Re: How to boost output from NodeMCU
Posted: Wed Jul 31, 2019 6:32 am
LedFreak_UK wrote:lethe wrote:while a useful experiment it still it doesn't actually help with my initial question which boils down to "Why does the arduino run the display yet the nodeMCU doesn't?"
The Arduino board has a 0-5 volt output. The output current capability is also greater. I don't remember the spc put I think it is 30 or 40 mA, but for sure 20mA at the least. The ESP8266 is 0-3 volts and has a 12 mA output rating.
There are simple level shifter that will convert the signal to 5 volts. But they do not increase the current. They also can distort the waveform. You might have better success with the ESP8266 if you used a good line driver.