Totally a calculator

0x62b·totally-a-calculator·pcb/yes_sir_this_is_a_calculator.kicad_pcb

About the Totally a calculator PCB

Totally a calculator is an open source RP2040/RP2350 PCB design by 0x62b, published on GitHub. It is a 2-layer board measuring 81.4 × 148.8 mm, with 63 components from 37 distinct parts.

Its main chip is the RaspberryPi_Pico, from the RP2040/RP2350 family. Other key parts include the TP4056-42-ESOP8. By type, the board carries 27 diodes, 26 switches, 5 resistors, 1 IC, 1 module and 1 transistor.

It belongs with the displays & leds designs in this gallery.

From the project

yes sir this is a calculator (a "calculator" with some "extra apps" on it)

Onshape link Note: the display appears to be unaligned due to the fact that i used a different display to the model in the render. However, I designed the case around the display being used, so it should be fine.

Totally a calculator, from the project README — From the project README

Main components on the Totally a calculator

TP4056-42-ESOP8 RaspberryPi_Pico

Totally a calculator bill of materials (BOM)

63 components, 37 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	TP4056-42-ESOP8	SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias	U1
1	RaspberryPi_Pico	RaspberryPi_Pico_Common_Unspecified	A1
1	PMOS	SOT-23	Q1
1	Conn_01x04	PinSocket_1x04_P2.54mm_Vertical	J1
1	SW_SPDT	SW_SPDT_PCM12	SW1
1	Up	SW_PUSH_6mm	SW2
1	Left	SW_PUSH_6mm	SW3
1	Select	SW_PUSH_6mm	SW4
1	Right	SW_PUSH_6mm	SW5
1	Down	SW_PUSH_6mm	SW6
1	7	SW_PUSH_6mm	SW7
1	8	SW_PUSH_6mm	SW8
1	9	SW_PUSH_6mm	SW9
1	DEL	SW_PUSH_6mm	SW10
1	AC	SW_PUSH_6mm	SW11
1	4	SW_PUSH_6mm	SW12
1	5	SW_PUSH_6mm	SW13
1	6	SW_PUSH_6mm	SW14
1	*	SW_PUSH_6mm	SW15
1	/	SW_PUSH_6mm	SW16

Show 17 more

Qty	Part	Footprint	Refs
1	3	SW_PUSH_6mm	SW17
1	2	SW_PUSH_6mm	SW18
1	1	SW_PUSH_6mm	SW19
1	+	SW_PUSH_6mm	SW20
1	-	SW_PUSH_6mm	SW21
1	0	SW_PUSH_6mm	SW22
1	.	SW_PUSH_6mm	SW23
1	^	SW_PUSH_6mm	SW24
1	Root	SW_PUSH_6mm	SW25
1	=	SW_PUSH_6mm	SW26
25	D	D_SOD-123	D1, D4, D5, D6, D7, D8, D9, D10 +17
1	绿	LED_0402_1005Metric	D2
1	红	LED_0402_1005Metric	D3
1	10uF	C_0402_1005Metric	C1
2	1K	R_0402_1005Metric	R1, R2
1	1.2K	R_0402_1005Metric	R3
2	100K	R_0402_1005Metric	R4, R5

Totally a calculator design files

The KiCad project lives in the 0x62b/totally-a-calculator repository on GitHub; these links point at the commit this page was built from.

Layoutpcb/yes_sir_this_is_a_calculator.kicad_pcb
Schematicpcb/yes_sir_this_is_a_calculator.kicad_sch
BOMbom.csv

Totally a calculator: common questions

What microcontroller does the Totally a calculator use?

The Totally a calculator is built around the RaspberryPi_Pico, from the RP2040/RP2350 family.

How big is the Totally a calculator PCB?

The Totally a calculator measures 81.4 × 148.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Totally a calculator?

63 components, from 37 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Totally a calculator design files?

From the 0x62b/totally-a-calculator repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Totally a calculator design in my own project?

The repository has no license, so all rights stay with 0x62b. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Totally a calculator without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.