4 layers61.5 × 21 mm

Analog front end
AllenNeuralDynamics/harp.device.lickety-split
0360: an ephys-compliant capacitive lick detector
55 parts5MIT
Boards in 1 GitHub repository, designed in KiCad, that use the REF3433QDBVRQ1 by Texas Instruments (-40℃~+125℃@(Ta) 10mA 24uVrms 3.3V 3.8V~12V 6ppm/℃ 95uA Fixed Series ±0.05% SOT-23-6 Voltage Reference ROHS). See how each wires it, with its parts, size, README and files; the REF3433QDBVRQ1’s symbol, footprint and pinout are on its own page.

AllenNeuralDynamics/harp.device.lickety-split
0360: an ephys-compliant capacitive lick detector