HardLabs

Banjobox

AndrewJ-25·Banjobox·pcb/banjobox.kicad_pcb

Banjobox PCB layout, top view — open source board by AndrewJ-25

About the Banjobox PCB

Banjobox is an open source PCB design by AndrewJ-25, published on GitHub. It is a 2-layer board measuring 74.7 × 89.9 mm, with 22 components from 14 distinct parts.

Other key parts include the SHT31-DIS, ER_OLEDM0.91_1x-I2C, LM1117T-3.3, MOUDLE-SEEEDUINO-XIAO and PAM8302AAD. By type, the board carries 8 capacitors, 5 ICs, 4 test points, 3 resistors and 1 switch.

It belongs with the sensors, displays & leds and test & measurement designs in this gallery.

From the project

A case for storing string instruments. Includes temperature sensor, humidity sensor and tuner.

Banjobox is a banjo case with a built in tuner and temperature/ humidity sensor. I designed it to store a mountain banjo I made but the case can be modified to accomodate other string instruments.

Purchasing a banjo case is difficult, especially as shape varies a lot. Banjobox is low cost (plywood, softwood timber) and super customiseable!

Banjobox features a Seeed Studios Xiao RP2040 running MicroPython. UI consists of a rotary encoder and 0.91" OLED display. You can select different notes to be played through the speaker to tune your banjo.

Banjobox, from the project README
From the project README

Main components on the Banjobox

SHT31-DISER_OLEDM0.91_1x-I2CLM1117T-3.3MOUDLE-SEEEDUINO-XIAOPAM8302AAD

Banjobox bill of materials (BOM)

22 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SHT31-DIS
U1
1
ER_OLEDM0.91_1x-I2C
U2
1
LM1117T-3.3
U3
1
MOUDLE-SEEEDUINO-XIAO
U4
1
PAM8302AAD
U5
1
10K
RV1
1
RotaryEncoder_Switch
SW1
4
TestPoint
TP1, TP2, TP3, TP4
3
100nF
C1, C2, C6
3
10uF
C3, C4, C8
1
100uF
C5
1
1uF
C7
2
4.7k
R1, R2
1
100k
R3

Banjobox design files

The KiCad project lives in the AndrewJ-25/Banjobox repository on GitHub; these links point at the commit this page was built from.

Banjobox: common questions

How big is the Banjobox PCB?

The Banjobox measures 74.7 × 89.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Banjobox?

22 components, from 14 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 Banjobox design files?

From the AndrewJ-25/Banjobox 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 Banjobox design in my own project?

The repository has no license, so all rights stay with AndrewJ-25. Use it as a reference, and ask the author before reusing the design.

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