https://github.com/clementlecorre/esp8266-temperaturesensor
Temperature sensor Micropython on wireless ESP8266
https://github.com/clementlecorre/esp8266-temperaturesensor
dht11 ds18b20 esp8266 micropython python python3
Last synced: 2 months ago
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Temperature sensor Micropython on wireless ESP8266
- Host: GitHub
- URL: https://github.com/clementlecorre/esp8266-temperaturesensor
- Owner: clementlecorre
- Created: 2017-11-15T14:14:07.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2019-03-13T20:56:46.000Z (over 7 years ago)
- Last Synced: 2025-01-27T06:32:36.199Z (over 1 year ago)
- Topics: dht11, ds18b20, esp8266, micropython, python, python3
- Language: Python
- Size: 5.55 MB
- Stars: 2
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# ESP8266-temperatureSensor
Tested On macOS High Sierra
## Init your ESP8266
[Datasheet ESP8266](https://cdn-learn.adafruit.com/assets/assets/000/046/211/original/Huzzah_ESP8266_Pinout_v1.2.pdf?1504807178)
* Requirement
* Download micropython [esp8266-20171101-v1.9.3.bin](https://micropython.org/download)
* Download SLAB_USBtoUART driver [USB to UART Bridge Virtual COM Port (VCP)](https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers)
* Clone github repo [themadinventor/sptool](https://github.com/themadinventor/esptool)
* Clone github repo [micropython/webrepl](https://github.com/micropython/webrepl)
* brew install picocom
* pip install esptool
Plug USB to ESP8266
```
$ python3 esptool.py --port /dev/cu.SLAB_USBtoUART erase_flash
esptool.py v2.2
Connecting........_
Detecting chip type... ESP8266
Chip is ESP8266EX
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 7.9s
Hard resetting...
```
```
$ python3 esptool.py --port /dev/cu.SLAB_USBtoUART write_flash --flash_size=detect 0 esp8266-20171101-v1.9.3.bin
esptool.py v2.2
Connecting........_
Detecting chip type... ESP8266
Chip is ESP8266EX
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0040
Compressed 600888 bytes to 392073...
Wrote 600888 bytes (392073 compressed) at 0x00000000 in 34.6 seconds (effective 138.7 kbit/s)...
Hash of data verified.
Leaving...
Hard resetting...
```
ESP8266 restarts automatically after flash
You must see your device appear in your wifi ! (default password is **micropythoN**)
Try to connect
## Setup your ESP8266
For the first configuration, it is necessary to connect via USB
```
$ picocom /dev/cu.SLAB_USBtoUART -b115200
picocom v3.1
port is : /dev/cu.SLAB_USBtoUART
flowcontrol : none
baudrate is : 115200
parity is : none
databits are : 8
stopbits are : 1
escape is : C-a
local echo is : no
noinit is : no
noreset is : no
hangup is : no
nolock is : no
send_cmd is : sz -vv
receive_cmd is : rz -vv -E
imap is :
omap is :
emap is : crcrlf,delbs,
logfile is : none
initstring : none
exit_after is : not set
exit is : no
Type [C-a] [C-h] to see available commands
Terminal ready
>>> import webrepl_setup
WebREPL daemon auto-start status: disabled
Would you like to (E)nable or (D)isable it running on boot?
(Empty line to quit)
> E
To enable WebREPL, you must set password for it
New password (4-9 chars): Ohx1ThaoJ
Confirm password: Ohx1ThaoJ
Changes will be activated after reboot
Would you like to reboot now? (y/n) y
```
ESP8266 restarts automatically after setup
Now you can access the device via web socket (WebREPL daemon started on ws://192.168.4.1:8266)
## Assembly
[Datasheet ESP8266](https://cdn-learn.adafruit.com/assets/assets/000/046/211/original/Huzzah_ESP8266_Pinout_v1.2.pdf?1504807178)
DS18B20 DATA : PIN 4
DS18B20 GND (-) : GND
DS18B20 3.3v (+) : 3.3v
RESET : RST TO PIN 16
## Upload code
You must be connect to micropython wifi
### Ui method
Use `webrepl.html` file in micropython/webrepl repo
### Command line method
Use `webrepl_cli.py` file in micropython/webrepl repo
```
$ ./webrepl_cli.py -p Ohx1ThaoJ ~/mygit/ESP8266-temperatureSensor/DS18B20/main.py 192.168.4.1:/
op:put, host:192.168.4.1, port:8266, passwd:Ohx1ThaoJ.
/Users/clement/mygit/ESP8266-temperatureSensor/DS18B20/main.py -> /main.py
Remote WebREPL version: (1, 9, 3)
Sent 2836 of 2836 bytes
```
**Be careful** the code here contains a sleep, n this case the wifi sometimes in standby. It will have to be taken into account during the test.
Tips: Log in via picocom (USB) and interrupt the program via ctrl+C.
## Grafana
You can add a grafana dashboard to view the data
## Helping
```
Control commands:
CTRL-A -- on a blank line, enter raw REPL mode
CTRL-B -- on a blank line, enter normal REPL mode
CTRL-C -- interrupt a running program
CTRL-D -- on a blank line, do a soft reset of the board
CTRL-E -- on a blank line, enter paste mode
For further help on a specific object, type help(obj)
```
### Manage files
```
>>> import os
>>> os.remove('main.1.py')
>>> os.listdir()
['boot.py', 'webrepl_cfg.py', 'main.py']
>>>
```