Differences

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--- interfaces:fs1000a [2016/02/24 16:19]
darron
+++ interfaces:fs1000a [2016/03/23 19:55] (current)
darron
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 {{:interfaces:fs1000aX2.jpg?200}}
+\\ \\
+{{:interfaces:rf-5v.jpg?200}}
 \\ \\
 {{:interfaces:fs1000a.jpg?200}}
-\\ \\
-{{:interfaces:rf-5v.jpg?200}}
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 or 5V VCC.
-The digital input floats at a around -0.8V when unconnected.
+To complement the FS1000A, the RF-5V (or equivalent) exists. This receiver
+module works okay at 3V3 for short distances but is rated for 5V operation
-P.S.
+which is needed for longer distances. It would appear
+that 5V is required to operate the AGC circuit on the board. The AGC can
+produce high levels of noise on the output when no signal is broadcast from
+the FS1000A.
-The 315 MHz transmitter is not legal where I live, however, due to
+The second photo here shows the receiver. In this setup the output is
-the incompetence of one eBay seller I have one.
+fed into a cheap USB sound card whilst the FS1000A sends an AFSK signal.
+On the receiver host minimodem is used to decode the message reliably.