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 LK8000 International Support
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 Connecting FLARM, Vario, Radio via WiFi Interface
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antonka
Pulcino

Austria
11 Posts

Posted - 08/04/2021 :  01:54:13  Show Profile  Visit antonka's Homepage  Reply with Quote
The Wroom 32 and Wroom 32D Modules are fine. 4MB Versions are fine. 8 and 16Mb work as well but are not nescessary.

Never use S2 for this porject. They only support 2 Serial Channels.
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Fox
Pulcino

Italy
26 Posts

Posted - 08/04/2021 :  11:48:49  Show Profile  Reply with Quote
I have found on Amazon market this model " ESP32 NodeMCU Module WLAN WiFi Development Board with CP2102 " from az delivery https://www.az-delivery.de/en/products/esp32-developmentboard hope it woking fine
can't find Node32s
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antonka
Pulcino

Austria
11 Posts

Posted - 12/04/2021 :  15:44:38  Show Profile  Visit antonka's Homepage  Reply with Quote
az-delivery is known for good quality and you will not have any problems as the software works fine for a standard setup.
Just be careful with the MAX3232 PCBs.
I had many of them not working. And you need a good step down converter for the ESP to get it working on 12V. A Linear Regulator is no good solution as they waste to much energy.
I did my first atempt like this: http://www.kaser.at/img/Version-1.pdf - sorry its in german...
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Fox
Pulcino

Italy
26 Posts

Posted - 13/04/2021 :  12:54:44  Show Profile  Reply with Quote
Thanks to AlphaLima for sharing the project

My esp works well at home, hope the same on air :-)
I have only change on config.h the bound rate for my old garmin gps to test it

@antonka
I have use a fixed DC>DC step down converter 12->3.3 v to power ESP32 and TTL>RS232 converter, that is the same to your, now all work good.





Edited by - Fox on 13/04/2021 12:55:56
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fabe
Pulcino

Belgium
12 Posts

Posted - 11/11/2021 :  21:45:59  Show Profile  Visit fabe's Homepage  Reply with Quote
Hello,
Thanks to AlphaLima for sharing the project.
Are there other PCB projects (with or without components).
If so, can we buy them.
Thanks in advance.

Fabien
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antonka
Pulcino

Austria
11 Posts

Posted - 26/11/2021 :  09:23:42  Show Profile  Visit antonka's Homepage  Reply with Quote
I made 3 fully assembled PCBs for the project.
- one with RJ45 für FLARM and RJ11 for FLARM-PLug, COM0 and COM2.
- one with RJ45 für FLARM and RJ11 for FLARM-PLug, COM0 and COM2+ELT
- one with 4 RJ45

for COM1 ( FLARM in my case ) i use a MAX3222 to be able to switch the TX line on/off. - Via software, switch or solder point.

http://www.kaser.at/img/Version-3.pdf
http://www.kaser.at/img/Version-4.pdf

If you want to supply the ELT with GPS info you have to use my Software. Otherwise you can use the Standard Firmware with a "brownout" workaround. - you get that from me....
- dont use BT. never worked stable for me. If you get it working, let me know.
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antonka
Pulcino

Austria
11 Posts

Posted - 28/12/2021 :  18:52:22  Show Profile  Visit antonka's Homepage  Reply with Quote
in the meantime I changed 2 more things in the wifi initialisation:
I set a channel. And I reduce wifi power so the squelch of the radio can stay low!


int channel = 1;


uint32_t brown_reg_temp = READ_PERI_REG(RTC_CNTL_BROWN_OUT_REG); //save WatchDog register

WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector



//AP mode (phone connects directly to ESP) (no router)
WiFi.mode(WIFI_AP);

WiFi.softAP(ssid, pw, channel); // configure ssid and password for softAP
delay(2000); // VERY IMPORTANT
WiFi.softAPConfig(ip, ip, netmask); // configure ip address for softAP
WiFi.setTxPower(WIFI_POWER_2dBm); // MINUS_1dBm, 2, 5 7 8_5 11 13 15 17...

WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, brown_reg_temp); //enable brownout detector


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