Soldr / Tools
ESP32 web IDE: compile and flash ESP32 in the browser
Soldr is a web IDE for the ESP32: the sketch is written for your build, compiled on our server for the ESP32 core, and flashed over USB from Chrome or Edge, with a Serial Monitor in the same tab.
What it does
- Writes ESP32 code for the parts and pins in your build, avoiding the pins that are unsafe at boot.
- Compiles on our server for the ESP32 core.
- Flashes the ESP32 over USB from Chrome or Edge.
- Shows serial output in the same tab.
Flashing
Flashing runs from Chrome or Edge on a desktop or laptop. ESP32 boards, the Arduino Uno, Mega and Nano flash over USB through the browser (a Nano with the new bootloader may need the Arduino IDE). A Raspberry Pi Pico flashes from Chrome or Edge in two presses: the first restarts it into its bootloader, the second writes the file; in other browsers you get one file to drop onto the board. Boards that use a CP2102 or CH340 USB chip may need a one-time USB driver. For any other board, download the sketch and upload it from the Arduino IDE or PlatformIO.
Parts that exist
Every part Soldr picks is one Compoden stocks, shown In Stock with its price. Buy all puts every part in one Compoden cart, shipped across India; COD if checkout offers it for your order.
For example an ESP32 DevKitC and a DHT22.
What Soldr checks before it writes code
- Free, safe pins: no part on a pin the board needs to boot, on an input-only pin, or on a pin already in use. When the board runs out, it says which part has no pin.
- Shared buses: two I2C parts at the same address are told apart (an address pin tied high, for example).
- Logic levels: a 5 V part on a 3.3 V board gets a divider or a level shifter, or a note.
- Power: what every part draws against what the supply and the board's pins can give, including a servo's start-up peak; an adjustable converter comes with the voltage to set it to before you connect it.
- Your own parts: tell it what you already own and the build uses them instead of adding new ones.
The details are in Wiring & pins.
What it costs
Questions are free. Generated code costs credits, priced by the size of what is written, and a compile costs 5 credits. Sign in and get 100 credits free.
Questions
Which ESP32 boards flash from the browser?
Common ESP32 boards, including the DevKit, S3 and C3, flash from Chrome or Edge on a desktop.
Is there a serial monitor?
Yes, in the Firmware tab, next to the code.
Do I need a driver?
Boards with a CP2102 or CH340 USB chip may need a one-time USB driver.
Is it free?
Questions are free; code and compiles cost credits. Sign in and get 100 credits free.