@felmue SOLVED - thanks for that - CH2 works as expected!

Looks like the upcoming "ENV PRO" is going to have the new BME668 sensor, which is awesome. https://twitter.com/M5Stack/status/1696380881513107502 https://www.bosch-sensortec.com/products/environmental-sensors/gas-sensors/bme688/ Im not sure how much the "first gas sensor with AI" thing is just marketing, but the specs and potential on the sensor are impressive. I hope M5stack supports the full thing (with its AI training capabilities) "The gas sensor can detect Volatile Organic Compounds (VOCs), volatile sulfur compounds (VSCs) and other gases such as carbon monoxide and hydrogen in the part per billion (ppb) range. Additionally to all features of the BME680, the BME688 has a gas scanner function. In standard configuration, the presence of VSCs is being detected as indicator for e.g. bacteria growth. And the gas scanner can be customized with respect to sensitivity, selectivity, data rate and power consumption as well. The BME AI-Studio tool enables customers to train the BME688 gas scanner on their specific application, like in home appliances, IoT products or Smart Home."

Hello @marek-5pi-eu you are welcome. I am happy to hear you got it working. And thank you for letting me know. Thanks Felix

Use cad plane to measure dimensions is 12 mm [image: 1692616005587-snap3.jpg]

Any chance m5stack releases FW code for individual units like this one? I couldnt find any in github. I have a few decades of experience with RFID firmware, writing ISO15693 anti-collision algorithms, etc and could add some enhancements to it for multi-tag, EAC alarms, etc. (My previous username here was in fact ISO15693) Otherwise Im going to need to use non-m5stack rfid HW for my project I think.

Are you saying that the brightness block is just working?

@mtylerjr Please share what you find out.

@pandian-nano Thank you. I have read through that several times and it makes no more sense than the time before. I'll eventually come across something that I understand and it will sink in. Thanks again.

@ameero95 managed to get a downlink message on Chirpstack with my private gateway but still no good result from TTN.

If you let the kids watch you disassemble and check the impellers you might inspire a future HW engineer instead of a future SW engineer. So be careful and dont do that :)

@mrburns42, I can't help with the datasheet, I too failed to locate it. But what I did manage to find is a library for a similar sensor, which allowed me to use the M5Stack ultrasonic sensor on I2C connected to a Micro:bit (with 5V carrier board and 3v3 to SCL and SDA). If you have look at the repo below there is a little more info on the address, byte size and data type and more, see SR04_I2C.ts file, which worked for me. Sensor details: https://www.sgbotic.com/index.php?dispatch=products.view&product_id=3028#:~:text=Instead of the common GPIO,easy method of distance measurement. Associated Git repo: https://github.com/SGBotic/pxt-SGBotic-SR04-I2C

Lol, it was being worked on as you thought of it (previews on Twitter) alas it came in too late for me to order

#include <HardwareSerial.h> HardwareSerial Comm(1); Comm.begin(115200, SERIAL_8N1,TX_pin,RX_pin); // TX RX Comm.print("AT+IPR=115200\r"); // Set text mode Last command should return an OK. If not, it could be that you have mixed up TX and RX pins or a power issue. To read the reply from the module you could use something like this : while (millis()<wait_until) { while (Comm.available()) { ccc=Comm.read(); //Serial.print(ccc); if (k<buffer_size-1) { Receive_buffer[k]=ccc; k++; } } Receive_buffer[k]=NULL; if (strstr(Receive_buffer,StopCharArray)!=NULL) { //Serial.println("OK found"); // SIM7600_Error=0; Receive_buffer[k]=NULL; return false; } }

Have you updated your firmware to the latest version as I just ran a test and have no error here.