Andrea

Most recent activity

• Xiaomi sensors/appliances

  in Interfacing • 3 weeks, 6 days

  

  Hi, with the custom firmware everything works perfectly!

  After flashing, following these directions: https://github.com/pvvx/ATC_MiThermomete­r

  @Vlad's code fetches values without problems:

  var temp = null;
      var humidity = null;
      var battery = null;
      function getSensorData() {
          NRF.findDevices(function(devices) {
                  if (devices[0] && devices[0].serviceData.fe95) {
                      var data = devices[0].serviceData.fe95;
                      // console.log(data);
                      var flag = data[11];
                      // console.log(flag);
                      
                      switch (flag) {
                          case 4: {
                              // temp
                              temp = (data[14] | data[15] << 8) / 10;
                              break;
                          }
                          case 6: {
                              // humidity
                              humidity = (data[14] | data[15] << 8) / 10;
                              break;
                          }
                          case 10: {
                              // battery
                              battery = devices[0].serviceData.fe95[14];
                              break;
                          }
                          case 13: {
                              // temp and humidity
                              temp = (data[14] | data[15] << 8) / 10;
                              humidity = (data[16] | data[17] << 8) / 10;
                              break;
                          }
                          default : {
                              print("Unknown flag: " + flag);
                          }
                      }
                  }
                  for (var i = 0; i < devices.length; i++) {
                      devices[i] = null;
                  }
                  devices = null;
              }, {
                  filters: [
                      {serviceData:{"fe95":{}}}
                  ],
                  timeout: 2000
              }
          );
      }
      setInterval(function () {
          print("Temp: " + temp + " humidity: " + humidity + " battery: " + battery);
          getSensorData();
      }, 5000);
  

  THANK YOU ALL!

• Xiaomi sensors/appliances

  in Interfacing • 4 weeks

  

  Hi @fanoush, you are right, in the next few days I will hack one :-)

  See you soon!

• Xiaomi sensors/appliances

  in Interfacing • 4 weeks, 1 day

  

  Hi @fanoush, thanks for the link, I initially saw something about: https://github.com/atc1441/ATC_MiThermom­eter

  Then I saw that through Python, without any hacks, you can get the values easily.

  Maybe later, I sacrifice one in the name of science :-)

• Xiaomi sensors/appliances

  in Interfacing • 4 weeks, 1 day

  

  Hi @Gordon, I uploaded this code to Pixl.js (2v08)

  var deviceInfo = {};
  
  function parseDevice(device) {
    var d = new DataView(device.serviceData["fe95"]);
    var frame = d.getUint16(0, true);
    var offset = 5;
  
    console.log("FRAME: " + frame);
  
    if (frame&16) offset+=6; // mac address
    if (frame&32) offset+=1; // capabilitities
    if (frame&64) { // event
      var l = d.getUint8(offset+2);
      var code = d.getUint16(offset,true);
      if (!deviceInfo[device.id]) deviceInfo[device.id]={id:device.id};
      event = deviceInfo[device.id];
      switch (code) {
        case 0x1004: event.temperature = d.getInt16(offset+3,true)/10; break;
        case 0x1006: event.humidity = d.getInt16(offset+3)/10; break;
        case 0x100D:
          event.temperature = d.getInt16(offset+3,true)/10;
          event.humidity = d.getInt16(offset+5)/10; break;
        case 0x1008: event.moisture = d.getUint8(offset+3); break;
        case 0x1009: event.fertility = d.getUint16(offset+3,true)/10; break;
        // case 0x1007: break; // 3 bytes? got 84,0,0 or 68,0,0
        default: event.code = code;
          event.raw = new Uint8Array(d.buffer, offset+3, l);
          break;
      }
      print(event);
    }
  
  };
  
  setInterval(function () {
      NRF.setScan(parseDevice, { filters: [{serviceData:{"fe95":{}}}], timeout: 2000 });
  }, 5000);
  

  It always prints FRAME, and when the temperature or humidity changes it prints the event:

  FRAME: 22616
  {
    "id": "a5:c2:83:xx:xx:xx public",
    "code": 50578,
    "raw": new Uint8Array([208, 117, 0, 0, 58, 221, 132, 170, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
   }
  
  FRAME: 22616
  {
    "id": "a5:c2:83:xx:xx:xx public",
    "code": 15670,
    "raw": new Uint8Array([121, 182, 117, 0, 0, 185, 254, 166, 227, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
   }
  

  I have no idea how to extract the temperature and humidity :-)

  Can I get some useful info from this Python code (0x80, 0x7F)?

  https://github.com/adafruit/Adafruit_Cir­cuitPython_BLE_LYWSD03MMC/blob/main/adaf­ruit_ble_lywsd03mmc.py

  THANK YOU

• Xiaomi sensors/appliances

  in Interfacing • 1 month

  

  Hi @Gordon, thanks for the reply.

  As soon as I have time, I try the code on my Pixl.js and tell you!

  See you soon :-)

• Xiaomi sensors/appliances

  in Interfacing • 1 month

  

  Hi @Gordon, hi @Vlad

  I have a Xiaomi LYWSD03MMC Thermometer / Hygrometer and with this CircuitPython library I can fetch its values:

  https://github.com/adafruit/Adafruit_Cir­cuitPython_BLE_LYWSD03MMC/blob/main/adaf­ruit_ble_lywsd03mmc.py

  Now I'd like to make everything work on Espruino thanks to your code.

  I changed filters: [{serviceData: {"fe95": {}}}] the device is found (although its serviceData should be "ebe0ccb0") but all values remain null.

  How do you think it could be solved?

  THANK YOU

• Micro:bit does not mount flash and no RESET button

  @Andrea started

  • 9 comments
  • 1,246 views

  @Gordon replied
• Micro:bit does not mount flash and no RESET button

  in Other Boards • 8 months

  

  OK, thanks anyway ... if I solve, I'll write you how I did!

  :-)

• Micro:bit does not mount flash and no RESET button

  in Other Boards • 8 months

  

  Hi Gordon!

  Programming via Bluetooth is OK, but via USB it is only powered, it is not recognized and the "MICROBIT" drive is not mounted ... I don't know how to update to 2.06

  I've tried both on Mac and Windows (with related drivers) and with different USB cables.

  THANK YOU SO MUCH

• Micro:bit does not mount flash and no RESET button

  in Other Boards • 8 months, 1 week

  

  Hello. In this situation, exist a way to update / restore to factory defaults via drag n drop, Espruino Web IDE, WebUSB, BLE DFU App, Serial Port Terminal?

  There is a key combination or "jumper-bridge" between pins to activate the bootloader?

  :-(

  THANK YOU