Digital dashboard with TM1638 and Arduino Nano v3

[EstebanR]

If you don't see a com port installed, that means they have been using counterfeit FT232RL chip on the Nano... It happened to me before. I had to return it to them.

If you still see the com port but the programming is failing, you might need to reprogram the arduino bootloader on your arduino nano, as what it happens is they ship it with wrong fuses... Google about it and how it can be fixed.

Thanks
Thanos

I pluged into my pc but nothing happends i got the message that usb device is not recogniced, i cant see any comport assigned to it, so if mine has ft232rl chip cant be used for this project? because i ordered exact the same nano v3 of the forum projects, if i have to buy a new one how i can be sure to get the right one? thanks

[tronicgr]

Try to feed external 5volts to the 5V pin of the nano before you plug it in the PC USB port... I found that sometimes the regulator on these cheap boards is not feeding proper voltage to the FTDI chip...

[EstebanR]

Try to feed external 5volts to the 5V pin of the nano before you plug it in the PC USB port... I found that sometimes the regulator on these cheap boards is not feeding proper voltage to the FTDI chip...

Thanks Tronicgr it was a faulty USB cable now I can upload the arsuino code and run xsim but the display its no showing the game telemetry I guess its a plugin problem, I'll check it tomorrow.

[lordpirulas]

Hi Guy's ,

A little bit news from my dashboard.I fixed it on a aluminium plate.My goal is to make a aluminium cover and windows for digits and leds.
As Prodigy wrote I had to solder all the wiring behind the board (see photo attached) to achieve my further finishing.

391778268.589540.jpg

391778329.949485.jpg

And finally a video when testing it with the new 6dof xsim plugin.



Edit 4/06:

I just add a picture from the back .You can watch the arduino nano and the decoder for the big digit.

392067303.852289.jpg

hi, sorry for my english
firts congratuatios for your projects , are Amazing!
i would to make one of this with little modifications but i have some question can you help me?

in your project,
- Your nonspecific which is the value of the diodes what is¿
resistors calculation does not match the value that you put(resistors are 220 Ohms ( R= U/I = 8 - 1,5(forward voltage) / 0,020 A))
My idea is to use a smaller 7 segments that only consumes 5v and so we can use the power from arduino
and my questions are:
1 I wil delete circuit 12v regulator and capacitors not?
1 I need to know the value of the resistors and diodes
thanks

[cubizme]

Hi Everybody,

Can I use this module (MAX7219) to replace TM1638 module ? because I can't buy TM1638 in my country !
thank you very much .

[Mattred]

How will the code look like if I am using the Arduino UNO without the digital display I just want to get a speed signal out to another device i am using for work I will be using Euro Truck simulator and basically just need a speed output

[vicpopo]

Hi ,

For me no problem to use max7219 instead tm1638.Just keep the code to get the value you need from obd2 protocol ( speed , rpm , gear ) and adapt the code to display the values choosen on your display.

Just look after the library for the max7219 and adapt the code according number digit format.

[cubizme]

Hi ,

For me no problem to use max7219 instead tm1638.Just keep the code to get the value you need from obd2 protocol ( speed , rpm , gear ) and adapt the code to display the values choosen on your display.

Just look after the library for the max7219 and adapt the code according number digit format.

Big thanks to vicpopo,

I do not know anything about electronics and programming, so can I use this code for this module MAX7291 ? and how the wiring to MAX7291 module ?

Sorry for my bad English .

Thank you !

[vicpopo]

Hi ,

To use the display with max7291 you have to learn a little bit programing or ask around you someone who knows arduino programing.
Sorry but can't take time to do it for you .

The thing I can say is that isn't too difficult to program with big motivation.
Sirnoname made for me the most difficult part of work making the code fir the comunication to get all desired values like speed rpm or gear.

[soraz]

if someone have a shiftregister like 74hc595, i write arduino code (attached) to display number (rpm, gear, speed..) to a 8 x 7segment led with two 74hc595 and write a library (attached) derived from a fast TM1638 library.