We will assemble the π•pistrelle bat listening and recording device by https://www.omenie.com (version 5.3) using the techniques of stencil paste printing, surface mount assembly, and hotplate reflow. We will also learn a technique that stops your hands from shaking, so you can very very precisely place microscopic parts. No prior experience or knowledge of anything electronic needed. Caffeine use is not recommended immediately before. All tools are provided. You will need your own headphones (3.5mm) and optionally a microSD card if you want to do recordings. Related events: - Workshop: Eavesdropping on Eastnor's bats (Sat 13:00, Workshop 2) - Bat walk (Sat 20:30, Lounge) This event has limited capacity. People who attend the "Eavesdropping on Eastnor's Bats" workshop will have first opportunity to sign up, and remaining places, if any, will be First-come, First-served. Age range: 12+, younger participants welcome if they can do focused work for 2 hours at a time Cost: £20/kit if you want to keep the device, spectators free