Administrators Andres Ramos Posted April 12, 2022 Administrators Share Posted April 12, 2022 Here we are summarizing everything that proves as useful in terms of Best setup for the LINGER (Settings) Which audio feed to use to modulate the LINGER Optimized environmental conditions technical improvements in the LINGER design 1 Quote Link to comment Share on other sites More sharing options...
Administrators Andres Ramos Posted April 12, 2022 Author Administrators Share Posted April 12, 2022 Adding a microphone First outcome of Jonathan's tests and Karyns comments is that it would be useful to implement a microphone in the device to provide means to record the experimenter questions alongside with the spirit signal. Technically this should be done with an electret condenser microphone capsule built into the frontpanel the usual transistor preamplifier a second OpAmp to mix the noise signal from the phototransistor with the microphone Microphone level adjustment is needed->another potentiometer 1 Quote Link to comment Share on other sites More sharing options...
Administrators Andres Ramos Posted April 12, 2022 Author Administrators Share Posted April 12, 2022 5V power supply redesign Rework design down to 5VDC power supply Use USB charged power bank for supply with standard USB charging connector in the housing Consider using the MCP602 douple OpAmp to replace the TL071/2 1 Quote Link to comment Share on other sites More sharing options...
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