Another "Not about HiFi" project... (but about sound)

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jack
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#1 Another "Not about HiFi" project... (but about sound)

Post by jack »

Biggish order in at DigiKey... (thanks to Shane for putting me onto this one!)


"Perishable" ?????

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There was a cold bag in there... I'm thinking perhaps pecan pie ? Pretty please ?

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...with an ice pack... solder paste for making batches of SMD boards - lasts longer if kept cool, e.g. in the fridge... Top marks to DigiKey! 24 hours from the USA...

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Last edited by jack on Wed Aug 16, 2023 4:13 pm, edited 4 times in total.
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#2 Re: Another "Not about HiFi" project...

Post by jack »

10 x Pi Picos in there... and a 1,000 or so other bits... all SMT

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#3 Re: Another "Not about HiFi" project... (but about sound)

Post by shane »

The more I see this, the more I’m glad I didn’t try to take it on myself.

I had a text from my son a while ago asking if I could put together one of these for him:

https://www.pcbway.com/project/sharepro ... 872e2.html

Never having tackled any surface-mount stuff before I volunteered to have a go, but didn’t give myself more than a 50% chance of success.

Knowing Nick (Jack) is something of a subject expert in both SM and bat detection I canvassed his opinion of the product and boy, am I glad I did! As you can see he’s dived in head-first, and I’m confident that his chances of success are a very great deal higher than mine!!
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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#4 Re: Another "Not about HiFi" project... (but about sound)

Post by jack »

These are the ones I'm building - it's the "full fat" version...

https://www.pcbway.com/project/sharepro ... deed4.html

Building 10, you hit all sorts of price breaks that really reduces the per unit cost, plus you get free delivery etc. which helps as well. The Digikey site is really good at helping you hit the breaks, i.e. if you say order 30 of something, it might pop up and point out the by ordering 50 it's cheaper than ordering 30 because the price break is so large. On one item I needed 80 of a particular SMT resistor, but it was significantly cheaper to buy 100.
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Ray P
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#5 Re: Another "Not about HiFi" project... (but about sound)

Post by Ray P »

Nick, I've been using this stuff with great success - no need to refrigerate and with a a long shelf-life - so far, no sign of it 'going off'.

https://www.mouser.co.uk/ProductDetail/910-TS391SNL50
Sorry, I couldn't resist!
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#6 Re: Another "Not about HiFi" project... (but about sound)

Post by Ray P »

Really interesting project BTW.
Sorry, I couldn't resist!
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#7 Re: Another "Not about HiFi" project... (but about sound)

Post by jack »

Ray P wrote: Thu Aug 17, 2023 6:38 am Nick, I've been using this stuff with great success - no need to refrigerate and with a a long shelf-life - so far, no sign of it 'going off'.

https://www.mouser.co.uk/ProductDetail/910-TS391SNL50
I have some lead free paste too, however this project, specifically the Pi Pico daughter boards and the microphone, mean a specific thermal reflow profile has to be used and that means PbSn.
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#8 Re: Another "Not about HiFi" project... (but about sound)

Post by Ray P »

👍
Sorry, I couldn't resist!
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#9 Re: Another "Not about HiFi" project... (but about sound)

Post by jack »

I like solder masks. V. cheap and much simpler than alternatives...

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#10 Re: Another "Not about HiFi" project... (but about sound)

Post by shane »

Watching with interest….
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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#11 Re: Another "Not about HiFi" project... (but about sound)

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#12 Re: Another "Not about HiFi" project... (but about sound)

Post by jack »

Not my best effort at SMT, but it's the first of 10... First time trying out my new hotplate as opposed to using a reflow oven. For some reason the surface tension doesn't seem as effective in pulling all the components into line as the reflow oven. Maybe its just me.

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#13 Re: Another "Not about HiFi" project... (but about sound)

Post by shane »

Any updates on this, Nick?
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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#14 Re: Another "Not about HiFi" project... (but about sound)

Post by jack »

shane wrote: Thu Oct 19, 2023 6:56 pm Any updates on this, Nick?
Guilt mainly. I've had a mad couple of months and no proper holiday for a year or so, so am having a week off then will be back on it.
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#15 Re: Another "Not about HiFi" project... (but about sound)

Post by shane »

jack wrote: Thu Oct 19, 2023 11:00 pm Guilt mainly.
No need! No rush.
The world looks so different after learning science. For example, trees are made of air, primarily. When they are burned, they go back to air, and in their flaming heat is released the flaming heat of the Sun which was bound in to convert air into tree.
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