Rod Hutchinson wrote: Is it a tactile switch behind the door?
Hi Rod, yes one of these on the floor of the cab. I foolishly took it apart first to weaken the spring slightly. An idea I almost immediately regretted.
Thanks Si, yes a steadyish hand and get in and out of there real quick!
It is not a particularly fine point as can be seen...but I have found it small enough for soldering on SMDs of the 1206 variety. I am not even going to contemplate the smaller variants, hats off to those that do.
I have to be honest: I simply cut off the existing 805 LEDs on the charging module.
Your idea of a needle in the end of a standard tip sounds worth investigating, but would you be able to tin the tip successfully? You would also need to make it a tight fit and push it in while the iron was at full temp...or I suspect it may fall out in use otherwise....interesting idea!
Well, it appears that the Li-Po battery I originally had intended to use cannot deliver the amps to the booster. It was a flat, oblong 1000mAh battery and cost less than £4...I guess I still have not learnt the "get what you pays for" lesson!
Tests with a Li-ion 18650 (a genuine Panasonic part) showed that was the direction I needed however the 18650 was too big. In my search I found an 18500, a size I didn't know existed. (You'll probably be aware with Li-Ion part numbers the first two digits are diameter and the rest the length, in this case 18mm x 50.0mm)
This cell is rated at 2000mAh, here it is with a PP3 for scale:
This cell works fine, and though double the price of the Li-Po it's increased (and more likely to be genuine) capacity is a nice bonus.