Re: Interesting and novel electronics / hardware thread. - Components, parts, prebuilt , anything useful
Posted: Fri Mar 26, 2021 3:40 pm
https://nl.aliexpress.com/item/40004153 ... web201603_
these are interesting
these are interesting
Ok, here is an update after I FINALLY got the correct leds.jph wrote: ↑Sat Apr 24, 2021 10:08 am@JackZ
Hello Jacques and good morning. You appeared to be very interested in the following so I wanted to add far more info as promised.
Regarding the square push button switches with LED (the MCP 'type') ones that are mentioned earlier in this thread.
I thought you (and others) may appreciate an update now I have them here.
First, they are of superb quality. Really first class. A very positive push action with great feel. About 3 or 4 mm of travel. Definite positive 'click' - top quality feel . If I were to mark the quality of various aspects of the unit, then it would simply be 10 out of 10 for all - especially as a sample I have out of the ordered ones was stripped down on the bench here so the overall quality can be properly assessed.
As mentioned in the first post they come with a red led - the only option. I mentioned replacing the red with a tricolour unit, but, on disassembly, it is clear that the most appropriate path is to simply replace the red with a greed LED (or whatever colour you require).
The LED you need is an 'square' led (as they are called.... - but really rectangular.. but hey ) of size 5x2x7 mm.ie, the visible part is 5 x 2 mm, and the length is 7mm. the 5x2 is standard, the length can be 5 or 7 so make sure you go for the 7mm unit.
There is no soldering required to replace the led. The led power is transmitted by brass springs to the base. It is a simply swapped out. I have ordered a mixed pack of single colour 2x5x7 leds and will show the fitting when they arrive, but I am sure you can get the picture.
I include images of the unit completely disassembled for info. I learnt, after complete disassembly, that you actually only need to (carefully) remove the actual push button and the white LED holder beneath. This can be done with a couple of guitar pics - for example/ - I can provide more details of needed. The rest of the unit can be untouched, but, the images are useful for seeing the construction.
The actual switching part is first class quality - as is the whole unit.
Here are some images - I can add more detail if needed but it really is only a case of carefully removing the actually push button part and sub assembly / led holder.
The LED is not soldered!. it is simply bent pins connected to two brass springs about 2.5cm long that connect the LED to the actual bottom pins on the unit. Really neat.
You see the actual springs in some of the images.
Hope these make sense - and please excuse the crappy camera on my phone
Switch completely disassembled (NOT needed for LED change - as I found out ) but good to see - and I needed to do this to actually see WHAT needed to be disassembled and, what the internal quality was.
Parts laid out next to full unit.jpg
These parts below are actually the only parts need to be removed to change the led.
Only parts to remove and change.jpg
The right hand parts are the only ones needed to be removed and altered. (the white part with the LED which is under the switch button)
Comparison of size in relation to a standard Arduino UNO.
Close up of the actual internal switching mechanism (quality !)
Switching mechanism quality.jpg
The leds' I ordered were cheap as chips -
Just ensure you use Aliexpress tracked shipping - only a couple of dollars more and get here in a week or two.