well i had an extra camera laying around so i thought could o make an FPV arrow for archery and well here it is it uses an Ultra Micro FPV Camera and Video Transmitter from horizon hobby's and a 150mAh 1S 3.7V 45C LiPo Battery and a good old rubber band to hold the two half's together the arrow is an 1/3 inch shaft or 9.5 mm. due to my camera going on the frits i had to get a different camera.

WARNING this can damage your camera, arrow and even bow my camera only lasted 3 shots before the case broke and the camera died. and it will change the flight of the arrow. use at your own risk.

links below for both cameras and battery Camera https://www.horizonhobby.com/first-person-view-%28fpv%29--1/fpv-cameras--1/ultra-micro-fpv-camera-and-video-transmitter-spmva1100

Battery https://www.horizonhobby.com/airplanes/batteries/150mah-1s-37v-45c-lipo-battery-eflb1501s45

second camera https://www.ebay.com/itm/3-IN-1-FPV-Camera-System-including-Camera-Monuting-Bracket-for-BumbleB-Whoop-Pro/152967158334?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D3856226a743c44d883ed3af91f7c7cde%26pid%3D100675%26rk%3D1%26rkt%3D15%26sd%3D152967158334%26itm%3D152967158334&_trksid=p2481888.c100675.m4236&_trkparms=pageci%3Abf68b5c3-625a-11e9-9a8e-74dbd180a9dc%7Cparentrq%3A33d4e2ea16a0a9cb1fadb955ffeb21dc%7Ciid%3A1

Videos https://youtu.be/H0L_XxacoTM https://youtu.be/UKZmw0SbLn4