Hi All, I posted earlier about problems with SoftwareSerial on a Wemos D1 mini board not communicating intermittently or not at all. From research it appears that it is a known problem and is something to do with interrupt conflict with the wifi channel. There is an alternative library (attached). here are the facts: display: 1.77" TFT SPI Display. 128 x 160 pixels. SPI. TFT. ST7735S. i downlaoded and isntalled the adafruit GFX and ST7735 library. using the following pins i managed to get the display running fine on my arduino uno: UNO - Display. I have tried a D1 Mini and a NodeMCU and can't get either of them to connect to my Wifi. The D1 was part of another (working) project and i grabbed it for this thinking i was doing something wrong with the Node. No matter what I do, I can't seem to get them connecting to my Wifi. I'm using the built in examples from the ESP8266 board library WeMos D1mini ArduinoIDE →. Diagram and pinout for version v1.0.0 Pin Pin Function ESP-8266 Pin TX TXD TXD RX RXD RXD A0 Analog input, max 3.3V input A0 D0 IO GPIO16 D1 IO, SCL GPIO5 D2 IO, SDA GPIO4 D3 IO,10k Pull-up GPIO0 D4 IO, 10k pull-up, BUILTIN_LED GPIO2 D5 IO, SCK GPIO14 D6 IO, MISO GPIO12 D7 IO, pinout. WeMos D1 Mini: Video dell’assemblaggio. You can find WeMos D1 mini on WeMos D1 mini - NodeMCU V2 V2.1 V3 - esp01 - esp01 programmer. You can find 3v realay on wifissd, wifikey, wificonnect. (Each line should be followed by pressing Enter. Don't worry if the log output crashes through your input, the ESP doesn't read that output as input.) After that you should be able to connect to the UI, the log should show the IP address for the unit during the Aircoookie/WLED. Control WS2812B and many more types of digital RGB LEDs with an ESP8266 or ESP32 over WiFi! - Aircoookie/WLED. on the D1 mini. and yes to the power supply. 1 Like. Stephenn (Stephen N) March 6, 2021, 2:36pm 3. I used this video to install Hyperion and LEDs behind home projector screen. Towards the end of video, Dr ZZs shows how Check out E. Hayes review of a ESP32 Mini. It appears that they too have a weak voltage regulator. Some suggest to replace the voltage regulator or remove it and supply 3.3V externally. Hard to do with special soldering tools. The genuine Wemos D1 Mini has a 500 mA voltage regulator and can be purchased here. At random times the Wemos reboots. Whether this is a problem for you depends on what you are using the Wemos to do. Anyway, I think I may have found the cause and offer this solution. I've been doing experiments on 'deepsleep' with a set of Wemos D1 Mini devices and encountered the problem with random reboots. Im having a simular problem. My D1 Mini also does not boot when data is connected to D4. It works find when disconnection D4 and then reconnecting once its booted. I have no resistors or level shifters in my circuit at all. I suspect it has to do with the D4 being pulled low on boot which is supposed to be high ( reference). G3DvO.