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--- notes:devs:board [2025/02/14 11:11] – created azman
+++ notes:devs:board [2025/08/11 08:06] (current) – [ESP32 DEVKIT] azman
@@ Line 1: / Line 1: @@
+====== Seeed Studio's XIAO ======
+Based on SAMD21 (Cortex-M0)
+//**Note**: Arduino IDE Board Setup (https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json)//
+Pinouts shown below (//Disclaimer: Image copied from some online page.//).
+{{:notes:devs:seeeduino_xiao_samd21_pinout1.jpg?direct&400 |Seeduino XIAO SAMD21 Pinout}}
 ====== ESP32 DEVKIT ======
@@ Line 78: / Line 88: @@
   * select ''Preferences>Additional Board Manager URLs''
-  * enter ''%%https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json.%%''
+  * enter ''%%https://espressif.github.io/arduino-esp32/package_esp32_index.json%%''
   * open ''Boards Manager'' and install esp32 (search for it)
   * when selecting board for upload, select ''DOIT ESP32 DEVKIT V1''
 Note: esp32 flash tool requires python serial module (e.g. ''pip install pyserial'')
+====== ESP01S WiFi Module ======
+Actually has an esp8266 controller (can be a standalone... e.g. NodeMCU). I primarily use this as WiFi module for 8051 systems.
+<file text esp01s_info.txt>
+Upgraded ESP-01S ESP8266 Serial WIFI Wireless Module Wireless Transceiver
+- ESP01S ESP8266-01S (stronger antenna signal compared to esp01)
+- 1MB flash (from 512M)
+- Integrated WEP, TKIP, AES, and WAPI engines. 802.11 b/g/n
+- Wake up and transmit packets in 2ms
+- standby power consumption of 1.0mW (DTIM3)
+Feature:
+- Power down leakage current <10uA
+- Integrated low power 32-bit CPU could be used as application processor
+------
+|ANT.|
+|    |
+|    |
+|8765|
+|1234|
+------
+|tx|
+|ch_pd|1-enable
+|rst|0-reset
+|vcc|3.3v
+|rx|
+|gpio0|0-flash mode (def), 1-uart mode (prog)
+|gpio2|gpio
+|gnd|
+</file>