Merge pull request #1123 from evildave666/update-lolin-c3-mini-v2_1

Update Lolin C3 Mini page to reflect new targetted hardware version

Author: makermelissa

_board/lolin_c3_mini.md

@@ -28,24 +28,32 @@ A mini Wi-Fi & Bluetooth LE board based on ESP32-C3FH4.
 - 12x Digital IO
 - ADC, I2C, SPI, UART
 - Size: 34.3 mm x 25.4 mm
-- Weight: 2.4g
+- Weight: 2.6g
 - Compatible with LOLIN D1 mini shields
 - Compatible with MicroPython, Arduino and ESP-IDF
 - Default firmware: MicroPython
 
 
-## About WIFI
+## About Board Versions
+
+Circuitpython builds after 8.0.0-beta6 target the v2.1 revision of this board. V1.0 had a design flaw
+in the antenna circuitry which cannot be compensated for in software. V2.1 replaces the PCB trace antenna
+with a small ceramic antenna and the status LED on GPIO7 is replaced by a WS2812B RGB addressable LED.
+
+Using 8.0.0-beta6 or earlier builds on a v2.1 board or post-8.0.0-beta6 builds on a 1.0 board will not result in proper
+status LED operation.
+
+V1.0 boards need set WIFI Tx Power to 8.5dBm in order to use WIFI.
 
-You need set WIFI Tx Power to 8.5dBm to use WIFI.
 `wifi.radio.tx_power = 8.5`
 
 ## Purchase
 
-* [AliExpress](https://www.aliexpress.com/item/1005004005736554.html)
+* [AliExpress](https://www.aliexpress.com/item/1005004740051202.html)
 
 ## Learn More
 
 * [Manufacturer Specifications](https://www.wemos.cc/en/latest/c3/c3_mini.html)
 * [ESP32-C3 Datasheet](https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf)
-* [Schematic](https://www.wemos.cc/en/latest/_static/files/sch_c3_mini_v1.0.0.pdf)
+* [Schematic](https://www.wemos.cc/en/latest/_static/files/sch_c3_mini_v2.1.0.pdf)
 * [Dimension](https://www.wemos.cc/en/latest/_static/files/dim_c3_mini_v1.0.0.pdf)