Gosh, it's really been a while.
I have many projects on the go and I flit between them.
Subs are getting a bit of attention right now.
I've finally worked out how to program my radio to, I THINK, run a dive pump. I can control a servo output channel from full deflection to middle point to full deflection with either a knob or a three position switch. yay. that had been stressing me out a bit.
I've got a peristaltic pump and a latex balloon and so far i've not been able to get a complete seal between the pump hose and the balloon, i was trying a wire twist to lock the latex into the groove on the hose joiner, probably not tight enough. I'm going to see if i can find some kind of spring clip for this job, i don't think a cable tie is going to do it.
I've emailed about https://www.mr-rcworld.co.uk/shop/dive-pump-controller/ to ask how it actually interacts with the radio and if my assumptions about it are correct. Assuming I'm not stupid I'll get one of those on order with a failsafe.
I believe I could perhaps do failsafe in my radio but perhaps having it in hardware is better.
I've got my rudder and elevator(what do subs call those?) servos mounted to a printed carrier so I can start to rig up the stupid number of things that need to go down that tube.
heh, and I'm back on the 50mm tube so I can clamp it with external rods. I've backed away from trying to seal internal ones.
More next year when i make the next bit of miliimetric progress. All the fun to come with magnets and bellows and waterproof drive couplings... may yet go for a 'runs in water' motor, sob.