ANAVI Macro Pad 10 and Knobs are Here!

One, two, three new products! After several months of development we are happy to present you 3 new open source hardware mini mechanical keyboards and knobs. The crowdfunding campaign started on Monday!

ANAVI Knob 1, ANAVI Knobs 3 and ANAVI Macro Pad 10

ANAVI Macro Pad 10, ANAVI Knobs 3 and ANAVI Knob 1 all come with gold-plated black printed circuit boards, Raspberry Pi RP2040 microcontrollers, USB-C connector and clickable rotary encoders. The popular open source KMK firmware allows you to easily program and configure custom keyboard layouts and macros using CircuitPython.

ANAVI Knobs 3

Once again we rely on Crowd Supply for the crowdfunding. The campaign has a very modest goal of just $1 and it has been already funded. Our plan is to make the keyboards in Plovdiv, Bulgaria, EU thanks to the trusted supply chain we have established throughout the years. We hope you will jump in and help us bring these entirely open source mechanical keyboards to life!

ANAVI Knob 1, ANAVI Macro Pad 10 and ANAVI Knobs 3

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ANAVI Macro Pad 10 and Knobs Coming Soon

With Crowd Supply we are preparing a new crowdfunding campaign for 3 open source hardware mechanical keyboards: ANAVI Macro Pad 10, ANAVI Knobs 3 and ANAVI Knob 1.

ANAVI Macro Pad 10, ANAVI Knobs 3 and ANAVI Knob 1

There are many common things between these 3 mini mechanical keyboards:

  • Seeed XIAO RP2040 – a power module with USB-C and Raspberry Pi RP2040 MCU from Seeed Studio
  • Rotary encoders
  • KMK – an open source firmware for mechanical keyboards written in CircuitPython
  • Open source hardware designed with the free and open source software KiCad

Subscribe at our pre-launch page at Crowd Supply to be the first to know when we launch the crowdfunding campaign!

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Building an Air Quality Monitor with ANAVI Infrared pHAT and MH-Z19

Takuya Matsuyama, a developer from Japan making a Markdown note-taking app called Inkdrop, published a wonderful tutorial how to build an air quality monitor using Raspberry Pi Zero W, ANAVI Infrared pHAT and MH-Z19B NDIR infrared gas module.

How to build an air quality monitor using Raspberry Pi Zero W + ANAVI Infrared pHAT

MH-Z19B is an intelligent infrared CO2 module which interacts with the Raspberry Pi using UART (universal asynchronous receiver-transmitter). Takuya uses the UART port on ANAVI Infrared pHAT to attach MH-Z19B. The rest of the sensor modules for his setup are included in ANAVI Infrared pHAT Advanced kit: HTU21D for temperature and humidity, BMP180 for barometric pressure and BH1750 for light.

By the way, initially we had published open source examples for using HTU21D, BMP180 and BH1750 in the C programming languages using the library wiringpi. Takuya also based his setup on wiringpi. However, wiringpi is now deprecated therefore we have replaced it with another library called libi2c-dev. Furthermore we added examples written in Python 3.

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MicroPython on Raspberry Pi Pico with Thonny IDE

Raspberry Pi Pico is a tiny and fast development board by the Raspberry Pi Foundation built using the brand new RP2040 32-bit dual ARM Cortex-M0+ microcontroller. The major advantage of Raspberry Pi Pico is the affordable price as it is available for about $4 (without taxes and shipping).

In this video tutorial you will learn how to get started with MicroPython using the open source Thonny IDE on Raspberry Pi Pico. Thonny runs on Mac, Windows and Linux distributions, in the video it is used on Ubuntu. The video includes Pico unboxing, MicroPython installation guide, blinking LED example, MicroPython REPL demo and conclusions.

Useful links:

The video tutorial was sponsored by PCBway which provide high-quality prototyping services. On the photo you can see prototypes of green printed circuit boards with white silkscreen following Raspberry Pi specifications for micro Hardware Attached on Top (uHAT).

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