Yeah it was all relay side, switch out a couple of wires (maybe use something a bit thicker too), and use the higher torque motor.
I did originally try to use a servo and a stepper from geek kit from kickstarter but they were non-(kick)starters.
I've had a look inside a couple of commerical units (mainly because you can see stuff on their install videos and it looks like a geared DC motor (e.g. https://youtu.be/Kw6RZGMiz7I?t=2m22s
As for charging, the commerical units run off 4 AA for a couple of years happily, so the large 4.7v LiPo (4.7v 2700mAh HJ7534100) should go for some time without charging, but that's boring, I was looking at https://www.ebay.co.uk/itm/NEW-Mini-Solar-Lipo-Charger-Board-CN3065-Lithium-Battery-Charger-Board-Module/173335088589?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D42ddb3fc36d742b49a20773034fd7809%26pid%3D100675%26rk%3D2%26rkt%3D15%26sd%3D163059043652%26itm%3D173335088589&_trksid=p2481888.c100675.m4236&_trkparms=pageci%3Ab37bf9ca-6faa-11e8-8bde-74dbd1800b6a%7Cparentrq%3Afd5a852a1630aada0a15920bfffaf3e8%7Ciid%3A1 and then a small solar panel just to trickle charge it when the sun is around. Its going to be two motor winds a day, and two wifi connections to send a message and then deep sleep so I don't think it'll use much.
Anyway, whilst I wait for the motor I've got some nesting boxes to build. Thanks for all the help
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