Hi,You can flash the ESP module using the Arduino IDE using a USB to micro USB cable. Tha USB power cable can be plugged into any phone charger(maybe you already have an old spare one) or USB power bank.
Hi,Since you are only writing TO the MAX7129 and not reading from it, what matters is that it sees your inputs correctly. On the datasheet the minimum input voltage for a high is spec'd at 3.5V. In reality it is probably less than that, and typically in the 1.5V range, but this is not guaranteed. However, for non-critical applications, it should work.You can test what the actual threshold is. Put a potentiometer from +5V to GND with the wiper on the DIN input instead of a connection from the ESP8266 and write to the display. Vary the potentiometer setting to find the voltage that the MAX7129 clocks in as 1s instead of 0s. As long as the threshold is sufficiently below 3.3V (~2.3V or less is good, ~3.0V or higher is marginal), it should work fine.
ESP8266 LED Matrix Clock
Hi,Please let me know what's missing so I can update the step.Thanks!
Glad you like this project! Haven't tried this yet, but you might want to play around with these variables:const unsigned char _24_hour_format = 0;const unsigned char _12_hour_format = 1;
You might want to reach out to the author of the sketch for advice on how to do that.
Thank you !
Thank you, glad you like it !
ESP8266 LED Matrix ClockView Instructable »
Thanks for nice project !
3D Printing With Circuits