RS232-TTL

Once upon a time somewhere in 2015 i bought a couple of these little converters RS232 tot TTL.

T2k60XXmhOXXXXXXXX_!!12774208

Here is how they work

From the RS232 Port – RX, TX and GND.  Thats the -> -<and the – signs.  Easy enough

– GND

-> RX

<- TX

On the TTL (Arduino)  side – DO NOT USE 5V use 3.3V as this toasts the device and heats up and like tops itself.  It certainly got very toasty when I put 5V across it.  This could be because I messed up somewhere in the wiring but it certainly works well for me.  I can also use the SoftwareSerial library as well so I don’t need to use TX/RX on the TTL Serial pins 0 and 1

So TTL is

– GND

-> – PIN X

<- PIN Y

For my device I used PIN 0 and PIN 1 – TX/RX – but I guess you can use other pins.

TTL RS232 Pinouts
TTL RS232 Pinouts

 

 

 

Hope this helps – it does work!

 
 

Gadgets schematics

Often i buy myself some small gadgets, only to forget about them .This plcae is my storage of these items and their technical descriptions etc


3Watt audio amplifier

PAM8403A

 


Stepmotor driver : EASYDRIVER

EasyDriver v4.4

https://i2.wp.com/www.schmalzhaus.com/EasyDriver/EasyDriver_v43/EasyDriver_V43_Description.png?w=1170

http://www.schmalzhaus.com/EasyDriver/index.html


AETHER DIGITAL POTMETER

1pc NEW Aether X9C103S Digital Potentiometer Module F

Supply voltage: 3V-5V
Chip: X9C103S
PCB board size: 2.7 * 1.3CM
10K span potentiometer.
Colour is sent by Random
Potentiometer center tap between 0-10k slide in total 100 (potentiometer wiper typical impedance 40 ohms)
VL and VH digital potentiometer sliding rheostat port corresponding to the low-end and high-end, allowing the input voltage range -5V to + 5V.
Package Included:
X9C103S Digital Potentiometer Module


433MHz RF receiver module specificaties:

– Product Model MX-05V
– Werkt op: 5V
– Ontvangstfrequency: 433.92MHZ
– Ontvanger gevoeligheid:-105DB
– Maten: 30 * 14 * 7mm

433MHz RF transmitter module specificaties:

– Product Model: MX-FS-03V
– Werkt op: 3.5-5.5V
– Werkmodus: AM transfer rate: 4KB / S transmit power: 10mW
– Zendfrequency: 433M

433Mhz RF zender en ontvanger


 

RADAR DETECTOR

Shengyang MH ET Live HB100 X 10.525 Ghz Magnetron Sensor 2 16M Doppler  Radar Menselijk Lichaam Inductie Schakelaar Module voor Ardunio - Aliexpress


AT-09 – Bluetooth

Arduino – AT 09 BLE module

https://www.studiopieters.nl/arduino-at-09-ble-module/


Opentracker_OT+SMT

https://www.argentdata.com/products/otplus.html

OpenTracker+ | Argent Data Systems

 

OpenTracker+ | Argent Data Systems

Openwrt/Lede & APRX

Just before years end i have compiled the latest OpenWRT LEDE & APRX, and added OpenVPN and OpenSSL to it.  The files can be found in the download section. If you have another router, then drop me a line, or call me at DMR at 204 / 2044 or 2045.

Latest Openwrt – APRX images – 19-05-2017

I have added new firmware packages and the latest APRX package in the download section. In case you need firmware for another router, please let me know and I see what I can do.

To install just the package, do as follows….
ssh into your machine (normally something like sss root@(ip-of-machine)
Then change into the tmp directory and execute:

/etc/init.d/aprx stop
wget https://www.pa0esh.com/svn/aprx_2.9.0-Stable_brcm47xx.ipk
chmod 755 aprx_2.9.0-Stable_brcm47xx.ipk
opkg install aprx_2.9.0-Stable_brcm47xx.ipk

In case the installer tells you that you have already the latest package, change the command into:
opkg install aprx_2.9.0-Stable_brcm47xx.ipk –force-download

Erik, pa0esh



Firmware request Openwrt & APRX

Please use this form to request a tailor made firmware for Openwrt & APRX, enabling you to setup your own iGate / Digipeater for APRS.

Your Name:*
E-mail:*
Description of router and firmware requested:*
Type the characters you see here:

* Indicates required fields

APRX 2.9.0

The latest firmware images for Openwrt & APRX have been uploaded in januari 2017. See the download section.
Ans see Google groups for more info…. https://groups.google.com/forum/#!forum/aprx-software

To install just the package, do as follows….
ssh into your machine (normally something like sss root@(ip-of-machine)
Then change into the tmp directory and execute:

/etc/init.d/aprx stop
wget https://www.pa0esh.com/svn/aprx_2.9.0-Stable_brcm47xx.ipk
chmod 755 aprx_2.9.0-Stable_brcm47xx.ipk
opkg install aprx_2.9.0-Stable_brcm47xx.ipk

In case the installer tells you that you have already the latest package, change the command into:
opkg install aprx_2.9.0-Stable_brcm47xx.ipk –force-download

You can test which version you are running:

type aprx -V from the prompt

currently on openwrt the version nummer is not correct but instead will show: 5.05-333-g160eb5d

/etc/init.d/aprx restart

 

Firmware request Openwrt & APRX

Please use this form to request a tailor made firmware for Openwrt & APRX, enabling you to setup your own iGate / Digipeater for APRS.

Your Name:*
E-mail:*
Description of router and firmware requested:*
Type the characters you see here:

* Indicates required fields

OpenWrt & APRX – AUGUST 2016

ASUS-WL500GI have updated and recompiled  the APRX / OPENWRT images and the APRX packages on the 8th of August 2016.  You will find them in the download section.

Currently running attitude adjustment, 15.05 and trunk of Openwrt with aprx at : 2.8.2-16-ge529aaf.

If you need images for another router, please let me know.

 


Your Name:*
E-mail:*
Subject:*
Description of firmware request - type of router.
Type the characters you see here:

* Indicates required fields

 

DX Cluster PA0ESH-3

dxAs of 28 Juli 2016, I have PA0ESH-3 up and running as a dxcluster, using dxspider as software.
The cluster runs on a liteserver housed in Assen The Netherlands with an uptime of more than 99%.
Soon I will also implement a webbed display of the spots here.

you can reach the cluster at www.pa0esh.com and port 7300