Sad Robot Radio

thingiverse

I recently acquired a Sad Robot 1 kit from madebya2.com.au/product/sad-robot-1/. This little robot is quite adorable, featuring a Nokia 5110 LCD screen and an Arduino Nano. Following my successful construction of the Art Deco FM Radio (https://www.thingiverse.com/thing:3896141), which also utilizes a Nokia 5110 LCD screen, I decided to transform my tiny companion into a FM Radio. The right arm boasts two buttons for frequency adjustments, while the left arm has two buttons for volume control. A small speaker is cleverly integrated into its head. Video: https://youtu.be/qZzJVGkz1BU 3D Printing: To create this radio, you'll need to print specific parts and replace those in your kit: Sad - Top.stl This component holds a small speaker and printed circuit board (see below) Sad - Buttons.stl These arm covers house two small 6x6mm switches for increasing and decreasing both frequency and volume Sad - Arms (111%).stl These replacement arms have an increased depth of 111%, providing extra space between the battery and switches Schematic and PCB: The PCB features a Arduino Pro Mini, MCP4011 digital potentiometer, TEA5767 module, an amplifier based on the TEA2025 chip, and headers for connections. I created my board using the Toner method. Additionally, two 100K resistors join the left and right channels of the TEA5767 FM Radio module on the back of the TEA5767 module. Eagle files are included. Software: The Arduino sketch and libraries used are provided. Install these libraries into your Arduino IDE and compile and upload the sketch to your board.