View Full Version : Max prop overclocking speed
05-23-2010, 01:00 AM
I was just wondering how fast the propeller's max·operating speed is? I am not talking about theoretical limits, i mean actual tested speeds. Come on guys, this is your big chance for bragging rights. I know some people have pushed it over 110 MHZ, but I'm thinking someone else has done even better.
05-23-2010, 01:50 AM
There's detailed information on this in the Propeller datasheet showing maximum system clock speed vs. ambient temperature and supply voltage. The data points on the graphs are tested.
It hasn't been fully characterised at those speeds, though.
Amateur radio callsign: G1HSM
05-23-2010, 02:25 AM
I think the fastest so far is 141.875776 MHz by me :)
See this thread http://forums.parallax.com/showthread.php?p=817374
and a YouTube vid www.youtube.com/watch?v=wbcqR8L3dMo (http://www.youtube.com/watch?v=wbcqR8L3dMo)
A lot depends on the Propeller itself, not all Propellers can do this speed and I only tried with DIP40.
PS It was by no means a scientific test it was done purely for a bit of fun....
PropGFX (http://www.propgfx.co.uk) - The home of the Hybrid Development System and PropGFX Lite
05-23-2010, 04:08 AM
Next up: Liquid Nitrogen?
05-23-2010, 04:55 AM
All right, Coley here has 141 MHZ. He is the winner so far.