Wemos LOLIN32 Lite simulator, an ESP32 with a battery socket
The LOLIN32 Lite is a classic ESP32, of which one Xtensa LX6 core runs here, on a narrow board with a LiPo charger: twenty-six pins named by GPIO, 0.9 inch between the rows. Its blue LED on GPIO 22 lights when the pin is LOW, and WiFi joins a simulated network.
- 6peripheral areas modeled
- 1project ready to run
- Real timeon your own machine
What is modeled
Taken from the board's own contract document and put in plain words, with what is missing beside it.
Modeled
- Core
- One Xtensa LX6 core, the DevKit V1 model whole
- GPIO
- The twenty-six header pins, numbered as the silkscreen numbers them
- ADC1
- VP, VN and 32 to 35
- The blue LED
- GPIO 22, lit when the pin is LOW, as LED_BUILTIN
- Serial
- The USB chip, wired to the serial monitor
- WiFi, simulated
- WiFi.h over a network written in software: no radio, no 802.11, and real internet only when you sign in and switch it on
Not modeled
- The battery charger and a battery: BAT+ is left open.
- The second core, ADC2, the DAC and touch sensing.
- TX and RX pins: the board does not bring them out.
Open one and press Run
Each of these opens in the editor exactly as it is drawn here.
Every built-in project on the LOLIN32 Lite
Each has its own page with the circuit running, the code and a parts list.
Questions
Is it free?
Yes. Every board and every part is on the free plan, with no account needed.
Why does the LED go out on HIGH?
It is wired from 3.3 V to GPIO 22, so it lights when the pin is LOW. digitalWrite(LED_BUILTIN, LOW) turns it on.
Where are SDA and SCL?
Arduino’s LOLIN32 Lite board puts them on 19 and 23, and Wire.begin() here does the same.
Is there a 5 V pin?
No. The board has 3V and the battery socket, and nothing at 5 V on its headers.
The other boards
Every one of these runs today, and every one is free.
A RISC-V chip at 160 MHz, on the real memory map.
The classic Arduino, with an ATmega328P running at 16 MHz.
The Uno’s chip on a small board that fits a breadboard.
The big Arduino, with 54 digital pins and four serial ports.
An Uno-shaped board whose chip does its own USB serial.
A second RISC-V board, with 31 pins and simulated WiFi.
The classic ESP32 at 240 MHz, with simulated WiFi.
The ESP32-S3 at 240 MHz, with USB serial and an RGB LED.
Try it on your own firmware
What you build here runs on the board on your desk, unchanged. Nothing to install and no account needed.