I use gps info of my cell phone when I take pictures, so that I can find where these pics were taken after a long voyage. I also wish to export these pics to google earth or google map, which can be kml or kmz. https://geosetter.de/en/download-en/ Geo setter is a very powerful one. Some times my phone was not able to add geotag info on the the picture, since it does not have location info at that time(indoor picture or gps was not available). Of course you can edit the pic, but geo sitter provide a better interface, you can pic a location on map and then assign the location to the photo that you selected. much easier than deal with coordinates. I notes the steps as following. After install geosetter, select the folder where you store your images. photos with a blue location dot means these pics contain geotag. select one pic with no blue dot, and go to top menu "map", select "show overview map" a google map will show up with goe location of pictures...
The HALL sensors provide an indication as to where in the electrical revolution the rotor is. You get enough information to run the motor in BLDC mode depending on the HALL signal values. In BLDC mode there are six phases and the hall sensors conspire to make exactly six combinations. When driving the motor in FOC mode, the position of the rotor during an electrical revolution is thought of as a position on a compass: say 0-360 degrees. Now the three hall signals combine to make a 3-bit number 0-7. So now for each possible combination you note the average compass value when that value is output by the hall sensors. So if during 0-60 the combination 001 or "1" shows on the hall sensors, you put the average "30" in the table at position 1. Now 60-120 teh hall sensors show 011, so you put the average 90 in position 3 in the table. Now Benjamin decided to save a few bits by instead of counting the revolution in human-convention-units of a degree (i.e. ...
The story of ESP32 pin are old, Andreas made few videos on it: 2017 esp32 review with first table of pins. 2020 #363 Which ESP32 pins are safe to use? with another table esp32 lora heltec and lilygo pins are so so confusing: https://www.thethingsnetwork.org/forum/t/big-esp32-sx127x-topic-part-3/18436 base on my ttgo lora32, I want to know what are lead out, what are used, and what left for me. I wish to add: GPS, serial button ( or if possible rotary encoder, need 3 GPIO), SD is not necessary. The closest data to my board is this one it's called TTGO lora V2 Check pin used, I used TloraV2.1-1.6 with web flasher, check define on git variants/tlora_v2_1_16/variant.h it seems 35 is used as battery pin 21/22 are IIC SDA/SCL some are not clear, when checkin schematic , beside these questionale pins, it leave me few pins to use, seems fine, What I tested: 1. Add rotary: pin are connected as rotary A on GPIO15, rotary B on GOIP2 and rotary push on GPIO14, But th...
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