15x7 CharliePlex or 8x16 LED Matrix FeatherWing for RPM & s
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- Motomoto
- Posts: 3
- Joined: Fri Jan 14, 2022 2:14 am
15x7 CharliePlex or 8x16 LED Matrix FeatherWing for RPM & s
I have a question about the Adafruit 15x7 CharliePlex FeatherWing or an Adafruit 8x16 LED Matrix FeatherWing and it's ability to display 2 separate signals using Adafruit Feather 32u4 Basic Proto as a base. What I'm trying to do is display RPM using the top row of either featherwing and also display speed below via numeric characters within the same display. Thanks in advance for any help with this project.
- adafruit_support_bill
- Posts: 88151
- Joined: Sat Feb 07, 2009 10:11 am
Re: 15x7 CharliePlex or 8x16 LED Matrix FeatherWing for RPM
It would be difficult to display 2 rows of characters on these relatively low-resolution displays. The most basic dot-matrix character sets are usually 5x8 pixels, so at most you would only have room for two characters total.
You would probably be better off with one of the LCD or OLED displays.
You would probably be better off with one of the LCD or OLED displays.
- Motomoto
- Posts: 3
- Joined: Fri Jan 14, 2022 2:14 am
Re: 15x7 CharliePlex or 8x16 LED Matrix FeatherWing for RPM
Thank you for your reply!
I should've expanded more on the project idea. The characters would only be displayed for speed in the bottom section of the LED matrix while the rpm would only be displayed linearly and only taking up the first top row. For example 500 rpm would be the first LED on the top row and 10000 rpm would be the last LED on the top row. Any additional recommendations?
Thank you!
I should've expanded more on the project idea. The characters would only be displayed for speed in the bottom section of the LED matrix while the rpm would only be displayed linearly and only taking up the first top row. For example 500 rpm would be the first LED on the top row and 10000 rpm would be the last LED on the top row. Any additional recommendations?
Thank you!
- adafruit_support_bill
- Posts: 88151
- Joined: Sat Feb 07, 2009 10:11 am
Re: 15x7 CharliePlex or 8x16 LED Matrix FeatherWing for RPM
That should be possible to do. The GFX library supports both text and basic graphics. Obviously the 8x16 will give you a little more room than the 15x7. You will probably want to have at least one blank row between your linear bar and your character display.
Please be positive and constructive with your questions and comments.