part-database services. I disliked all of them. Most are highly focused on pulling Octopart data on active ICs. The problem is the…
  • baldengineer
    baldengineer over 2 years ago in reply to markeno +3
    I use one of these for my random strips of parts. Then I place small labels on the "Row" with whatever the part is. https://www.adafruit.com/product/520 You could even put 2 or 3 strips in a single…
  • Andrew J
    Andrew J over 2 years ago in reply to dougw +2
    It’s not a massive commitment recording mechanism is simple and their location is also recorded. When I have a project, I do check what I have in-stock and everything else is ordered. Stuff goes in a project…
Parents
  • baldengineer
    baldengineer over 2 years ago

    For personal stock and projects, I tried using all of the various online part-database services. I disliked all of them. Most are highly focused on pulling Octopart data on active ICs. The problem is the majority of my stock is actually passives. I only buy the actives I need for a project (plus 1 or 2 extra). However, I always buy a lot of extra passives (when I buy them.)

    What really drove me crazy with all of the options is SO. MANY. FREAKING. CLICKS.to do anything. And in the end, they ALL have LOUSY search engines. Personally, I think my ideal solution would be if Octopart let me upload an inventory, and then their search showed my results as one of the distributors. Anyway.

    So, after trying them all, I settled on Google Sheets. I briefly started setting up a SQLite database. But even that had far more overhead than I needed. I just wanted a list of the parts I have with a few key details and a hint on where I put them. And like all organizational tools, it could NOT be cumbersome to use.

    I preferred an online spreadsheet for two reasons: 1) I can easily access it from any of my devices, and 2) Sheets has the magic "query" command. The cool thing about "query" is that you can select a data range and then perform sql-like queries on it.

    image

    Despite the fantastic functionality, I found I didn't need it. The search I found myself doing most often was: "what is the largest capacitance I have in the smallest available package." So for capacitors, I added columns for the farads as farads. And then two additional columns for numeric + units. That way, I can sort on capacitance but have James-readable labels like "10 uF". I did the same for voltage. On resistors, I did something similar.  With those columns simple filtering is all I need!

    image

    On actives, I have found a column to describe the part (Linear Reg, LDO, Op Amp), and then two columns for characteristics is all I needed. (Along with part number.)

    While I know others want a way more complicated database, I didn't. By breaking up type of part into their own tabs and adding a tiny bit of metadata, this lightweight spreadsheet has the critical information I need and is quick to use.

    Whenever I receive parts, I add them to my spreadsheet while handling them. It's a very incremental effort and has drastically reduced my re-order of existing parts.

    If anyone is interested, here is a read-only version of my parts inventory.

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  • strb
    strb over 2 years ago in reply to baldengineer

    I think that in the end I'm doing something similar to your spreadsheet: I find myself mainly using filters too and nothing more. I actually like the additional column with the location of the component and the "sort and label" functionality with numeric value and "human readable" value.

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  • strb
    strb over 2 years ago in reply to baldengineer

    I think that in the end I'm doing something similar to your spreadsheet: I find myself mainly using filters too and nothing more. I actually like the additional column with the location of the component and the "sort and label" functionality with numeric value and "human readable" value.

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  • baldengineer
    baldengineer over 2 years ago in reply to strb

    I had to think back to when I created this spreadsheet. Originally, I started the spreadsheet as a way to organize what I had. I intended to then create a SQLlite database and import the data.

    One of the issues I was concerned about is how different part types have different key characteristics. So, I decided to do separate tabs to understand how I would build the database's schema.

    After doing that initial inventory step, I realized the spreadsheet was all I actually wanted. Plus, I didn't have to build any UI since all of the data sorting/analysis tools were already there.

    Like many projects, I had all kinda of crazy ideas for how to extend the functionality. And I suppose in the future, I could still move to a small database.

    But after committing to this idea for a year, I'd rather solder stuff instead.

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