DO NOT ORDER THIS - THERE IS A NEWER VERSION

NOTE - THIS IS PROVIDED BY THE DESIGNER AS A SELF-BUILD PROJECT FOR HOBBYISTS AND BAT ENTHUSIASTS.

PCBWAY IS NOT AUTHORISED TO ASSEMBLE THESE FOR YOU, AS THERE IS AN EXISTING COMMERCIAL MANUFACTURING PARTNERSHIP IN PLACE.

ANY ASSEMBLY ORDERS WILL BE CANCELLED.

NOTE TO PCBWAY - THIS LOOKS LIKE A PANELIZED DESIGN BUT IT IS NOT - IT IS A SINGLE DESIGN. THE PART THAT SNAPS OFF IS USED TO BUILD A SOLDER STENCIL FRAME FOR ASSEMBLY, AND TO USE AS A SQUEEGEE FOR APPLYING SOLDER PASTE. PLEASE DO NOT CHARGE MORE THAN $5.

A passive Bat Detector at 384kHz / 16-bit, with between 4 and 7 days battery life from 2450mAh rechargeables, and recording quality similar to AudioMoth.

Build cost about £15 per unit for 10-off. So for £150 you can build 10 units, each comparable to an AudioMoth. A 3D printed mount to simplify attaching the battery holder is now optionally included. Each 3D print makes 5 mounts, so if you order 5 PCBs, only order 1 3D print. If you order 10 PCBs, order 2 3D prints.

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Version 3.4 : minor footprint changes, microphone land pattern changed to recimmended pattern from manufacturer. Added thermal breaks on battery connectors to ease desoldering. Requires new stencil

Changes since 3.0 :

Remove "termination" resistors around SD card

Add test points around SD card

Match SD card footprint of pip 5.3

Similar change to mic footprint

Minor changes to silk screen (changed to "passive bat detector" from "overnight bat recorder" to match what ecologists understand)

Minor changes to capacitor placement - requires a new stencil

DigiKey shopping list : https://www.digikey.co.uk/en/mylists/list/HDSPDDCMJW - builds 5 units.