Hi, could you provide the SMD component list ( with dimensions) ?
Thanks.

Thanks for this great board.
I made some problems for myself following the screen print. The board matches the circuit diagram with NSS connected to GPIO16. The Detail Description is also clear. I think RST and SEL are labelled incorrectly.

meybe using https://www.banggood.com/Wemos-Lolin-ESP32-OLED-Module-For-Arduino-ESP32-OLED-WiFi-Bluetooth-Dual-ESP-32-ESP-32S-ESP8266-p-1148119.html
esp + oled

what You thing about cc1101
3 band

Hi

In the 1.1 version the pins for the display on the board edge are out of alignment. The png image you have of the board in the repository also reflects this.

Thanks

Tim

• https://www.aliexpress.com/item/2pcs-4km-range-Lora-TM100mW-SX1276-SPI-interface-Sensitivity-139-dBm-433MHz-LoRa1276-rf-long-distance/2015211844.html
• http://www.nicerf.com/product_146_136.html

The order seems a bit weird, 99% of the cheap modules have the pin in the order

GND Vcc SCL SDA

and not

Vcc GND SCL SDA

as on the your PCB

Hi, is there a motive for R1 and R2 (pullup resistors for SDA and SCL)?
I'd like to use Wemos pins D1 and D2 for a SoftwareSerial...
Thanks

Any advice on the type of antenna connector to put on the PCB? I noticed the BOM is missing that info.

I would love to use a SMA or u.fl type antenna, but don't know of a connector that fits that footprint on the PCB.

Hi,

I have been implementing the dio0,dio1,dio2 pin multiplexing in my single channel gateway using your excellent PCB.

When doing the same in regular LoRa node using your code I just wondered why you do not use the lmic_pin list. If dio[0]==dio[1] one would assume that you are multplexing the pins for a ESP8266 which will make the code really simple.

Maarten

PS. Something like

static void hal_io_check() {
uint8_t i;
// If two DIO pins are equal, we assume pin multiplexing
if (lmic_pins.dio[0]==lmic_pins.dio[1])
{
// Check IRQ flags in radio module
if ( radio_has_irq() )
radio_irq_handler(0);
}
//
else {
for (i = 0; i < NUM_DIO; ++i) {
if (lmic_pins.dio[i] == LMIC_UNUSED_PIN)
continue;

    if (dio_states[i] != digitalRead(lmic_pins.dio[i])) {
        dio_states[i] = !dio_states[i];
        if (dio_states[i])
            radio_irq_handler(i);
    }
}

}
}

Hi,

Can you help me to find the button on ebay ? I can't find it. I found this one:
https://www.ebay.com/itm/100pcs-3X6X2-5mm-Tactile-Push-Button-Switch-Tact-Switch-Micro-Switch-2Pin-SMD-S2/261995936109?epid=1046591979&hash=item3d002cb96d:g:RSsAAOSwyQtVxKPd

Hi, a friend had a lot of issues to send LORA frames (not lorawan). The rfm-pcb and the d1 mini are stacked. When he send frames, the usb communication is e. g. corrupted.

After a lot of try&error he recognized, that a reduction of the transmission power fix this issue.
Or using 15cm jumper wire also works.

Do you also observed this issues or have any advice for us.

Thx.

Klaus

I am running a LMIC implementation using this shield. This works fine, but the choice of using GPIO16 for SS breaks the possibility to use the timed deep sleep feature of the ESP8266. In order to make timed deep sleep work you have to connect GPIO16 to the ESP's RST pin. When using this shield, the board won't start up properly when connecting GPIO16 to RST. Maybe, in the next version, the GPIO16 pin can be used for an optional feature so there will be a way to use timed deep sleep.
Especially for battery powered LoraWan nodes a lot of power can be preserved by using deep sleep.

Hello,
Your BOM (at https://octopart.com/bom-tool/MsqCYjTr) is missing the 3 diodes

Hi, i have an issue, the gateway works perfectly fine but i have a small problem, i have the gpio15 pulled down to ground with a 10k resistor, but if i connect the 1n4148 diode for dio0 on gpio15 the esp12e will not boot. If i leave the diode disconnected, power up the board and only then connect the diode on gpio15 it works like a charm, any idea about the reason ?

Thanks a lot

Hi ,
I recently ordered the board from pcbs.io but so far haven't been able to get it working.
Tried it with your LMIC fork version both with and with out the diodes.
Has any one been able to successfully run it with 1.1 version boards.
Wemos keeps crashing right after serial.begin.
Also with the sheild attached I cant upload updated skeptch any more from arduino IDE, works ok if I take out the shield.

Thanks

The placement of the center pin seems unusual.
Where can I find the right SMA connector?

As in title, the design and assembled dev pictures are different, could you tel me why, and if i want to connect the RFM95 module i should use 3 diodes as i understand, according to the schematics.

Hi, I have tried several times to order your board from PCBs.io - but it looks like they have issues there. Are your boards available somewhere else?

I cannot find 24AA02E64 for buy, can i replace it?

Please add a list of components needed to populate this board. I was unaware that I needed 3 diodes to get it in a usable state. I am also still unsure which exact component the diodes should be. Are they 0805?

• Number (ex. D1, R3)
• Value (ex. 1N4148, 10K)
• Footprint/size (ex. 0805)
• A link to a source for the component

hi,
it 's not very clear for me : is is a gateway ? or just a lora node ? or the both ?
thanks for your big and interesting work

I know this project is old, but it seems the hardware should still be usable. I am trying to make a LoRa transmitter using the LoRa library in the Arduino IDE. I am converting code I was running on a Heltec ESP32 LoRa board. I am trying to follow this (https://github.com/SensorsIot/LoRa-Point-to-Point) which uses this board. I'm not sure if the board has been assembled correctly, but I think it has. Both the leds and oled are working, but I know they are not part of the LoRa portion.

In the sample code, it uses this command to configure the pins:
LoRa.setPins(16, 17, 15); // set CS, reset, IRQ pin
It compiles and runs, but the receiver I have is not seeing anything. They are both on the same frequency and SF.

Any suggestions on what might not be right?

EDIT: I am seeing it get a package every once in awhile, so I guess it is transmitting, but most of the packets aren't being received.

I appear to have a quantity of older "Lora Node Mini" boards for Wemos D1 mini. I bought them about 2 years ago. They do not have a version number or CH21 logo but have the number WS2812 screened just under the RFM9x moduls pads. The layout and parts placement is identical to V1.3 sans the extra features.
So, Question is: Is this indeed an early version of WeMos-Lora and is is usable?
Thanks much Peter

In v1.3 the holes for the OLED pins are misaligned. The center hole seems flipped and does not align perfectly with the other two PINs. This makes it hard to just "plug and play" a standard breadboard-friendly OLED screen.

Is there any reason for this layout?

Could you add production gerber files?

Thank you.