Hi there. I have a project in mind, but I'm not sure if it is possible and which components should I use to build it. In a motorbike, I would like to install a screen to show at least speed, rpm and distance. I think a 5" would be ok. An smaller one will show the data too small I guess. Another option would be to use more than one display with SPI or I2C with differents addresses (but I would like to avoid this one if it possible).
I found a display led that has 40 pins. Looks like that one is a good fit for arduino mega, not for a nano or uno.
The complete project will be installed in a motorbike. The arduino will gather information from different sensors and those values will be showed in the display.
Another option I found are the nextion displays that can be connected to an arduino uno or nano where I can send data through serial communication.
Hope with this details I was clear enough.
Thanks in advance
I have built something like this for my motorbike.
For speed and distance I use GPS (Neo 6) which seems to be accurate and more accurate that the mechanical speedo on the bike.
The thing I learned is that viewing contrast is important. OLED and LED are good for that. But you might think to incorporate a cowel to shade some of the sunlight. I haven't tried mono LCD but I would imagine that contrast might be a challenge and they are slower to respond. A colour TFT might be OK depending on the colours you display.
For another bike project, I used a simple serial 7-segment LED display which actually works very well, and so is worth considering (although less fancy than a screen).
You will need a solid way of converting to 5V or 3.3V. I use a switching step-down converter. Beware, the electrical environment is very "noisy".
I haven't tried to sense RPM. My bike is older with a cable RPM drive, so tapping that is not easy.
So I would be interested in how you are sensing RPM?
Hope this helps.
You can make a very bright, high contrast display with high efficiency 7 segment LED displays and appropriate filters in front of them. I use photographic filter material that I buy in sheets (Lee filters). Often a combination of a filter of the same colour as the LED, and also a neutral density "dark" filter do the trick. It's important in sunlight and other bright light because the non-illuminated segments are otherwise visible and impact readability.
The display modules I use, all have IC's that have brightness control in software. So I can (and do) vary the brightness according to time of day (you can measure ambient light too, like phones do).
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.