Introducing ‘El Rojo’

Today things just got better, a lot of things seem to work out fine. Just like some amateurs amongst us, I have been dreaming to buy this nice red sportscar, it’s just the damn budget!
That is why we introduce the new high-end housing named ‘El Rojo’. Yes it is red like the famous cars!
So now you want to know what is so special about this? What is so ‘high-end’?
As we have been using a different type of filament provided by ColorFabb, we can now say that this box can handle higher temperatures, and is made of one of the most advanced technologies in materials.
The material NGEN, as it almost says, is the next generation of plastics, invented by a dutch company in cooperation with ColorFabb.

So here it is, shiny and new, technology, passion, combined with force: ‘El Rojo’.el rojo

Notes on using BlueStack via Bluetooth or USB

Lately I got a few returns, and questions regarding issues seen by HAM’s. A good reason to make a nice checklist to help if you do encounter some weird behaviour.

– if your unit has a black dot on the USB-port, you are fine. If you do not have the black dot, the uC on the board has older firmware. The only way to make it work will be disconnecting the wire on the radio-board for ‘dongle’-mode, and reconnecting it for FW-upgrade only.
– Use a good USB-cable, many cables do not work correctly. for example cables of a chrome-cast are not fully wired, and give errors. All units are tested here with a cable of high quality like Samsung cables.

1: Bluetooth needs to be connected first via your phone or tab, and needs password/pin 1234
2: The App disconnects Bluetooth after a few seconds: Update the firmware in the DVMega first!
For BlueStack micro setups use this firmware
For BlueStack 1 setup, use this firmware
3: No communication at all! : Check if the button is OUT.

1: The PC should recognize the board as a serial port.
2: The USB-port is ONE minute in programming mode; MMDVM does work, however USB changes make the the DVMega reset during this time.
3: MMDVM does not work : Update the firmware in the DVMega first!
For BlueStack micro setups use this firmware
For BlueStack 1 setup, use this firmware

Global issues:

1: use a good powersupply or battery, the unit can handle small voltage changes, but not too much.
2: for Bluetooth use, preferably do not connect to a PC-USB. The reason is that USB-changes on the PC can make the DVMega reset in the first minute it is powered.
3: Prevent BlueBox01 to be in direct heat, as the units is printed in PLA, extreme heat can cause the unit to change it’s shape.

Some nice testing on BlueDV for Windows.

Today I did some testing on the 4500 reflector, via the dutch  master  2042. That does not really sound to weird, as I am a Dutch HAM. However today I was able to use this configuration on an internetlink of 100k up, 256k down, in the city of Neiva, Colombia! I had some nice conversations with PD0VOS, and PD3EEF, also Tom, PA2TSL came in the group, and we exchanged some nice info on what we were using. Anyway, I can tell we had flawless communication, on a very weak internet connection, had low BER, and all of that on the same link where Skype could not achieve a reliable connection!!

Compliments to David, PA7LIM, and Guus, PE1PLM, for making such reliable and good software!!!BlueDVMore info on the app:

Hardware for use with this great software can be found on

BlueDV for Windows Beta and future

Hi All again,

As many users of HAM equipment are Windows users, PA7LIM was building a BlueDV for windows. Currently in beta.
Of course if it is released, you want to know if you are compatible, and probably you are! Below find an overview of BlueStack boards, and how to use them with BlueDV!

BlueStack overview 1.2

We Are Back!

Unfortunately our webshop has been down due to some technical issues. As I was out for a few days, I noticed it to late.

Anyway, we’re back again, and our goodies are ready for you!

Check our webshop at :

Let’s keep it clear!

After all nice remarks we have received, we have been doing a lot in the background. PLA boxes are being sold, and are available in a few nice colors.
Since we hear that communication is very clear with BlueSpotDV and BlueStack, it seems a good idea to make a nice clear box.
So here we go, let’s keep it clear!!


PlexiBox01How to Assemble it: Watch now!


Huey, Dewey and Louie

From left to right: Little-RED, BlueStackMicro+ and BlueStack-Micro (Basic)


All fit in the BlueBox01, and use the BlueBox01 included lightguides!

Boards are availlable at:

How about some overview?

table overview

Boards are availlable at:

Introducing Little-RED

Little-RED, also known as MicroProg 1.1 is another unit in the BlueStack-Micro-range.

What is Little-RED?
This unit is the program-adaptor that fits to your pi-radio, and gives you the opportunity to do firmware-update’s, but also MMDVM!

How does it work?
If you connect the USB-port to your PC, it will find a comport. In the first 60 seconds this units is connected it is a programming-adaptor (same like Micro+), after the 60 seconds, the programming-options are disabled, and the unit is now capable of interfacing your pi-radio to MMDVM-host, or G4KLX.

Does it have Bluetooth?
No, this module is basically a PC-interface for PC or Raspberry-pi. For Bluetooth communications, choose either BlueStack-Micro or BlueStack-Micro+.


Buy the boards at:

About BlueStack-Micro+ and MMDVM

Lately I discovered that the board did reset during operation of MMDVM-host. It seems the same line that resets the radio-board for uploading new firmware is toggled sometimes. Several solutions to solve this are available, and one of them I removing the wire after firmware-update. In some cases it could be handy to put a small switch inline with this wire, but still, it is some extra thing to do when a new update of firmware comes out.

While the production of the new pcb’s has gone  to high, I decided to have a small modification in the processor on the BlueStack-Micro+. This does not mean you have a bad board, but it saves connecting/disconnecting the wire after firmware-update. Please note, this processor-update is only useful when the USB

is used as MMDVM-interface, Bluetooth has no issues with this!



The new boards that are sent will have a timer inside, which allows the board to run as firmware-updater for approximately 1 minute. After the time expires, the reset to the radio-board will be disabled.

Buy the boards here: