ESP8266 Community Forum

- Fri Aug 12, 2016 1:34 pm #52796

You're very welcome. Glad to see that everything works well now for you

Now the hard part of controlling 5V relays! I didn't realize that this unit is 3.3V and doesn't have any 5V power outs. So I am wickering a setup and I hope it works.

- Sat Aug 13, 2016 3:35 pm #52869

I didn't realize that this unit is 3.3V and doesn't have any 5V power outs.

The V3 devkit modules from LoLin have a 5V out pin.

https://frightanic.com/
https://nodemcu-build.com/
https://github.com/marcelstoer/nodemcu-pyflasher

- Sat Aug 13, 2016 5:18 pm #52875

The V3 devkit modules from LoLin have a 5V out pin.

Thank you. Yes I finally realized that I had a V3 board when I noticed I had a VV pin. I was sooooo happy. Now I can control my relay with no problem at all!

- Sun Aug 14, 2016 11:02 am #52935 I second this.
Tried to compile latest NodeMCU both from the online builder and locally.
I flashed exactly as told in the docs:

Code: Select allesptool --port /dev/ttyUSB0 write_flash -fm dio -fs 32m 0x00000 ./bin/0x00000.bin 0x10000 ./bin/0x10000.bin


But the end result is the same: garbage on tty, constantly blinking LED.
The firmware fits entirely into ROM: 0x00000.bin - 28416 byte, 0x10000.bin - 448615 byte, 2,1Mb total as ELF-binary.
Modules I tried to build: ADC, Bit, CJSON, CoAP, Crypto, DHT, Encoder, Enduser, File, GPIO, HTTP, I2C, mDNS, MQTT, Net, Node, 1-Wire, PCM, Perf, PWM, Sigma_Delta, SNTP, SPI, Timer, UART, Wi-Fi.
Board: NodeMCU v1 (Manufacturer E0, Product 4016).
So, what's the deal? How do I fix it? And if I can't, what's the latest working build for this board?