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Topics - Ncartmell

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Open Panzer Help / No Cannon firing
« on: December 18, 2020, 10:11:33 AM »

Finally got around to fixing my Heng Long Panther, the RX-13 died a few years ago.

So rewired completely for TCB, bought a replacement airsoft with the switch and a Taigen Panzer III sound module.

Finally got most things working, so many settings  ;D.

The cannon however does not work no matter what I try.

Airsoft enabled/disabled etc etc

I know the AUX switches work as both MG leds operate.

Any advice?

I have attached my config file.

As a note the radio is a Graupner/JR MX-12 with a modified R700 receiver.

Additionally when I fire the MG the tank comes an abrupt halt.

Best regards


PS I will eventually get around to finalizing the code for the homebrew Scout.

Scout Dev / Home Build
« on: September 19, 2017, 03:17:22 PM »
I have just received some PCB's for the Scout and OP Sound from china (SEEED). Very good boards, 10 boards @ $4.90 plus $10 shipping, so total cost of $20. That is effectivelly $1 each and the boards have also been electrically tested.

You can also order a solder stencil but I wanted to see the quality of the boards.

The question, can I vary from the BOM.

For instance will non surge 1/10W resistors be ok?

The flash memory is W25Q128FVSG acceptable?

What parts can't be changed?

It also may be of interest that SEEED will manufacture fully populated boards.

I tried to get a price but was unsure if it was complete as there was a warning that all parts were not recognised.

It may be worth pursuing for a production run.

Best Regards


Open Source Sound Dev / Noise Cancelling
« on: July 10, 2017, 12:34:55 PM »

I was talking with my friend about the TCB and adding sound, he was not very enthusiastic as he said the motor/gearbox noise almost drowned out the tank sounds.

I then had a thought, why not add noise cancelling to the sound card.

Since the card has not gone for manufacture yet I thought a modification could be done.

My idea,

Add a micro-phone to the board so this can pick up the motor/gearbox noise.

Put a 180° phase shift on the signal (invert).

Amplify the signal and add it the output.

Programming options,

Enable noise cancelling, level adjustment and output with and without tank noise (gives user ability to adjust cancelling without tank sounds).



TCB Dev / FTI USB Module
« on: February 23, 2017, 02:47:56 PM »

I have just found your site and the project looks very interesting.

Have you frozen your design?

The reason I ask is that I am member of MERG and they design electronics for model
 railways and they made a USB module using an FTI USB interface.

These interfaces are expensive so they removed the FTI USB interface and replaced it with a PIC, the price of the USB module kit then fell dramatically from £20+ to just £9, all down to the price of the FTI USB interface.

If you are interested I can ask if you can use there code/design they are also open source.

Best Regards


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