Anyone working on a MAX7219 8x8 LED matrix display library?

Discuss development of drivers for external hardware and components, such as LCD screens, sensors, motor drivers, etc.
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mcauser
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Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Post by mcauser » Wed Apr 11, 2018 9:22 pm

Hi Rob,

Try replacing:
d.text=("7219",0,0,1)
With:
d.text("7219",0,0,1)

RobH
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Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Post by RobH » Thu Apr 12, 2018 7:22 am

[duplicate removed]
Last edited by RobH on Thu Apr 12, 2018 12:03 pm, edited 1 time in total.

RobH
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Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Post by RobH » Thu Apr 12, 2018 7:39 am

Sorry for the duplicate posting... overlooked 'next' pages.
@mcauser: Thanks for pointing me to the superfluous equal signs, but removing made no difference... searching further.

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mcauser
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Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Post by mcauser » Thu Apr 12, 2018 9:12 am

I’ll flash the latest version of micropython to my Wemos D1 mini and see if I can replicate the issue.

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Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Post by RobH » Thu Apr 12, 2018 12:29 pm

Just tested the quad 8x8 display on a PyBoard: both text display and scrolling work fine for this combination! :D
Rob.

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Re: Anyone working on a MAX7219 8x8 LED matrix display library?

Post by RobH » Sat Apr 14, 2018 10:04 am

I must have made a mistake (maybe more that one!) with my initial attempts! After migrating the program which worked on the PyBoard to the ESP32 and ESP8266 it works on these platforms too! On the ESP8266 both with hardware and software SPI, on the ESP32 only sw-SPI. I'll try to find out the problem with hw-SPI on the ESP32.

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