Credit where due

This is the full list of attributions for our artwork adapted from CC-licensed works.

• “Various hand-drawn opamp schematic symbols” by Grey and Slate, Haberdashers, adapted from “Frequently used opamp schematics” by Peo-commonswiki under CC BY-SA 3.0. “Various hand-drawn opamp schematic symbols” © 2026 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N in heart shape” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-drawn Signetics NE555N in heart shape” © 2026 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip with ‘love them more’ text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip with ‘love them more’ text” © 2026 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip with ‘love her more’ text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip with ‘love her more’ text” © 2026 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip with ‘love him more’ text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip with ‘love him more’ text” © 2026 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip with ‘love you more’ text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip with ‘love you more’ text” © 2026 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N with ‘love you more’ text” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-drawn Signetics NE555N with ‘love you more’ text” © 2026 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N with ‘love him more’ text” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-drawn Signetics NE555N with ‘love him more’ text” © 2026 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N with ‘love them more’ text” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-drawn Signetics NE555N with ‘love them more’ text” © 2026 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N with ‘love her more’ text” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-drawn Signetics NE555N with ‘love her more’ text” © 2026 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand drawn RC switch circuit, with text” adapted from “RC switch” by PureCore under CC BY-SA 3.0. “Hand drawn RC switch circuit, with text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Blue Box” adapted from “Blue Box at the Powerhouse Museum” by Maksym Kozlenko under CC BY-SA 4.0. “Hand-drawn Blue Box” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Blue Box with in my head text, network” adapted from “Blue Box at the Powerhouse Museum” by Maksym Kozlenko under CC BY-SA 4.0. “Hand-drawn Blue Box with in my head text, network” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Blue Box with text, phreak on” adapted from “Blue Box at the Powerhouse Museum” by Maksym Kozlenko under CC BY-SA 4.0. “Hand-drawn Blue Box with text, phreak on” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Blue Box with in my head text, phreak on” adapted from “Blue Box at the Powerhouse Museum” by Maksym Kozlenko under CC BY-SA 4.0. “Hand-drawn Blue Box with in my head text, phreak on” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Cap’n Crunch whistle with in my head text, phreak on” adapted from “Cap’n Crunch Frühstücksflocken Werbebeilage Spielzeugpfeife” by 1971markus under CC BY-SA 4.0. “Hand-drawn Cap’n Crunch whistle with in my head text, phreak on” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Cap’n Crunch whistle with in my head text, network” adapted from “Cap’n Crunch Frühstücksflocken Werbebeilage Spielzeugpfeife” by 1971markus under CC BY-SA 4.0. “Hand-drawn Cap’n Crunch whistle with in my head text, network” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Cap’n Crunch whistle, phreak on text ” adapted from “Cap’n Crunch Frühstücksflocken Werbebeilage Spielzeugpfeife” by 1971markus under CC BY-SA 4.0. “Hand-drawn Cap’n Crunch whistle, phreak on text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Cap’n Crunch whistle” adapted from “Cap’n Crunch Frühstücksflocken Werbebeilage Spielzeugpfeife” by 1971markus under CC BY-SA 4.0. “Hand-drawn Cap’n Crunch whistle” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn OpAmp collection with ‘in my head’ text” adapted from “Several operational amplifier chips in DIP-8 packages.” by Omegatron under CC BY-SA 3.0. “Hand-drawn OpAmp collection with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn AD570 with ‘in my head’ text” adapted from “8-Bit Successive Approximation Analog-to-Digital Converter” by Mister rf under CC BY-SA 4.0. “Hand-drawn AD570 with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Commodore 8580 SID chip with ‘in my head’ text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn Commodore 8580 SID chip with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn MOS 6502 with ‘in my head’ text” by Grey and Slate, Haberdashers, adapted from “A MOS Technology MCS6502 microprocessor in a white ceramic 40-pin dual in-line package” by Christian Bassow underCC BY-SA 4.0. “Hand-drawn MOS 6502 with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Intel 4004 with ‘in my head’ text” by Grey and Slate, Haberdashers, adapted from “A processor Intel C4004 with grey traces (no gray trace version)” by Stelo.xyz, Pttn, or Thomas Nguyen under CC BY-SA 4.0. “Hand-drawn Intel 4004 with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn transistor symbols” by Grey and Slate, Haberdashers, adapted from “Symbol for an NPN BJT and PNP BJT” by Oemgatron under CC BY-SA 3.0. “Hand-drawn transistor symbols” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N with ‘in my head’ text” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-drawn Signetics NE555N with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip with ‘In my head’ text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip with ‘in my head’ text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics µa741C” by Grey and Slate, Haberdashers, adapted from “ua741 IC, produced 1972 by Signetics Corp” by Teravolt under CC BY 3.0. “Hand-drawn Signetics µa741C” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics µa741C and Signetics name logo” by Grey and Slate, Haberdashers, adapted from “ua741 IC, produced 1972 by Signetics Corp” by Teravolt under CC BY 3.0. “Hand-drawn Signetics µa741C and Signetics name logo” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics µa741C and Signetics logotype” by Grey and Slate, Haberdashers, adapted from “ua741 IC, produced 1972 by Signetics Corp” by Teravolt under CC BY 3.0. . “Hand-drawn Signetics µa741C and Signetics logotype” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N and Signetics name logo” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-draw Signetics NE555N and Signetics name logo” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Signetics NE555N and Signetics logotype” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-draw Signetics NE555N and Signetics logotype” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn AVR demo board, front and back” adapted from “First Atmel AVR prototype demo board, front and back” by Paul Rako under CC BY-SA 3.0. “Hand-drawn AVR demo board, front and back” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip, small, with MOS logo” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0.”Hand-drawn 6581 chip, small, with MOS logo” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip, large, with MOS logo” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip, large, with MOS logo” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip, small, with MOS SID text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0.”Hand-drawn”6581 chip, small, with MOS SID text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip, large, with MOS SID text” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip, large, with MOS SID text” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn Raspberry Pi 1 B” by Grey and Slate, Haberdashers, adapted from “Raspberry Pi Broadcom BCM2835 single-board computer” by Gareth Halfacree under CC BY-SA 2.0. “Hand-drawn Raspberry Pi 1 B” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn MOS 6502 with MOS logo” by Grey and Slate, Haberdashers, adapted from “A MOS Technology MCS6502 microprocessor in a white ceramic 40-pin dual in-line package” by Christian Bassow under CC BY-SA 4.0. “Hand-drawn MOS 6502 with MOS logo” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Logo Python”, by Python.org, used under CC-BY 2.5.
• “MicroPython logo”, by Micropython.org, used under the MIT License. The full license text is available HERE.
• “Blinka logo” Phillip Torrone, Adafruit Industries, used under CC-BY 4.0.
• “Hand-drawn NE555 block diagram” adapted from “NE555” by Radinpirouz under CC BY-SA 4.0. “Hand-drawn NE555 block diagram” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn OpAmp collection” adapted from “Several operational amplifier chips in DIP-8 packages.” by Omegatron under CC BY-SA 3.0. “Hand-drawn OpAmp collection” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “6581 Pin configuration design” adapted from “6581 Pin configuration” by Bill Bertram under CC BY 2.5. 
• “Hand-drawn Commodore SID chip” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn Commodore SID chip” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn 6581 chip” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn 6581 chip” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• Hand-drawn SID chips” adapted from “Two variants of ‘SID’ sound chips” by Taras Young under CC BY-SA 4.0. “Hand-drawn SID chips” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn capacitors” adapted from “Capacitors” by Eric Schrader under CC BY-SA 2.0. “Hand-drawn capacitors” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand drawn RC switch circuit” adapted from “RC switch” by PureCore under CC BY-SA 3.0. “Hand drawn RC switch circuit” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn carbon and ceramic resistors of different power ratings” adapted from “Carbon and ceramic resistors of different power ratings” by David Ludovino under CC BY-SA 3.0. “Hand-drawn carbon and ceramic resistors of different power ratings” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Diodes symbols vertical” adapted from “Open source diagram of the electrical component knows as a diode.” by Omegatron under CC BY-SA 3.0. “Diodes symbols vertical” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Diodes symbols horizontal” adapted from “Open source diagram of the electrical component knows as a diode.” by Omegatron under CC BY-SA 3.0. “Diodes symbols horizontal” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn transistor case styles” adapted from “Transistor case styles” by Ulfbastel under CC BY-SA 3.0. “Hand-drawn transistor case styles” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn voltaic pile” adapted from “Pila di Volta – foto scattata a Explorazione, Treviglio (BG)” by Luigi Chiesa under CC BY 3.0.
• “Hand-drawn thru-hole transistors” adapted Several thru-hole transistors” by ArnoldReinhold under CC BY-SA 3.0. “Hand-drawn thru-hole transistors” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn AD570” adapted from “8-Bit Successive Approximation Analog-to-Digital Converter” by Mister rf under CC BY-SA 4.0. “Hand-drawn AD570” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Modified Circuit diagram of a bipolar 555 timer IC” by Grey and Slate, Haberdashers, adapted from “Circuit diagram of a bipolar 555 timer IC” by Wdwd under CC BY 3.0.
• “Hand-drawn vacuum tube lineup” by Grey and Slate, Haberdashers, adapted from “A collection of electron tubes” by Stefan Riepl under CC BY-SA 2.0. “Hand-drawn vacuum tube lineup” © 2025 by Grey and Slate, Haberdashers, is licensed under CC BY-SA 4.0.
• “Hand-drawn nixie tubes” by Grey and Slate, Haberdashers, adapted from “Nixie tube Telefunken ZM1210 (without coating) operating.” by Georg-Johann Lay under CC BY-SA 3.0. “Hand-drawn nixie tubes” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn MOS 6502” by Grey and Slate, Haberdashers, adapted from “A MOS Technology MCS6502 microprocessor in a white ceramic 40-pin dual in-line package” by Christian Bassow under CC BY-SA 4.0. “Hand-drawn MOS 6502” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Raspberry Pi 1 B” by Grey and Slate, Haberdashers, adapted from “Raspberry Pi Broadcom BCM2835 single-board computer” by Gareth Halfcree under CC BY-SA 2.0. “Hand-drawn Raspberry Pi 1 B” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Hand-drawn Intel 4004” by Grey and Slate, Haberdashers, adapted from “A processor Intel C4004 with grey traces(no gray trace version)” by Stelo.xyz, Pttn, or Thomas Nguyen under CC BY-SA 4.0. “Hand-drawn Intel 4004” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.
• “Signetics NE555N” by Grey and Slate, Haberdashers, adapted from “Signetics NE555N, the original 555 type oscillator, in a dual-in-line plastic package, manufactured in 1978 (work week 28)” by Stefan506 under CC BY-SA 3.0. “Hand-draw Signetics NE555N” © 2025 by Grey and Slate, Haberdashers is licensed under CC BY-SA 4.0.