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sensor:logic_level_converter [2026/04/11 21:51] – created vamsansensor:logic_level_converter [2026/04/11 22:34] (current) – [Communication topics on lamaPLC] vamsan
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 ====== lamaPLC: Bi-Directional Logic Level Converter 3.3V ↔ 5V ====== ====== lamaPLC: Bi-Directional Logic Level Converter 3.3V ↔ 5V ======
- 
 {{ :sensor:2_ch_signal_conv_1.png?100|Bi-Directional Logic Level Converter 3.3V ↔ 5V}} {{ :sensor:2_ch_signal_conv_1.png?100|Bi-Directional Logic Level Converter 3.3V ↔ 5V}}
-**Technical data**+The Two-Channel 5V to 3.3V Bi-Directional Logic Level Converter is a compact module designed to safely bridge communication between devices operating at different voltage levels, such as an Arduino Uno (5V) and a Raspberry Pi or 3.3V sensor.  
 + 
 +**Key Features** 
 + 
 +  * **Bi-Directional Communication:** Automatically converts signals from 5V to 3.3V and vice versa on the same channel.  
 +  * **Protocol Support:** Optimised for [[com:basic_i2c|I²C]] (IIC) as it manages the bidirectional data line (SDA) without needing manual direction control. It also supports [[com:basic_uart|UART]], [[com:basic_spi|SPI]], and [[com:basic_1wire|1-Wire]] protocols.  
 +  * **Voltage Flexibility:** Although primarily used for 5V and 3.3V, many modules are compatible with 1.8V and 2.8V systems.  
 +  * **Compact Design:** Usually measures about 16mm x 13mm and is suitable for breadboard use.
  
 {{page>:tarhal}} {{page>:tarhal}}
-|< 100%>| 
-|{{ :sensor:cjmcu-164_2.png?400 |}}|{{ :sensor:cjmcu-164_3.png?400 |}}| 
-===== Wiring ===== 
  
 +**Typical Pinout and Wiring**
  
 +The module is divided into a High Voltage (HV) side and a Low Voltage (LV) side. You must provide power references to both. 
  
-<code c>+{{:sensor:sigconv_1.png?400 |Bi-Directional Logic Level Converter 3.3V ↔ 5V}}
  
-</code>+^Pin Label^Connection| 
 +^HV|5V Power Supply (High Voltage Reference)| 
 +^LV|3.3V Power Supply (Low Voltage Reference)| 
 +^GND|Common Ground (connect to both systems)| 
 +^HV1 / HV2|5V side data lines (e.g., SDA/SCL from Arduino)| 
 +^LV1 / LV2|3.3V side data lines (e.g., SDA/SCL to sensor)|
  
 ===== Communication topics on lamaPLC ===== ===== Communication topics on lamaPLC =====
 {{topic>communication}} {{topic>communication}}
  
-{{tag>BMP280 AHT20 temperature humidity pressure sensor arduino oled SH1106 arduino_code}}+{{tag>Bi-Directional Logic_Level_Converter I2C UART SPI}}
  
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