MicroPython Forum (Archive)

I started a new MicroPython project, pybox, which is a utility for embedded engineers, makers and electronic enthusiasts. It integrates multiple functions into a small box, such as programmable DC power, ADC / DAC, I2C / SPI / UART / GPIO, microSD, etc. Pybox uses ESP32 as the microcontroller, and uses MicroPython for programming control. It has good scalability in both hardware and software.


Main features:

• Controll via USB / WiFi / Bluetooth
• Programmable power supply, which can adjust the output voltage and current limit
• Output voltage and current measure
• Programmable I2C / SPI / UART / GPIO with level transition
• 4-channel ADC input
• 2-channel DAC output
• USB type-C interface
• MicroSD slot
• OLED display
• Automatic ADC accuracy correction
• OTA/USB firmware upgrade
• WEB interface
• Low cost

application

• Remote configurable measurement
• Remote control
• Embedded development debugging
• Data recorder / data analyzer
• Function waveform generator
• Network / Bluetooth control
• Traditional multimeter replacement

The first version of engineering prototype has been completed, it works, but there are some small bugs, and I start to improve it. I hope it will be useful, and I also hope someone can help develop web programs for it.

Looks good, how much does it cost?

I have not calculated the cost carefully yet, because some circuits need to be modified. Now the bom cost is less than $20, and add the shell and production costs, I think it will be less than $40.