Unsigned.IO Forum

YT2CQ

Member

Registered: 2015-05-08

Posts: 1

I-Gate

Hi,
I am planing to make APRS I-Gate with Wireless router.
On TP-Link WR-741ND is instaled OpenWRT and APRX. And its work OK. http://aprs.fi/info/a/YT2CQ-10
Problem is with decoding. I dont have decoded packets (signal on pin A0 is ~200mV ) and RX led on pin 10 not working.
Hardware is Arduino mini pro 3.3V 8Mhz and I try both FW:
microaprs-3v-ss-latest.hex and microaprs-3v-kiss-latest.hex

Any hint wath to do?

73 Mili YT2CQ

Stanley

Member

From: Kuala Lumpur, Malaysia

Registered: 2014-12-01

Posts: 65

Website

Re: I-Gate

Hi YT2CQ,

You need the KISS firmware ( microaprs-3v-kiss-latest.hex ) and set the aprx.conf to KISS protocol ( I forgot about the speed setting, I think it was either 9600 or 19200 )

I have a few of these modems running KISS mode with APRX running fine on TP-Link routers..

You will need the correct USB-Serial drivers for linux

---

Stanley
9W2SVT/ N5SVT
http://9W2SVT.blogspot.com

markqvist

Administrator

Registered: 2014-12-01

Posts: 112

Re: I-Gate

Hi there!
The 3.3v Pro Mini running at 8MHz won't cut it! That's why it's not working. The firmware is currently hardcoded for 16MHz, so the timing of everything will be totally off if you use an 8MHz clock. You can try modifying the firmware yourself, but I am doubting that 8MHz will provide enough clock cycles to make it work.

- Mark