Most recent activity
-
It showing up for me now in the search function as well, thanks for checking!
-
I want to do that, but need to find the time to separate out the LoRa code into its own module. I also wrote a CayenneLPP encoder that I'd like to contribute as well, but again need to find the time to actually put it into a module.
I contributed a module for the MAX1704x Battery Fuel Gauge a while ago, but I'm not seeing it when I use the search function on the Espruino website?
-
I originally used the RN2483 module, but when that became unobtainium I switched to the LoRa-E5 (now called Wio-E5) module from Seeed. It has a STM32WL SoC, which contains both an ARM Cortex M4 and a SX126x LoRa radio. The ARM Cortex M4 runs the LoRaWAN stack, and uses an AT command set.
Thanks, I've now updated the link!
-
Hi all,
I've been working on an open-source outdoor air quality monitor using Espruino for a while now, and it's finally at a stage where I feel comfortable sharing it with you folks! The first batch of ten prototypes used MDBT42Q modules I bought from Gordon, but I found them really hard to solder (even when using a hotplate), so I've since switched to using the E73-2G4M04S1B, which is a bit larger.
Details about the project and build instructions is over on https://www.hackster.io/gerrit-niezen/openairmonitor-494b2c
If you'd like to know more about the story behind the project, have a look at my blog: https://gerritniezen.com/designing-an-open-source-air-quality-monitor-and-building-a-community-sensor
Please let me know if there's anything else you'd like to know, and if you'd like to be a beta tester.
Cheers,
Gerrit -
OK, I think I figured it out. I'm using pins D9 & D10 to talk to a I2C device, and according to this thread I needed to disable NFC first. Now it appears to work just fine, and I can even retrieve values from the I2C device (an SHT40 temperature/humidity sensor for which I wrote an Espruino library)
I would still like to know what the best way is to solder these modules? My steps are as follows:
- Tape the module to the PCB
- Add lots of flux
- Put some solder on soldering iron and drag it across the pins
- Continue doing this until it looks like all connections have been made
- Use solder wick to clean up any bridges
- Clean up the flux with some IPA
I skipped step 6 last night and this morning my second board stopped working. After cleaning the board it works again, which made me realise that my water-soluble flux is not no-clean flux and should be cleaned.
- Tape the module to the PCB
-
If I reset the module (pressing button for 5 seconds on startup) I can connect to the board again, but trying to upload a program to RAM or flash causes the same issue again.
-
Hi there!
I bought 10 pre-flashed MDBT42Q modules to solder onto my own boards that I designed. I've hand-soldered two of them, but can't connect to them reliably over BLE. I can only see the first board's module every now and again when I scan for it from the Espruino Web IDE, and it fails to connect to it. I'm suspecting it could be an issue with the soldering - is there a guide somewhere on how to properly hand-solder these modules?
With the second board I can at least see it every time I scan for it (which is why I'm suspecting bad soldering with the first board), but it's still not connecting reliably. Here is the output from the console log:
>>> Connecting... Set Slow Write = true BT> Pre-paired Web Bluetooth device already found >>> Connecting to MDBT42Q 5ebb BT> Device Name: MDBT42Q 5ebb BT> Device ID: uqDPqM8TCHh0fht7a3w0tg== >>> Connected to BLE BT> Connected >>> Configuring BLE... BT> Got service >>> Configuring BLE.... BT> RX characteristic:{} >>> Configuring BLE.... >>> Configuring BLE..... BT> TX characteristic:{} >>> Configuring BLE..... Set Slow Write = false >>> BLE configured. Receiving data... Connected {portName: "MDBT42Q 5ebb"} Got "" No Prompt found, got undefined - issuing Ctrl-C to try and break out Splitting for Ctrl-C, delay 250 Still no prompt - issuing another Ctrl-C Splitting for Ctrl-C, delay 250 >>> Sending... ---> "\u0010print(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n" >>> Sent >>> Receiving... No result found for "process.env" - just got "" >>> [notify_error] Unable to retrieve board information. Connection Error? Device found {"portName":"MDBT42Q 5ebb"} [success] Connected to MDBT42Q 5ebb (No response from board) >>> Connected to MDBT42Q 5ebb (No response from board)Any ideas on how can I debug this further?
@gniezen on github