Hi all, Attention UK node owners or prospective node owners...... I have just purchased a bunch of CM108 USB fobs from Ebay and confirm that they work with ACID systems. They have extra buttons on them ( vol up / down and mute ) so this MAY make it easier to wire out to the PTT and COS lines but I have yet to modify one so cannot confirm if this is the case. Anyway, the ebay item no is 270853205309 They are £2.69 each plus P&P at 99p for one....postage discounts available... Bargain! BTW, I have no association with the seller whatsoever apart from being a satisfied customer and wanting to spread some Allstar Joy! Regards and Merry Christmas, Matt G4RKY Nodes 2250, 2237, 2541.........
On Sat, 10 Dec 2011 22:02:01 Matt Beasant wrote:
Hi all,
Attention UK node owners or prospective node owners......
I have just purchased a bunch of CM108 USB fobs from Ebay and confirm that they work with ACID systems.
They have extra buttons on them ( vol up / down and mute ) so this MAY make it easier to wire out to the PTT and COS lines but I have yet to modify one so cannot confirm if this is the case.
COS is usually wired to one of the volume pins, so that should be no problem, but PTT is wired to a GPIO which usually has no other function. If the chip is epoxy-blobbed then there is no reason to bond out the GPIO pads on the chip. That particular housing is very easy to open using a fingernail. Just tease the two halves apart at the join. You will be able to easily see if the chip is packaged or epoxy-blobbed. 73, Andrew ZL3AME
Thanks Andrew, Yup already had them apart and the chip is not blobbed, its all pins exposed like the earlier ones so if it is the case that the GPIO pins are not brought out, at least the pin is still available, happy days! Cheers, Matt On 10 December 2011 13:20, Andrew Errington <a.errington@lancaster.ac.uk>wrote:
Hi all,
Attention UK node owners or prospective node owners......
I have just purchased a bunch of CM108 USB fobs from Ebay and confirm
On Sat, 10 Dec 2011 22:02:01 Matt Beasant wrote: that
they work with ACID systems.
They have extra buttons on them ( vol up / down and mute ) so this MAY make it easier to wire out to the PTT and COS lines but I have yet to modify one so cannot confirm if this is the case.
COS is usually wired to one of the volume pins, so that should be no problem, but PTT is wired to a GPIO which usually has no other function. If the chip is epoxy-blobbed then there is no reason to bond out the GPIO pads on the chip.
That particular housing is very easy to open using a fingernail. Just tease the two halves apart at the join. You will be able to easily see if the chip is packaged or epoxy-blobbed.
73,
Andrew ZL3AME _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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Matt Beasant