Search found 167 matches
- Thu May 07, 2020 9:36 am
- Forum: ESP32 boards
- Topic: measure relative distance between devices through wifi or bluetooth (COVID19 application)
- Replies: 2
- Views: 3812
Re: measure relative distance between devices through wifi or bluetooth (COVID19 application)
Distance estimation can be done using RSSI of received BLE advertisments from other devices. I think there are some hackable smart-watch or smart-bands available on the market which are based on nRF52. This platform can run MicroPython as well. In that case you would not need to develop custom hardw...
- Thu May 07, 2020 9:26 am
- Forum: ESP32 boards
- Topic: ESP 32 - is it possible to use W5500 ?
- Replies: 8
- Views: 10398
Re: ESP 32 - is it possible to use W5500 ?
My understanding is that you can still use socket API of the Wiznet chip if you write a driver for that. It just won't be exposed to lwip. Am I right?
- Tue May 05, 2020 5:44 pm
- Forum: ESP32 boards
- Topic: ESP32 auto reset circuit
- Replies: 13
- Views: 28230
Re: ESP32 auto reset circuit
I managed to find some solution. I will see in the future if it is reliable enough.
It is described here:
https://www.esp32.com/viewtopic.php?f=12&t=15461
It is described here:
https://www.esp32.com/viewtopic.php?f=12&t=15461
- Mon May 04, 2020 8:41 am
- Forum: ESP32 boards
- Topic: ESP32 auto reset circuit
- Replies: 13
- Views: 28230
Re: ESP32 auto reset circuit
@Roberthh Reset is triggered immediately after the the FTDI chip is connected to USB cable/host. The chip is powered from bus. I think it is related to power-on state/sequence of DTR and RTS pins. @tve You are right regarding two use-cases of the interface. The idea was not to expose reset and flash...
- Sun May 03, 2020 3:03 pm
- Forum: ESP32 boards
- Topic: ESP32 auto reset circuit
- Replies: 13
- Views: 28230
Re: ESP32 auto reset circuit
I built custom board with FTDI231X and above-mentioned auto-reset circuit. Works with esptool without any issues. However, in my application I need to have the ESP32 running continuously (powered from different power source than USB). When necessary I want to be able to connect to REPL via USB conne...
- Wed Apr 15, 2020 7:18 am
- Forum: Programs, Libraries and Tools
- Topic: OLED with SSD1322 controller
- Replies: 8
- Views: 21051
Re: OLED with SSD1322 controller
I am familiar with SSD1306 driver and used it a lot in the past. However SSD1306 is limited to 128*64px and I was in need of something bigger. SSD1322 does not support I2C, only SPI and parallel. Yes, I was also thinking to adapt SSD1322 library for CPython. I should have hardware with 3.12" 256*64p...
- Fri Feb 21, 2020 8:00 am
- Forum: ESP32 boards
- Topic: New ESP32 development board DMtech DEV01 with NB-IoT interface
- Replies: 9
- Views: 14170
Re: New ESP32 development board DMtech DEV01 with NB-IoT interface
Sorry, no progress on this board. Are you able to manufacture by yourself if I share gerbers and BOM?
- Wed Feb 12, 2020 7:38 am
- Forum: Programs, Libraries and Tools
- Topic: OLED with SSD1322 controller
- Replies: 8
- Views: 21051
OLED with SSD1322 controller
Is there any driver/library for OLED display with SSD1322 controller? Usual resolution is 256px * 64px.
- Fri Oct 18, 2019 12:53 pm
- Forum: General Discussion and Questions
- Topic: Decoding BLE Scan Results
- Replies: 8
- Views: 10125
Re: Decoding BLE Scan Results
The string is not BLE address but probably iBeacon UUID, which is encoded in the message. Some resources on how to decode BLE advertisments: https://www.silabs.com/community/wireless/bluetooth/knowledge-base.entry.html/2017/02/10/bluetooth_advertisin-hGsf https://www.blueupbeacons.com/docs/WorkshopB...
- Tue Aug 20, 2019 11:15 am
- Forum: ESP32 boards
- Topic: Flash Esp32 from another Esp32
- Replies: 2
- Views: 3819
Re: Flash Esp32 from another Esp32
I am also interested in this.
The goal: To build tester device based on MP which would be able to flash specific firmware into target device.
The goal: To build tester device based on MP which would be able to flash specific firmware into target device.