![]() ![]() 1 connectors which are mounted on the module currently being sold. Make sure to connect them correctly otherwise you can damage the chip and possibly the Raspberry Pi itself as the sensor is powered by +3.3V taken directly from Raspberry board. Arduino-nano-rp2040-tht.fzpz (31.4 KB) Arduino-nano-rp2040-smd.fzpz (31.3 KB) the difference is that in the SMD part pcb has pads for soldering to the pads on the module and you can put them on both sides of the board. GND, V+ and Vout are in different location. ![]() Pay attention that these 2 packages have different pinout. The Relay module in your picture is what so called Relay shield specific designed for directly interfacing with micro controller such as Raspberry Pi or Arduino, the board already consists of the protection diode and switching transistor and active/disabled LED indicator. I’ve used LM35DT version in TO-220 package, however most commonly used is a TO-92 variant of LM35 sensor. So a simple normalization for 0-100 C range can be done by dividing the sensor voltage by 10mv. The sensor is outputting 10mv for each 1 Celsius. Schematic diagram is shown next.įor Arduino based design click here. So now we just need to connect the LM35 sensor to one of ADC inputs and adjusts the output format and we have a working thermometer in Celsius. Fortunately in my previous project I’ve shown how to build a basic Raspberry Pi voltmeter with ADS1015 chip. Using LM35 temperature sensor with Raspberry Pi is a relatively simple task once you have a way to read and convert analog signals. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |