Learning to solder tiny SMD components with a hotplate - JLCPCB
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- Опубликовано: 15 июл 2024
- Third time lucky? It's time to give SMD soldering another go with another new toy. This time, it's a hot plate. Well, actually, two hot plates. One tiny one, and one slightly ess tiny one. It wasn't as easy as I expected, but isn't that always the way?
This video is sponsored by #JLCPCB: jlcpcb.com/?from=John
The PCB being built in this video is my new camera trigger design. It's based on the intervalometer I built on a breadboard in 2020, although some of the components have been upgraded. The ESP8266 has been upgraded to an ESP32-S3, the DS1307 has been switched out for a more accurate DS3231 and the two 4N25 optocouplers have been swapped out for a single TLP291-4 quad optocoupler IC.
If you didn't see my DIY intervalometer build, you can watch it here: • Custom timelapse rig f...
Mentioned in this video:
65W USB-PD Hot Plate - s.click.aliexpress.com/e/_Dnq...
400W Hot Plate - s.click.aliexpress.com/e/_DdW...
Topnik TK83 Flux - amzn.to/3yugVVd
TS100 Soldering Iron - s.click.aliexpress.com/e/_Dks...
Pinecil Pine64 Soldering Iron - s.click.aliexpress.com/e/_DBo...
AIM 62/36/2 Solder - www2.mouser.com/ProductDetail...
00:00 Introduction
00:14 65W USB-PD Hotplate
01:00 400W Hotplate
01:33 JLCPCB Sponsor Segment
02:11 Today's board (Intervalometer)
04:16 Populating the board
05:47 Checking LED Polarity
06:53 Capacitors & Resistors
07:47 Melting some solder
08:46 Fixing problems
10:36 Soldering the voltage regulator
11:07 Drag soldering the TLP291-4
12:48 Drag soldering the DS3231 RTC
13:28 Soldering the ESP32-S3
14:33 Soldering the 2.5mm TRS Socket
14:57 Thoughts on hotplates
15:51 I need your help! :)
16:24 The board works - Firing a camera!
17:36 Coming to GitHub soon...
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Many thanks to JLCPCB for sponsoring this video! jlcpcb.com/?from=John
Impressively intricate and precisioned PCB soldering with informative and interesting presentations. Look forward to your next video.
Thanks Peter! :)
Hi John, I agree with your assesment, the solder paste application was the cause of your problem. The syriinge approach does not really work with small components, the stencil with the correct solder paste thta has not expired would have given you a much better outcome. One of the problems with solder paste is that it needs to be stored at or below 25 dec C - you would need to check the specific paste you are using for its storage requirements. I buy solder paste from local suppliers as i am hoping it would give a greater probability that it was shipped and stored correctly.
Thanks, Andrew! Yeah, I think you might be right on the solder expiring. There's no date on it or the packaging and it was purchased fairly recently, but there's no telling how long it was sitting in some random warehouse in the wrong conditions. Are there any particular brands or specific types of (leaded) solder paste you'd recommend?
@@JohnAldred Sorry for the late reply. Unfortunately I have no specific recommendation for you on the supplier recommendations. Before I start any SMD work, I test how the consistency of the paste and if it is not smooth, I dump it and buy another. I take great pains to store my paste in a cool place, if I get a year out of it I am pleased.
HA! Clever using the same form factor as the Arduino!
This triggered me ;)
Haha, sorry! :)
Would it be possible to regulate a mobile cooking plate to get something like this?
It's definitely possible, but I'm not sure how efficient it would be. Most cooking hotplates don't have a flat surface, so there's a lot of air between the hot surface and most of the board. So, it would likely require more juice to get the board up to temp. What you could look at is converting an old iron. I've seen a few of those. Electronoobs has a good video about that. The principles and circuits he shows should work with a cooking hotplate, too.