- https://github.com/marcelstoer/nodemcu-pyflasher
- https://nodemcu.readthedocs.io/en/master/getting-started/
- https://tasmota.github.io/docs/
- https://www.espressif.com/en/support/download/other-tools (Flash Download Tools (ESP8266 & ESP32 & ESP32-S2))
- https://github.com/espressif/esptool
- If you get
[upload] could not open port /dev/ttyACM0: [Errno 13] Permission denied: '/dev/ttyACM0'error, try:
sudo usermod -a -G tty ${USER}
sudo chmod a+rw /dev/ttyACM0
- Add ESP8266 to Arduino IDE Board Manager
- Pin numbers in Arduino correspond directly to the ESP8266 GPIO pin numbers. pinMode, digitalRead, and digitalWrite functions work as usual, so to read GPIO2, call digitalRead(2).
- ESP8266 Howto
-
Dowload actual firmware from https://www.espressif.com/en/products/modules/esp8266/resources or use included one.
-
Write bootloader:
esptool --port /dev/ttyUSB0 write_flash 0x00000 boot_v1.2.bin 0x01000 at/512+512/user1.1024.new.2.bin 0xfc000 esp_init_data_default.bin 0x7e000 blank.bin 0xfe000 blank.bin
esptool run
Code:
| Symbol | Signal level switch |
|---|---|
| 1 | 3H+1L |
| 0 | 1H+3L |
Message:
| Part | Signal level switch |
|---|---|
| Preamble | 32 clk |
| Secret code | 20x4 clk |
| Button code | 4x4 clk |
- https://www.gnuradio.org/
- https://www.rtl-sdr.com/
- https://github.com/NetHome/ProtocolAnalyzer - IR/RF protocol analyser
- apt-get install rtl-433 - generic data receiver, mainly for the 433.92 MHz, 868 MHz (SRD), 315 MHz, 345 MHz, and 915 MHz ISM bands.
- gqrx - GUI for monitore and record radio signal
- audacity - audio editor, allows to visualise signal
Frequency 433MHz - Wavelength 0.692 m
Length of dipole must me multiple of half the wavelength, e.g. 0.345.
- Transmitter Model: FS1000A
- Transmitting Frequency: 433.92MHz, 315MHz, 330MHz
- Operating Voltage: 3V to 12V
- Transmitting Power: 10mW to 40mW 16dBm
- Transmitting Range: 20 to 100 meters through walls & 500 meters max in open area
- Data Transfer Rate: <10 Kilo Bytes Per Second (Range drops above 2400 bytes per second)
- Modulation Type: OOK
- Current Consumption: 20 to 28mA
- Current Consumption in Standby: 0mA
- Receiver Model: XY-MK-5V
- Transmitting Frequency: 433.92MHz, 315MHz, 330MHz
- Operating Voltage: 5V
- Receiving Sensitivity: 105DB
- Modulation Type: OOK
- Current Consumption in Standby: 4mA
Use following server for test purposes
# create instance
./bin/artemis create radiokey --require-login --user test --password test --autocreate --no-amqp-acceptor --no-hornetq-acceptor --no-stomp-acceptor
# start broker as standalone process
./radiokey/bin/artemis run
# start broker in background
./radiokey/bin/artemis-service startstart broker in background
HTTP Server started at http://localhost:8161 Artemis Jolokia REST API available at http://localhost:8161/console/jolokia Artemis Console available at http://localhost:8161/console
Configure server in `/etc/mosquitto/mosquitto.conf
listener {port} {publicIp}
persistence false
Configure credentials:
sudo mosquitto_passwd /etc/mosquitto/pwfile your_user_name
Connect to response topic to check that hub is working and may listen to commands from moquitto server
mosquitto_sub -h {publicIp} -p {port} -t response
This will show heartbeats:
{"command":"heartbeat","mac":"AA:AA:AA:AA:AA:AA","deviceId":"HUBESP01","protocolVersion":"0.0.1"}
Now you may send commands to concrete hub using it's MAC address:
mosquitto_pub -h {publicIp} -p {port} -t "AA:AA:AA:AA:AA:AA" -m "{"command": "send", "protocol": "1", "repeats": "25", "pulseLength": "315", "code": "14607921", "bitLength": "24"}"
All commands sends to topic with name of hub's mac address.
Switch hub to scan mode when it scans codes from air
{"command": "scan", "repeats": "10", "delayMs": "100"}
{"command": "restart"}
Force hub reconfiguration: reset wi-fi settings and go to initialisation mode
{"command": "reconfigure"}
Send kode of controllable device into air:
{"command": "send", "protocol": "1", "repeats": "25", "pulseLength": "315", "code": "14607921", "bitLength": "24"}