Search found 12 matches

by Wei Lin
Tue Apr 02, 2019 10:18 am
Forum: ESP32 boards
Topic: PC as an ESP32 simulator ?
Replies: 3
Views: 439

PC as an ESP32 simulator ?

Bridges - PC as an ESP32 simulator ? Pretend your PC a Raspberry Pi or an ESP32 to connect I2C / SPI / GPIO / UART peripherals. Hello, I wrote a package for PC, in order to: 1. Use the PC to drive (via bus-converter) I2C / SPI / GPIO / UART interfaced peripheral devices. 2. On your PC, simulating t...
by Wei Lin
Wed Feb 06, 2019 10:01 pm
Forum: ESP8266 boards
Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
Replies: 8
Views: 3058

Re: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi

The error message means that the SPI communication failed. Sometimes it fails after h/w reset until s/w reset.
I have no oscilloscope hence not sure why it is so.
by Wei Lin
Fri Apr 06, 2018 4:51 pm
Forum: ESP32 boards
Topic: mini cluster of ESP32
Replies: 0
Views: 577

mini cluster of ESP32

https://raw.githubusercontent.com/Wei1234c/Broccoli/master/jpgs/Broccoli_cluster_cover.gif Hi, I wrote a package with which you can dispatch tasks to an ESP32 cluster in a Celery-Canvas fashion. For an ESP32 to function as a cluster node, it needs two sets of code (in the order of uploading to ESP3...
by Wei Lin
Mon Jan 15, 2018 2:48 pm
Forum: ESP32 boards
Topic: ESP32 and LoRa
Replies: 66
Views: 14018

Re: ESP32 and LoRa

LoRaTracker wrote:
Fri Jan 12, 2018 6:30 pm
... I dont see the LoRa device being setup correctly for high spreading factors...
I modified the driver, it should do the work.

https://github.com/Wei1234c/SX127x_driv ... 6/issues/1
by Wei Lin
Sun Jan 14, 2018 2:10 am
Forum: ESP32 boards
Topic: ESP32 and LoRa
Replies: 66
Views: 14018

Re: ESP32 and LoRa

You may also be interested in:

viewtopic.php?f=18&t=3906

It's my way to balance range and data rate, not following LoRaWAN though.
by Wei Lin
Thu Oct 12, 2017 4:01 am
Forum: ESP32 boards
Topic: MQTT bridged LoRa networks with MicroPython on ESP32
Replies: 0
Views: 2345

MQTT bridged LoRa networks with MicroPython on ESP32

https://1.bp.blogspot.com/-B-oEkVQMDWs/WjM3zK0zHDI/AAAAAAACV-U/MoXfIGxqBwYlW7HbTdqLJhaNJP4dYhlPwCLcBGAs/s400/mesh.png Hi, I use MQTT to bridge LoRa networks, in a Cellular-Network fashion. A "LoRa gateway" is an ESP32, it is also a MQTT client and a worker (like a Celery worker), so via MQTT, gatew...
by Wei Lin
Sat Oct 07, 2017 2:35 am
Forum: General Discussion and Questions
Topic: How to use scipy in micropython
Replies: 6
Views: 2573

Re: How to use scipy in micropython

FFT is so important for signal processing and many other usages, also ESP32 has ADC and DAC.

It will be very nice if FFT is built into MicroPython.
by Wei Lin
Thu Oct 05, 2017 4:18 pm
Forum: ESP8266 boards
Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
Replies: 8
Views: 3058

Re: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi

I have no SX1276 nor PyBoard, unable to answer your questions, sorry!
by Wei Lin
Tue Oct 03, 2017 3:30 pm
Forum: ESP8266 boards
Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
Replies: 8
Views: 3058

SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi

https://4.bp.blogspot.com/-epjoThNb9Ew/WY2vG0fLgZI/AAAAAAACN2E/i_ZTrmVcOJE98i3EHVQQUM3gxn7bpQLuQCKgBGAs/s640/IMG_20170811_160903.jpg Hi, I wrote a SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi. https://github.com/Wei1234c/SX127x_driver_for_MicroPython_on_ESP8266 p...
by Wei Lin
Tue Oct 03, 2017 3:28 pm
Forum: ESP32 boards
Topic: SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi
Replies: 0
Views: 614

SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi

Hi,

I wrote a SX127x (LoRa transceiver) driver for (Micro)Python on ESP8266/ESP32/Raspberry_Pi.

Merge article to viewtopic.php?f=16&t=3871#p22238

Wei Lin