Or you could just install a time delay relay board.
···
they weren’t designed as full interfaces with all the signals that a DMK or their own RB URI brought out, hence the price (and thinking board form factor) and feature set.
nod … correct, I knew that when I bought it, but didn’t think this all the way through (as usual!!!). I do have a URI and URIx but really liked the repeater maker interface so I picked one (along with others) up at Dayton this year
to give them a try.
Kyle K0KN in Olathe KS wrote a set of scripts that do fan control based on the event subsystem setting a flag after x seconds on transmit, setting a GPIO pin, running them for y seconds after the repeater goes
idle. DMK published a simple schematic for a relay circuit that buffers the GPIO; 1 resistor, 1 diode, 1 transistor, and a pcb relay. Been using his scripts and that circuit since '11, with zero issues to control the fans on my machines here.
Thanks for that! I went and looked at Kyle’s scripts and that looks like exactly what I need, so I may need to get creative to make this thing work, unknown at this time if I’ll be able to pull it off or not.
Stephen
K1LNX
On Tue, Jun 21, 2016 at 7:46 AM, Bryan D. Boyle bdboyle@bdboyle.com wrote:
they weren’t designed as full interfaces with all the signals that a DMK or their own RB URI brought out, hence the price (and thinking board form factor) and feature set. Looks like they were designed to interface between a radio by direct
plug in on the header on the back of the CDM and a computer running app-rpt and not much else.
I’m thinking anything extraneous to that mission was left out, since there are multiple options (DMK,RB, DIY) that already accomplish the same thing.
Kyle K0KN in Olathe KS wrote a set of scripts that do fan control based on the event subsystem setting a flag after x seconds on transmit, setting a GPIO pin, running them for y seconds after the repeater goes idle. DMK published a simple schematic for a relay
circuit that buffers the GPIO; 1 resistor, 1 diode, 1 transistor, and a pcb relay. Been using his scripts and that circuit since '11, with zero issues to control the fans on my machines here.
–
Bryan
Sent from my iPhone 6S…No electrons were harmed in the sending of this message.
On Jun 21, 2016, at 07:24, Stephen - K1LNX k1lnx@k1lnx.net wrote:
Hi guys,
I’m running a pair of UHF CDM1550’s in full duplex with one of the new Repeater Builder Rim “lite” RM interfaces:
http://www.repeater-builder.com/products/usb-rim-lite.html
It does not look like I can tap the GPIO’s very easily on these boards, nor can I tell if GPIO 5-8 is available for general use looking at the schematic:
http://www.repeater-builder.com/products/pdfs/RB_RIM_Max.pdf
What I’d like to do is drive a relay board to switch a fan on if the receiver is active or there is traffic coming in to the node, being connected to another station or hub for example. I read over the GPIO and event management subsystem
documentation, and it looks like that’s what I need, but I don’t have a parallel port nor can I tap the GPIO’s on my interface easily (or even know if they can be used as per the above).
Looking for ideas here if anyone else has encountered this, would prefer the logic/relay board approach vs. say a temperature controlled switch on the heatsink or something.
73
Stephen
K1LNX
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