All righty then.
Feeling a little bouyed up by my (eventual) success with my first bash at a vv box mod, I decided to have another go.
I'm still waiting on some 18650 batt boxes to turn up, but I found a 14500 batt box left over from my first go at a 'Garry Dibley' special. I'd also got a couple of altoid tins, 2 small vv boards, 2 led voltmeter displays and a good few switches to play with.
I did an initial component placement in the tin and decided I might just be able to fit the vv board and a display in there.
That done, I soldered up the bits outside of the tin to check they all worked and they all did, so happy days.
Next on the agenda ... drilling holes for the switch, atty connector and the 'master' switch for the batt box. I've found a cone shaped stone grinding attachment that fits nicely in my cordless drill and using this to enlarge my initial drill hole, I ended up with two lovely neat round holes for the switch and atty connector. The master switch hole didn't look quite as neat but it was nicely positioned and worked ok.
Quite chuffed and proud at myself for the nice neat holes, I went on to install the switch and atty connector and glue them into place along with the battery box. I then soldered everything up, put hot glue in place, fitted in the vv board and went to do the same with the led display.
This is where it all started to go wrong. (sigh)
When 'sizing up' to fit the components into the tin, I'd failed to take into account that the generous layer of hot glue would in effect raise the position of the led display and make it a very tight and awkward fit. After much fiddling, fretting and cursing I eventually got it in place.
Time to pop the batts in and fire it up ... and yep, you guessed it a BFFA again.
Time to slump shoulders and break out the multimeter again. Got power from the batts to the switch ok .. got a reading from the in and out channels of the vv board , though the potentiometer didn't seem to be working ... getting the same voltage reading regardless of how much I adjusted it.
I concluded that I'd screwed something up when fiddling about trying to fit the led display in ... so, I fiddled about again and managed to get the display out of the tin, totally knackering it in the process. I then went to desolder the wires from my out channels and OMFG .... NOOOOOOOooooooo! etc.
Hard as it might be to believe, I'd done it again and got the in/out channels messed up. This time I'd got the in channels the right way round but got the + & - the wrong way round on the out channels. Bimbo club strikes again.
At this point, I felt quite hacked off and ready to give up ... so I did.
After a night's sleep, I looked at it again this morning to see if I could salvage anything. The vv board didn't want to work properly ... and who could blame it after being so cruelly abused, but the switch, batt box and atty connector were all still in place and serviceable, so I figured I'd try prising out the vv board and fit the other one in (this time without the led display).
I managed to get the board out without damaging/deforming the tin, soldered up the other board (CORRECTLY THIS TIME YOU FECKIN DIZZY COW!) and lo and behold ... success! (Yay!)
It all seemed to be working ok and so with a sigh of relief, I put a shedload of hot glue into the 'gaps' to try and ensure everything held in place and a little extra 'structural integrity' can never be a bad thing, right?
I sat and had a nice cup of coffee and a vape whilst the glue cooled and hardened. I went back to it and checked again ... all ok.
What a result ... i'd managed to snatch a victory from the jaws of my own incompetence.
I decided to add a finishing touch and put a shorty 510 extender in the atty connector ( I tend to use these quite a lot, cos they protect the actual threads from wear and tear).
Okie dokie then ... day off from work today, nothing that urgent to be doing ... time for a 'burn in' test of my lovely little altoids mod whilst sat in front of me computer. In fact, lets push the boat out and celebrate with a viv nova full of green cow ... just unscrew this other vivi and pop in the green cow one. Hmmm... don't you just hate it when you unscrew the atty/carto/clearo and the 510 extender unscrews with it?
I know, I'll dab a little superglue on the extender threads .. that should hold it in place nicely (ominous music in the background). I mean, when I sent my throathit VV walkie talkie back to Rob for a service, he sent 'my precious' back with a glued in extender that's really stood up to the hammer it gets very well (voices shouting in the distance 'don't do it... DON'T do it ... for the love of god, DON'T DO IT!!!').
Did I hear something then? Meh ... let's get this done.
Dab of superglue on the threads and let's screw the extender in. What's this? It appears to be stuck part way in ...erm this could be tricky ('No shit Sherlock').
I wonder if it's screwed in far enough to fire? Nope, hmmmm... I'm gonna have to try and get this out before the glue sets. (Sounds of foreheads being slapped in the background).
Crikey, it's well stuck in there ('Of course it is you stupid bimbo, it's superglue ... SUPERGLUE! FFS, I may as well be talking to myself ... I'm outta here!').
Is that the sound of receding footsteps I can hear? <shrug> Oh well ... perhaps if I use this pair of pliers I can free it up?
Oh... I think it's working ... it's coming loose. Ah... I appear to have pulled the atty connector out of the tin with it.... the tin that's now jam packed full of dried glue so I can't get to any of the components with out knackering them.... Outstanding.
Yep, I've managed to snatch defeat from the jaws of victory right at the last second.
I've now finished my hissy fit and the tin is in the bin.
I'm trying to be philosophical and take some learning points from this little debacle, so ... notes to self:
Don't try to fit too much into too small a space ... it complicates things and it's awkward to work in confined spaces.
Don't get overconfident and develop delusions of competence just because you can make a few pretty holes.
Always, and I do mean ALWAYS check you have the + & - the right way round (you feckin stupid bimbo).
Don't fill up the inside of your box/tin with glue/epoxy unless or until you're certain you don't need to tweak anything.
And NEVER, EVER use superglue (the clue's in the name, idiot) to try and fix an extender into your atty connector.
So, on the whole ... a pretty crap outcome.
But on a brighter note, the tin I first built, that I predicted wouldn't stand up to a week's worth of normal usage, has done. In fact it's in use right now. So I'll try to learn from this and do a better job next time ... hopefully.