Go Down

Topic: Measure frequency? (Read 3530 times) previous topic - next topic

ON5MF

Hi,

is there a simple way to measure frequencies between 1 MHz and 30 MHz? I'm thinking of modifying my manual antenna tuner to an automatic one.

The resolution doesn't need to be very high, a resolution of 100 or even 500 kHz should be ok.
Current arduino project: universal band decoder for switching antennas and band pass filters

Magician

http://interface.khm.de/index.php/lab/experiments/arduino-frequency-counter-library/
Arduino with 16 MHz clock can't measure above 8 MHz, so you would need divider by 4,

ON5MF

Thanks for the info, will have a look into that.

Of course a devider is not really a problem.
Current arduino project: universal band decoder for switching antennas and band pass filters

MarkT

I have used a SN74LV8154 before to measure frequencies in that range (its a dual 16-bit high
speed counter that can be configured as a single 32-bit counter).  However its output is byte-wide
so a lot of pins are needed to read its output (or a parallel->serial shift register).  Its good to 40MHz
with logic level input.
[ I won't respond to messages, use the forum please ]

Has anyone looked into porting the frequency counter library to the Due?

What would its top end be with its 32 bit timers and 84Mhz clock?

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy