At worst, you could get away with holding the headers tightly with jumper wires in pin holes during flashing but it is not a foolproof process and flashing might fail. If you're intimidated by soldering there are 3D printed jigs available for different modules and devices. If you're new to soldering check out some soldering tutorial videos while you're at it. To solder you'll of course need a soldering iron, soldering tin and some flux. A PC power supply can be a source for 3.3V DC power.
When using an external 3.3V supply, simply ensure the ground (GND) of both are connected, this ensures a common ground.
The ESP requires at least 150mA, many 3.3V serial programmers do not supply this much current as many serial programming tasks do not require a large amount of power. Many CH340G devices will not work, the "golden CH340G" has a voltage regulator on it to supply enough power to the ESP device - many do not. Some devices, such as NodeMCU, D1 mini or M5Stack products, have an USB upload port and the serial-to-USB adapter built in. You MUST make sure the data (RX and TX) and VCC pins are set for 3.3V. Some adapters can be switched between 3.3V and 5V for the data pins, but still provide 5V on the power pin which will irreparably destroy your device. RaspberryPi - only for advanced users.NodeMCU You can also use a NodeMCU (or similar) as a reliable serial-to-USB adapter if you disable the onboard ESP by bridging GND to the RST or EN pin, and connect TX and RX straight to another ESP82xx instead of crossed.CP2102 or PL2303 - works with certain devices, but using an external 3.3V supply might be necessary.Buy only the variant with a separate 3.3V regulator on PCB! FTDI FT232 - these adapters have a lot of fakes in the market so buy only from reliable sources ( example).RECOMMENDED CH340G is the most reliable and the cheapest one to boot ( 1, 2).You must ensure that the device receives sufficient power (current AND appropriate voltage level) to properly flash the firmware on the device. The power supplied to the device is one of the most important elements for both flashing the device and for stable operation. Getting Started Prerequisites ~ Needed Hardware ~Įvery Espressif ESP8266, ESP8285, ESP32, ESP32-S or ESP32-C3 chipset based device can be flashed with Tasmota. RCWL-0516 microwave radar motion sensor.MLX90640 Far infrared thermal sensor array.MGC3130 3D tracking and gesture controller.Honeywell HIH temperature and humidity sensor.BME680 temperature, humidity, pressure and gas sensor.BME280 temperature, humidity and pressure sensor.AHT1x/AHT2x and compatible temperature and humidity sensor.Smart Home Integrations Smart Home Integrations.Getting Started Getting Started Table of contents.Open your terminal then type the command below. If the NodeMCU still connected to the MAC you need to unplug and plug again while pushing down the FLASH BUTTON for 5 seconds then release. Setup using Git Command to download the ESPTOOLS see below the following commands. Download the NodeMCU firmware via GitHub | Link.Below are the download option that can be used for these guide.
There are two options that can be used on ESP8266 Board, by flashing using NodeMCU or you customize / optimize the feature of your ESP8266 development board.
CH340G Serial Communication Driver for Mac | Zip.CH340 Serial Communication Driver for Mac | Zip.FTDI USB Chip Driver for (Mac) 32Bit | 64Bit.
Installation of USB Serial Communication in Mac Operating System (OSX)ĭownload USB Serial Communication Drivers
Below are the step how to disable the KEXT feature.
Since we need to install a unsigned driver for the USB to Serial Communication that we are going to used in NodeMCU we will have to disable the KEXT validation tool. On this feature the protection system is to disable the installation of non-certified KEXT (Kernel Extension) such as drivers. Apple OSX introduce the system integrity protection that disabled the modification system location of the user privileges. NodeMCU devkit can be flashed with latest firmware using your MAC OS, before you going to start you need to disable the OSX “KEXT SIGNING “ feature.