Circuitrocks

sam_python

<r>Coming from software. My analog soil moisture sensor reads raw ADC (0-4095), but I need % moisture. Calibration confuses me. 
 
<s>[b]</s>What I did:<e>[/b]</e>
<LIST><s>[list]</s>
<LI><s>[*]</s>Dry sensor in air: reads ~3200 (call this 0%)</LI>
<LI><s>[*]</s>Sensor in water: reads ...

sam_python

<r>MicroPython on Pico. Started with Thonny (easy REPL). Now project has 6 files, Thonny file management painful. 
 
<s>[b]</s>Tried:<e>[/b]</e>
<LIST><s>[list]</s>
<LI><s>[*]</s>Thonny: great REPL, clunky multi-file</LI>
<LI><s>[*]</s>mpremote: CLI, scriptable, steep start</LI>
<LI ...

sam_python

<r>Three CircuitPython boards on my desk. Project A needs adafruit_sensor 5.x, project B needs 4.x. Different builds break each other. 
 
From Python web world, I would use venv. CircuitPython does not have that. 
 
<s>[b]</s>Options found:<e>[/b]</e>
<LIST><s>[list]</s>
<LI ...

sam_python

<r>Coming from web Python. MicroPython on Pico gives me both _thread (run on core 1) and uasyncio. When to pick which? 
 
<s>[b]</s>What I figured out:<e>[/b]</e>
<LIST><s>[list]</s>
<LI><s>[*]</s>_thread = dedicated CPU core, hardware parallel, good for hard-real-time tasks (motor ...

sam_python

<r>Coming from Python web background. Trying both boards for prototyping. 
 
<s>[b]</s>Pi Pico W:<e>[/b]</e> simpler MicroPython port, less arbitrary 'why doesn't this work' moments. Slower (133MHz dual M0+). WiFi works but limited (no BLE). 
 
<s>[b]</s>ESP32:<e>[/b]</e ...

sam_python

<r>Built sensor node publishing BME280 to Mosquitto. asyncio + umqtt.simple combo works with sharp edges. Sharing for next person. 

<CODE><s>[code]</s>import uasyncio as asyncio
from machine import Pin, I2C
from umqtt.simple import MQTTClient
import network, bme280

broker = '192.168.1.10 ...

sam_python

<r>Building a sensor node that publishes BME280 readings to a Mosquitto broker. asyncio + umqtt.simple combo works but had some sharp edges. Sharing for the next person. 

<CODE><s>[code]</s>import uasyncio as asyncio
from machine import Pin, I2C
from umqtt.simple import MQTTClient
import ...

sam_python

<r>After yung shock ng REPL discovery (other thread), I went down the MicroPython rabbit hole. asyncio works on Pico, and once you wrap your head around it, much cleaner than blocking sleep() loops. 
 
Quick example I wrote, logs a DHT22 every 30 seconds AND blinks an LED every 500ms, in ...

sam_python

<t>Mga 1 hour lang ako on the Pico W with Thonny. Connected via USB, opened the REPL, started typing Python directly into the running microcontroller. Read a sensor in real-time. No compile-upload cycle. 
 
Software dev ako, sanay ako sa "save file, run python script, see result" loop. To be ...

sam_python

<r>Just got my first Pi Pico (regular, not the W variant). Coming from a few years of Arduino Uno/Nano work. So far impressed: cheaper than a Nano, faster, more memory. 
 
Pero sigurado may catch right? May mga things kasi Arduino made easy that Pico does differently, at what point will I ...

Circuitrocks

Search found 12 matches

Two-point sensor calibration in code, is this the right approach?

Pico workflow: Thonny vs mpremote vs rshell, what stuck?

CircuitPython project management, libraries breaking between projects

Pi Pico _thread vs uasyncio, when to use which?

Pi Pico vs ESP32 for MicroPython beginners

Pi Pico W as MQTT client, asyncio code that works

Pi Pico W as MQTT client, full asyncio code that works

MicroPython async/await on Pico, sensor logger example

REPL on MicroPython - was this always possible??

First Pi Pico - coming from Arduino, ano ang catch?