pico-solar-system VS EuroPi

Source code and instructions

Thanks! I just wanted to try driving an ST7789 from a CircuitPython :) As for the custom pimoroni MicroPython build it's also fine and seems way faster than displayio, I've used it in a couple of projects e.g. https://github.com/dr-mod/pico-solar-system

Thanks. I designed a device like you're describing some time ago: * https://github.com/dr-mod/pico-solar-system * https://www.reddit.com/r/Astronomy/comments/on9dpl/ive_build_this_tiny_clock_to_always_be_aware_of/

Thanks! As for displaying all planets, here is another project for Pico I made some time ago: * https://github.com/dr-mod/pico-solar-system * https://www.reddit.com/r/raspberry_pi/comments/q98cpj/my_pico_solar_system_got_featured_in_magpi_the/

I'm building the Raspberry Pi Pico Solar System located here by u/dr2mod. Noobie using MicroPython, so go easy.

Code is based on these two projects: * https://github.com/dr-mod/pico-solar-system * https://github.com/dr-mod/true-binary-mode-clock

If anyone is interested, here is the link to the magazine and the repository of the project : * https://magpi.raspberrypi.org/ * https://github.com/dr-mod/pico-solar-system

I’ve pushed the code and instructions to my GitHub here: https://github.com/dr-mod/pico-solar-system Do let me know if you have any ideas on additional features that could be added.

If you want to build one yourself, you can find the instructions here: https://github.com/dr-mod/pico-solar-system

Hi all, I'm making a Eurorack sequencer module with 4 pitch CV outputs (NOT audio) and I've noticed that DACs are kind of a pain due to being expensive, SMT-only & still requiring buffering with op amps. I figure that a good alternative would be to buy a Raspberry Pi Pico for $4 which will give me 8 PWM outputs that I would then hook up to an output stage like the one in the europi (shown here: https://github.com/Allen-Synthesis/EuroPi/blob/main/hardware/EuroPi/schematic/europi_schematic.pdf)

Bom has links for sourcing parts

Up until now I've been using the analog input stage from the EuroPi schematic as my model for a CV in. You can see it here:

There is no super cheap way to get a lot of analog outputs from an MCU. Filtered PWM is your best bet for cost effectiveness (I recommend looking at the EuroPi from allen synthesis : https://github.com/Allen-Synthesis/EuroPi). Otherwise if PWM doesn't work for you, you'll need to look into DAC chips. The MCP4728 is a good spot to start, it's 12-bit and has 4 channels: https://www.adafruit.com/product/4470. Since it's I2C controlled you can have multiple of them on one bus. Maybe looking into a 16 channel PWM driver for a lot of outputs: https://www.adafruit.com/product/815. Hope this helps!

The project is completely open-source and open hardware, and the contributors together have made this big list of scripts that you can run using a menu system!

The project is entirely open-source but I do also sell the Panel+PCBs on my site!

Check out the EuroPi project https://github.com/Allen-Synthesis/EuroPi

EuroPi Turing Machine script is feeding the Uncertainty cv input with pulse 1 opening an envelope on Maths for voice 1 & 2, pulse 2 opens the second Maths envelope for sub osc voice 3. A little delay added for texture. That's pretty much it!

EuroPi - A reprogrammable Eurorack module based on the Raspberry Pi Pico

The patch.init() is still a great way to start, but you could save some money ditching the audio i/o and build yourself an EuroPi. However, that requires DIY, obviously.