Steven M. Hernandez

At the end of each year, I design a small interactive robot.
This was the first, designed in 2015.
See other robots.

Technical Details:

Materials: Pine wood, electrical components
Features: Cyan OLED eyes, interchangable heart-cartridge, momentary switch.
Programming: Arduino (C++)

Two synchronized cyan OLED eyes display programmable messages and eye shapes to convey different emotions.

Custom designed heart-shaped PCB cartridges (Heartridges) with on-board EEPROM storage allows Memo to express fully programmable and customizable messages.

Interchangable heart-shaped cartridges can easily be removed and slotted directly into the body of Memo.

Assembly inspired

Data format on cartridge uses OPCODE (1-byte) and OPERANDS (variable-byte). Build your own Cartridge ROM:

Run Show Hex Hide Hex

0000: OPCODE OPERAND

0x{{ i.toString(16).padStart(2, '0') }}:

Memo (2015)
Cacto (2016)
Petso (2017)
GIFmo (2018)
Blobso (2019)
Astro (2020)
Roto (2021)
Octo (2022)

Memo (2015)

Assembly inspired

Other works in this series