HardLabs

Nespole

coddingtonbear·nespole·hardware/nespole.kicad_pcb

Nespole PCB layout, top view — open source AVR/Arduino board by coddingtonbear

About the Nespole PCB

Nespole is an open source AVR/Arduino PCB design by coddingtonbear, published on GitHub. It is a 2-layer board measuring 87.9 × 54.9 mm, with 50 components from 29 distinct parts.

Its main chip is the ATMEGA328PB-A, from the AVR/Arduino family. Other key parts include the MAX6675, CH340G and AS1108. By type, the board carries 16 capacitors, 16 resistors, 6 connectors, 4 ICs, 2 transistors and 2 diodes.

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

From the project

Arduino-hacked laminator controller allowing one to adapt their cheap laminator to heat to a configurable temperature.

Need to control your laminator's temperature precisely because you use it for performing temperature-specific things like applying photosensitive dry film to PCBs or trying out the toner transfer method? This lets you do that.

AmazonBasics Thermal Laminator; ~$21 as of this writing. 120VAC to 5VDC transformer; ~$5 MAX6675 and K-Type thermocouple; ~$5 -- you'll need to remove the chip and mounting pins from the little PCB for attaching to the final board. ATMega328pb microcontroller; ~$2 -- an ATMega328p would probably work just as well, but you may need to double-check the pinouts.…

Nespole, from the project README
From the project README

Main components on the Nespole

ATMEGA328PB-AMAX6675CH340GAS1108

Nespole bill of materials (BOM)

50 components, 29 distinct parts.

QtyPartRefs
1
ATMEGA328PB-A
IC1
1
MAX6675
U1
1
CH340G
U2
1
AS1108
U3
1
MOSFET_N_CH
Q1
1
MOSFET_P_CH
Q2
1
Crystal_GND24
Y1
1
Screw_Terminal_1x02
J1
3
Screw_Terminal_1x02
J2, J4, J5
1
Screw_Terminal_1x05
J3
1
USB_OTG
P1
1
CA56-12
AFF1
1
Jumper_NO_Small
JP1
1
Rotary_Encoder_Switch
SW1
1
D
D1
1
LED_RGB
D2
10
0.1u
C1, C2, C4, C6, C8, C9, C10, C11 +2
2
22p
C3, C5
1
10m
C7
1
0.1uF
C12
Show 9 more
QtyPartRefs
1
10u
C13
1
22m
C16
1
270
R1
7
10k
R2, R3, R5, R7, R8, R9, R13
1
0
R4
3
1k
R6, R14, R15
2
2.2k
R10, R11
1
9.53k
R12
1
1.5k
R16

Nespole design files

The KiCad project lives in the coddingtonbear/nespole repository on GitHub; these links point at the commit this page was built from.

Nespole: common questions

What microcontroller does the Nespole use?

The Nespole is built around the ATMEGA328PB-A, from the AVR/Arduino family.

How big is the Nespole PCB?

The Nespole measures 87.9 × 54.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nespole?

50 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Nespole design files?

From the coddingtonbear/nespole repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Nespole design in my own project?

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

Can I test firmware for the Nespole without the hardware?

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

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