Inkscape always saves in px, the other units in the gui are translated from px. I do not believe you did anything wrong simply that each time you edit an SVG it gets more transforms and if someone else made the SVG it could have had the wrong PPI so they then scaled it and then you edit it and use the correct PPI but their scaling now makes yours wrong etc. In your case there are no easy to find SMD gul wing 4 pad parts existing so making your own SVG was the only solution. This is the case with most footprints you will be looking for. In that case you open the part you found in the editor, save as a new part and change all the names and labels but leave the SVGs as they are (with the possible exception of the schematic which you may want to change the labels in the SVG). Like recently someone was looking for an Atmega1284 tqfp which is not in Fritzing but if you search for tqfp you will find some other part with a different name. But most parts out there have an equivalent footprint available and in that case you would only be changing labels. # include "FS.h" # include "SD.h" # include "SPI.h" # include "RTClib.h" # include "DHT.For each new part footprint you create not each new pcb you make. If we can not open the file, we write an error message and at the end of the script we wait for 2 seconds.
FRITZING ESP32 SERIAL
To see the string in the serial monitor of the Arduino IDE, we write the same string to the serial USB connection.
If the file is available we write the dataString to the opened text file and close the file. Therefore we open the text file with the open function of the SD library and set the path to the text file and use the argument FILE_WRITE to open the file with writing permission. The next step is to write the complete string to the SD card. Therefore we connect all measurements and separate them with a comma. After we have all values that we want to save to the SD card we create one string that will be one line in the text file that we create on the SD card.
Now the humidity and temperature is read from the DHT sensor and also the current time in unix datetime format from the RTC. The loop function start with the creation of an empty string. In the last line of the setup function we initialize the DHT object.Īfter the setup function the RTC, the DHT sensor and the SD card module are ready to operate. If something failed during the initialization, we get an error message in the serial monitor. The real-time clock is set to the date and time when the sketch is compiled. With the following three if statements we initialize the real-time clock and the SD card module. Now we wait until the serial communication channel is established.
In the setup function we set the baud rate to 9600 that have to match the baud rate of the serial monitor. The Arduino uses pin 10 and the ESP8266 pin D8 for the default SPI chip select connection.īefore we enter the setup function we create an DHT object with the previous defined DHT pin and type. If you use another digital pin for the CS line, remember that you do not connected the pin to other components, because the SD card library will use the default pin. In my case I use the default chip select pins. In the next two lines we define the chip select pin to identify the SD card module on the SPI communication line. If you use the DHT11, you only have to change the type in this line to DHT11. println( "error opening datalog.txt") īecause I use the DHT22 temperature and humidity sensor, I have to define the DHT type as DHT22.
println( "Initialization failed!") įile dataFile = SD. println( "RTC lost power, lets set the time!") # include "SPI.h" # include "SD.h" # include "DHT.h" # include "RTClib.h" # define DHTPIN 7 // used for Arduino //#define DHTPIN D4 // used for ESP8266 # define DHTYPE DHT22 const int chipSelect = 10 // used for Arduino //const int chipSelect = D8 // used for ESP8266