HardLabs

Nlink cam

nspired-Hackers·nternet-Link·v4/hardware/kicad/nlink-cam/nlink-cam.kicad_pcb

Nlink cam PCB layout, top view — open source RP2040/RP2350 board by nspired-Hackers

About the Nlink cam PCB

Nlink cam is an open source RP2040/RP2350 PCB design by nspired-Hackers, published on GitHub. It is a 4-layer board measuring 60 × 12.5 mm, with 40 components from 32 distinct parts.

Its main chip is the ESP32-C3-MINI-1-N4, from the RP2040/RP2350 family. Other key parts include the CP2102N-A02-GQFN24, TLV62569DBV and USBLC6-2SC6. By type, the board carries 17 capacitors, 10 resistors, 4 ICs, 4 connectors, 2 inductors and 1 antenna.

It belongs with the iot & wireless and usb & debug tools designs in this gallery.

From the project

Wi-Fi, AI chat, and camera module for TI-Nspire calculators. Custom ESP32 PCBs + firmware. (Yes, 'nternet' is intentional, Nspire community naming.)

Turn a TI-Nspire graphing calculator into a networked handheld terminal. It adds Wi-Fi, an AI chat/tutor, a camera that reads and solves problems, and a microSD card, all through a tiny plug-in device. No calculator modification.

V4 is a ground-up rewrite of the firmware, the calculator software, the communication protocol, and the hardware, with two board designs: a full camera stick and a tiny chat-only "stealth" version.

Nlink cam, from the project README
From the project README

Main components on the Nlink cam

ESP32-C3-MINI-1-N4CP2102N-A02-GQFN24TLV62569DBVUSBLC6-2SC6

Nlink cam bill of materials (BOM)

40 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-C3-MINI-1-N4
ESP32-S3-PICO-1-N8R8
U1
1
CP2102N-A02-GQFN24
U3
1
TLV62569DBV
U4
1
USBLC6-2SC6
U5
1
mini-B male plug — see PCB-DESIGN.md options
USB_MiniB_PLUG_to_calc
J1
1
OV5640_FPC_24pin
J2
1
microSD
J3
1
PROG_PADS_TC2030
J4
1
2450AT18B100
ANT1
1
PWR_SW
SW1
1
LED_STATUS
D1
1
2.2UH
2.2uH
L1
1
0R-placeholder
L2
1
100N
100n
C1
1
4.7U
4.7u
C2
1
10U
10u
C3
1
22U
22u
C4
1
100N
22u
C5
1
100N
100u
C6
1
10U
100u
C7
Show 12 more
QtyPartRefs
3
10u
C8, C9, C17
3
100n
C10, C14, C15
2
1u
C11, C16
2
DNP
C12, C13
1
10k
R1
1
22.1K
453k
R2
1
47.5K
100k
R3
1
453K
4.7k
R4
1
100K
4.7k
R5
3
10K
10k
R6, R7, R9
1
470
10k
R8
1
10K
470
R10

Nlink cam design files

The KiCad project lives in the nspired-Hackers/nternet-Link repository on GitHub; these links point at the commit this page was built from.

Nlink cam: common questions

What microcontroller does the Nlink cam use?

The Nlink cam is built around the ESP32-C3-MINI-1-N4, from the RP2040/RP2350 family.

How big is the Nlink cam PCB?

The Nlink cam measures 60 × 12.5 mm, has 4 copper layers and is 1 mm thick.

How many components are on the Nlink cam?

40 components, from 32 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 Nlink cam design files?

From the nspired-Hackers/nternet-Link 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 Nlink cam design in my own project?

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

Can I test firmware for the Nlink cam 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.

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