Questions tagged [transmit]

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PIC18F UART transmit not stopping

I am trying out the UART on the PIC18f45k50 for a project but when I try to transmit, it seems that the PIC keeps on transmitting "Hello World" indefinitely. I have tried turning off the ...
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2answers
75 views

How to estimate antenna transmit power?

I've recently written a program to predict power density around antenna for compliance with radiation limits. One of the parameters required for the program is antenna transmit power. Antenna transmit ...
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2answers
87 views

Are there multiple bits on a data cable at the same time?

Let's say there is a copper under sea cable from New York to Lisbon with a length of 5350km. Then a signal needs approx. t = 5350km/c ≈ 19ms to arrive. Now let's imagine sending a file from New York ...
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1answer
27 views

Reading Data sheets mA (transmit)

I've attached a picture from a data sheet(RN42 Bluetooth module) that I've been looking at. The amount of current specified for transmit is 45mA, is this per a packet of data sent ? So to send 1 Mbyte ...
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1answer
387 views

When an HC-05 Bluetooth module receives data via wireless does it write it to receive(rx) pin or transmit(tx) pin?

I'm using an HC-05 and I have it successfully wired up to my ATMega328P so that the HC-05 Tx is tied to the ATMega328 Rx and HC-05 Rx is tied to the ATMega328P Tx. So I'm assuming that the data ...
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1answer
187 views

Least overkill solution to transmit single bit wirelessly [closed]

I am looking for suggestions to transmit just a single bit wirelessly, through walls (limestone) and at a range of ~30-50ft. The purpose is a simple motion detector which produces a status bit and I ...