Electronics | Amateur radio | Nerdy Stuff
VK Logger Ham Radio Discussion Forum was established in 2006, and ran continuously until 2016.
Operation was suspended in 2016 due to a lack of activity, but “re-booted” in 2018.
It ceased operation in 2021 when it became obvious that it was no longer worthwhile to maintain.… Read more...
VK4GHZ 7.0″ Nextion firmware for the K3NG Rotator Controller receives an update dated 2022-05-03.
This is a typo fix only on the about page for the 7.0″ version only.
Thank you to David, 4X1DG for noticing and mentioning it on the Radio Artisan GroupIO.… Read more...
Adam noticed that his G-5500 was moving Clock-Wise every time the system was powering on. If the rotor were installed up on the tower, this would not have been so obvious, except that the rotor is still here in the shack.… Read more...
This low-cost device allows you to set the default start-up voltage of an Eltek Flatpack2 Rectifier.
Compatible with 24V and 48V rectifiers.
Connect your own PC or laptop to Volts Setter, and connect Volts Setter to your own FP2 interface board.… Read more...
This v2.4 firmware update deletes support for years 2020 and 2021 (obviously no longer required!), which now creates space in the PICAXE28X2’s limited memory for date support to end of 2035.
Background:
Thunderbolt does not translate date fields correctly since the roll over from July 29 to 00:00:00 July 30, 2017. … Read more...
VK4GHZ Nextion firmware for the K3NG Rotator Controller receives an update dated 2021-10-23.
This update works in conjunction with Anthony Good’s, K3NG, latest release of rotator controller Arduino code, version 2021.10.19.04.
What’s New?
… Read more...V2021-10-23 New: 3.2" 3.5" 5.0" 7.0" Start up behaviour.
How long does it take a Nextion / TJC HMI to power up, and be ready to receive data from your MCU?
If you’re relying on delays at the MCU side before talking to the HMI, this start up delay is important to get right, but best practice is to use proper two-way handshaking to let the MCU know when the HMI is actually ready.… Read more...
Update 16-08-2021: VK6RPN added
VK Master Reference Code plug for Anytone AT-D878UVIIPlus v2.02 hand held radio.
Features
• Mode 0 (zero)
• All current VK DMR repeaters
• Channels – All Digital repeater channels have callsign & TS & TG in name
• Channels – All Analogue repeater channels have Callsign & frequency in name
• Channels – No personal hotspot channel clutter
• Zones for all DMR repeater channels (comprising 25 TG channels for each repeater)
• Zones, state and band based, for all analogue repeaters. … Read more...
Adam’s Yaesu G-5500 stopped working 🙁
Meter lamps came on, but non responsive otherwise.
An open circuit diode was found, D3, so no 0V GND rail existed.
Easy to find using an ordinary DMM.
A better method of eliminating the voltage drop problem across R10 20 ohm 5W resistor (that feeds +12V to the External Control connector) was suggested by Mike, WB8CXO, and implemented. … Read more...
Update 03-May-2022: V2022-05-03 fixes typo error on About page in 7.0″ version
Nextion for K3NG Rotator Controller features:
Available for:
• NX8048K070 7.0″ Enhanced HMI
• NX8048K050 5.0″ Enhanced HMI
• NX4832K035 3.5″ Enhanced HMI
• NX4024K032 3.2″ Enhanced HMI (limited functionality)
• Numeric Azimuth and elevation display
• Gauges Azimuth and elevation display
• BIG gauges display
• CCW/CW/Up/Down rotator control
• Configurable preset positions with name tags
• Configurable colours/fonts
• Park button
• Go To grid square
• Co-ordinates converter – convert between lat/lon and grid square
• Contest page – 8 presets
• Configuration – Screen page
• Rotor Calibration page
• Numeric keypad for entering numbers
• ABC keyboard for entering text & numbers
• Diagnostics page
• Configurable User Defined Functions with names
• Moon & Sun tracking page
• Satellite tracking page
• Satellite selection list
• Satellite AOS page
• Satellite tracking world map
• Tracking Check Interval settings page
Click on images to view full-size
Which Nextion?… Read more...
This update introduces a new page for a large Azimuth only gauge.
Two alternate Azimuth gauge backgrounds can accommodate both close-in terrestrial VHF/UHF work or world-wide HF operation.
Change log:
V2021-06-29 Note: * This update will reset your existing Nextion settings stored in EEPROM Make a note of any preset Az & name tags, UDF name tags, and config settings before updating.… Read more...
Adam walks you through how to fix ‘Crazy Mouse’ syndrome.
This is when your PC misinterprets serial NMEA GPS data as mouse data by the serial port enumerator, resulting in erratic mouse cursor activity.
Behringer X1222USB audio mixer Power Supply fails, again!
The SMPS modules fitted to these Behringer audio mixers are crap!
Fault symptoms include the appearance of no power to the mixer, except for the +48V LED being faintly lit when phantom power is turned on.… Read more...
A new batch of Eltek Flatpack2 controllers are in stock.
This controller will work with 24 V and 48 V Flatpack2 rectifiers.
New to this batch, and of interest to USA customers, is the ability to select Fahrenheit for the temperature readings.… Read more...
In the next VK4GHZ Nextion for K3NG Rotator Controller NX4832K035 release (V2021-05-21) I’ll include the ability to toggle between the standard Big Az Gauge and your own custom gauge background.
This was inspired by the great idea of Andrej, S56VLV.
Switching to a custom azimuth background image is achieved with a long touch at the center of the Big Az Gauge.… Read more...
Eltek FLATPACK2 Volts Setter
$60.00 AUD
Eltek FLATPACK2 24/48V Touchscreen Controller Kit
$145.00 AUD
Genuine OEM Belt Clip for Anytone AT-D878UV & AT-D868UV - 3 Pack
$21.00 AUD
K3NG Universal Rotator Controller Kit
$109.00 AUD
K3NG Universal Remote i2c Starter Kit
$20.00 AUD
YK04 Remote Control Kit
$30.00 AUD
… 
