Wemos Lolin32 Lite
WiFi Station 2024 Model A (WS24a) is released in year 2024. It is implemented with the ESP32 Wemos Lolin32 Lite and its clones (board: lolin32_lite).
The processor is a ESP32-D0WDQ6. It has with 2 rows of 13-pin holes (2 rows of headers are supplied but NOT soldered on).
- Great introduction
https://www.mischianti.org/2021/07/30/esp32-wemos-lolin32-lite-high-resolution-pinout-and-specs/ - Micropython
GitHub - chenull/lolinara: Ini adalah board lolin esp32 yang sudah terinstall micropython punya nara - Great video for hardware geeks
https://www.youtube.com/watch?v=s2JAqwg4udY - Interesting controversy on the charging circuit
https://www.youtube.com/watch?v=a9f9vHjQSfQ
Many other Mesh Stations are available if you want soldered in headers or you do not need the built-in battery charger.
Note MS24a is the cheaper "Lite" version, not the "standard" version:
| Available Pins | Standard version | Lite version (MS24a) |
|---|---|---|
| 3V3 | 2 | 1 |
| 5V | 1 | – |
| GND | 5 | 1 |
| RX/TX | 2 | – |
| GPIO | 21 | 21 |
Schematic
sch_lolin32_lite_v1.0.0.pdf (86.5 KB)
Datasheet
Espressif_Systems_01292021_esp32-1991551.pdf (965.5 KB)
PlatformIO
- Board Name: lolin32_lite
- Documentation: WEMOS LOLIN32 Lite — PlatformIO latest documentation
1. Processor
• ESP32-D0WD chip - Dual Core but No Flash
• Xtensa 32-bit LX6 microprocessor
• Floating Point Unit
• DSP instructions (32-bit multiplier, a 32-bit divider etc.)
• 32 interrupt vectors from about 70 interrupt sources
• JTAG for debugging
Internal Memory
• 448 KB of ROM for booting and core functions
• 520 KB of on-chip SRAM (for data and instructions)
• 8 KB of Fast SRAM in RTC
• 8 KB of Slow SRAM in RTC
• 1 Kbit of eFuse: 256 bits for the system (e.g. MAC address) 768 bits for custom applications
Internal Network
• WiFi 802.11b/g/n
• WiFi 802.11n (20 MHz and 40 MHz)
• WiFi up to 150 Mbps of data rate
• WiFi up to 20.5 dBm of transmitting power
• Bluetooth v4.2 BR/EDR and Bluetooth LE
• Bluetooth Class-1, 2, 3 transmit power with dynamic control up to 24 dB
3. Other Components
Flash
Flash Size: 4MByte (32Mbit)
LED
General Purpose LED can be controlled on GPIO-22
Charging LED
