@amartinez for server node it is not good to have while not wlan.isconnected(): time.sleep_ms(50) You do not connect wifi here only you start Access Point (AP) - look if it start on network list scan on client node side or your PC

@robert-hh said in Update LoPy firmware using Pysense as expansion board: So better never supply the board by the 3.3V Pin. That's an output, not an input. Use the Vin Pin for supply. @daniel: Please remove note, that the device can be supplied through the 3.3V pin. Even if that may work under certain conditions, the risk is too high that devices will be broken. I see that we disscuss this 6 months ago ;-) https://forum.pycom.io/topic/316/wipy-pin-3v3-not-work But conclusion was different. Now when we have schematic i do not see there any diode or something like LTC4357 And schematic(and description) for LM3281 does not bring light if there is some protection - especially that there is comparator output

Hi...i am a new user here. As per my knowledge Pin states can be remembered through deepsleep using pin.hold([hold]). Also you can do this in boot it start same as removing power ,you start from clear point. pcb assembly

you can find the code that is working right now for TTN US here on my GitHub I also made a guide on my blog

@livius FW of the SD card should prevent corruption of file system of the card if power fail happens during writing. How this is achieved I don't know.

@Xykon Hi, how could I make sure I am using an unique MAC?, thanks

@BetterAuto You had to be within the first 100 to sign up when the beta was first announced many months ago. I signed up the first day it was announced but still have no confirmation that I am in the beta program.

You don't need ulp for pin wakeup. You can do much less than 150ua if you sleep inside ulp program.

@livius said in Firmware update, Connected to Lopy but update fails: @Camot look here https://forum.pycom.io/topic/763/firmware-upgrade-troubleshooting-checklist-procedure/19 i will recommend you to press reset button just before upgrade and unselect "fast connection" in firmwere upgrade software I have already tried it. Pressing Reset does not change anything. The result and log is the same. The speed 115200 as shown above is with "Fast Connection" unchecked. With "Fast Connection" it uses 921600 :/

@stef , sensor type Pycon should be avail:

Finally I could get the node to join TTN! :D I needed to add a delay of 5 seconds before the node starts listening for the response of the Join Request with the command AT+JD: > AT+JD=5 OK > AT+JOIN Successfully joined network OK Also the fix for _send_down_link in my last post is no more needed as the frequency in the Event Data is now ok.

@kingj first change your init to only one line - i do not suppose that this matter but... i2c = I2C(0, I2C.MASTER, baudrate=100000) and try to add first default config i2c.writeto_mem(addr,0x00,bytes([0x00]))

Is there a fix to this? Im running the latest 1.18.2.r2 and im having this exact issue only the write_readinto() work around doesnt seem to work.

My lopy4 arrived and i tested with it, too, although i was pretty sure it wouldn't make a difference. It didn't, it does the same thing. I left my lopy running since yesterday noon and from 270 readings, 223 were correct. So that's around 17-18% loss.

@PiAir Thanks.

Great Pierre, thank you. I've added the MySQL support, see the pull request.

@MrMarty77 Only ADC1 is supported at the moment, the core ESP32 SDK doesn't support it yet, it may take a while: https://github.com/espressif/esp-idf/pull/466 Fyi, we're a bit hesitant to make ADC2 available because it is also used for pretty important control loops inside the WiFi (and maybe BT, I don't remember) drivers. We want to make sure there's no chance of these and the user ADC calls to interfere with each other.