This is the receiver for the previous transmitter. The signal consists of digital pulses with a compatible TTL or CMOS output. The integrated circuit is a 4093 and a photodiode of any type.
This is an example of a temperature sensor shield using the Texas Instruments TMP390 obtained from...
This circuit, which appears from other sources in this section, allows you to control a load...
This is an experimental crystal radio that uses no power source. The antenna must be very long (at...