How can I add a new app to UpyPhone?

You need to modify upyapps.py by adding your app logic and updating the app screen. The README shows examples for currency and weather apps using HTTP GET requests via GPRS, which require API keys for external services.

Is UpyPhone better than using Arduino for a GSM phone project?

UpyPhone uses MicroPython on pyboard, offering easier code readability and faster prototyping for Python developers. Arduino might be preferred for C/C++ projects or those needing lower-level hardware control, but UpyPhone simplifies cellular integration with MicroPython.

Can UpyPhone make VoIP calls or use data for internet browsing?

No, it only supports traditional GSM voice calls and basic HTTP/HTTPS requests over GPRS. It's not designed for VoIP, data-intensive apps, or full web browsing; focus is on core phone functions and simple web services.

What's the expected battery life with UpyPhone in sleep mode?

With sleep mode reducing power to under 5mA, battery life depends on capacity. For a 1000mAh lipo, it could last weeks in standby, but active use drains around 80mA, so frequent calling or app use will shorten it significantly.

How do I troubleshoot if my SIM800L isn't connecting to the network?

Check wiring per the README table, ensure SIM card is active, and verify power supply. The project lacks built-in diagnostics, so you may need to manually debug with AT commands or consult SIM800L documentation for connectivity issues.

Is UpyPhone suitable for a high school IoT workshop?

Yes, its educational focus and MicroPython code make it ideal for teaching basics of cellular communication and embedded UI. However, hardware assembly requires supervision, and limited app support means tailoring projects to simple examples.

micropython-upyphone — MicroPython DIY GSM Phone

What is micropython-upyphone?

UpyPhone is a DIY GSM mobile phone project built with MicroPython that runs on a pyboard with a SIM800L module and LCD touchscreen. It provides core phone functionalities like voice calls, SMS messaging, and a contact book, along with the ability to run simple internet-connected applications. The project solves the need for an accessible, programmable hardware platform to explore cellular communication and embedded UI development.

Target Audience

Electronics hobbyists, MicroPython enthusiasts, and educators looking for hands-on projects in embedded systems and IoT. It's ideal for those interested in building custom devices with cellular capabilities.

Value Proposition

Developers choose UpyPhone for its simplicity and educational value, offering a fully functional phone built with easy-to-understand MicroPython code. Unlike commercial phones, it provides complete hardware and software transparency for customization and learning.

Overview

A gsm phone using pyboard and sim800l

Use Cases

Best For

Learning GSM and GPRS communication with MicroPython
Building custom embedded devices with cellular connectivity
Educational workshops on IoT and hardware programming
Prototyping low-power touchscreen interfaces for embedded systems
Creating DIY electronics projects with phone functionality
Experimenting with HTTP/HTTPS requests over cellular networks

Not Ideal For

Commercial product development requiring scalable, production-ready firmware
Projects needing dynamic contact management or cloud sync without code changes
Teams wanting extensive third-party app support or modern smartphone features
Environments where rapid prototyping without soldering or hardware debugging is essential

Pros & Cons

Pros

Low-Power Sleep Mode

Achieves under 5mA power consumption by putting pyboard and SIM800L into low-power states, as detailed in the Sleep Mode section, ideal for battery-operated projects.

Touchscreen UI Integration

Provides a full graphical interface for calls, SMS, phone book, and apps, with multiple screen images in the README demonstrating comprehensive usability.

Internet Connectivity via GPRS

Supports HTTP/HTTPS GET requests for apps like currency and weather, enabling basic web services over cellular, as updated in November 2022.

Educational MicroPython Base

Leverages MicroPython for accessible code, making cellular communication and embedded UI development approachable for hobbyists and learners.

Cons

Static Phone Book Management

Contacts are hard-coded in phoneui.py, requiring code edits to add or modify entries, which limits user-friendliness and dynamic updates.

Hardware-Specific Design

Tied to pyboard and SIM800L module with fixed wiring, making it less adaptable to other components or custom hardware setups without significant modification.

Limited App Ecosystem

Only includes two example apps and requires manual API key setup, indicating a barebones framework with minimal out-of-the-box functionality.

micropython-upyphone

What is micropython-upyphone?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

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micropython-upyphone

What is micropython-upyphone?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

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