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PIPPYG version 2.7 - an ultrasonic bat recorder
THERE IS NOW AN UPDATED PIPPYG, VERSION 3.0 - PLEASE GO HERE TO ORDER PCBs : https://www.pcbway.com/project/shareproject/PIPPYG_2_8_2c5cad1b.html
THE REVISED SHOPPING LIST FOR VERSION 3.0 IS HERE : https://www.digikey.co.uk/en/mylists/list/2SSR4C9UXO
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This is a cut-down version of the pipistrelle Bat Detector project, but with the detector and audio output functionality removed, leaving just an overnight / passive recorder. It's a pygmy pipistrelle, hence pippyg.
Designed as an affordable and available alternative to AudioMoth for bat projects during the 'great silicon shortage' when AudioMoths were unavailable, its relevance is somewhat reduced now that AudioMoths are widely available again. However, if you want something AudioMoth-like, at a massively reduced per-device cost - build cost of around £15 per device, i.e about £150 for 10 devices - this may be the device for you.
iOS and Android apps are available to support configuration of the devices for wake/sleep time and device ID via a modulated audio chirp. Additionally the apps add geolocation information to the SD card, so the recordings are identifiable by the location where the device was chirped.
Shopping list at DigiKey to build 5 PIPPYG 2.7s : https://www.digikey.co.uk/en/mylists/list/IWL46SMMZK
WARNING : the PCB layout was changed at 11.04 Monday 27th August to
a) modify all passive component footprints to allow either 0805 or 1206 parts to be used
b) introduce more ground pour pinning around the microphone and op-amp
c) re-route a track around the op-amp to leave the bottom surface a solid ground pour
d) move the red LED to be closer to the corner of the PCB
e) move the spacer to not interfere with the screw hole in the battery holder
f) introduce a pair of 0.47 ohm Rs (or solder blobs) for isolated current return paths for SD interface and LDO / LED
Note, although this layout is virtually identical to version 2.6, and is electrically identical bar the additional resistor, be aware that it has not been tested.
If you are re-ordering PCBs, please order a new stencil to make sure your PCBs and solder stencil match.
PIPPYG version 2.7 - an ultrasonic bat recorder
*PCBWay community is a shared platform and we are not responsible for any design issues.
- Comments(2)
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- Antonio Abejaro Soto Jan 11,2024
- Paul Cryan Sep 21,2023
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- BatDetectorReviews Nov 17,2022
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