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Usb midi clocker circuits

doctea·usb_midi_clocker_hardware·_backups/usb_midi_clocker circuits.kicad_pcb

Usb midi clocker circuits PCB layout, top view — open source NXP board by doctea

About the Usb midi clocker circuits PCB

Usb midi clocker circuits is an open source NXP PCB design by doctea, published on GitHub. It is a 2-layer board measuring 60.6 × 128.5 mm, with 22 components from 22 distinct parts.

Its main chip is the TL074, from the NXP family. Other key parts include the LM4040DBZ-5. By type, the board carries 5 capacitors, 4 connectors, 3 ICs, 3 switches, 2 diodes and 1 resistor.

It belongs with the audio designs in this gallery.

From the project

IMPORTANT: DO NOT USE THESE FOR ANYTHING YET, THEY ARE VERY MUCH PROTOTYPES AND HAVE SOME PROBLEMS!!!!

IMPORTANT: DO NOT USE THESE FOR ANYTHING YET, THEY ARE VERY MUCH PROTOTYPES AND HAVE SOME PROBLEMS!!!!

Files for PCB modules for use by usbmidiclocker project.

- IMPROVE: reduce size of jack holes to make a snugger fit with less wobble? - IMPROVE: Some nice panel graphics!

- DONE: FIX: Replace the voltage regulator with one that will actually be able to deliver enough amps to power the screen and Teensy facepalm - ~~Can work around this for the moment by connecting directly to 5v Eurorack power with eg Dupont cables~~ - FIX: Fix/bridge/remove power diode that prevents power from USB going…

Main components on the Usb midi clocker circuits

TL074LM4040DBZ-5

Usb midi clocker circuits bill of materials (BOM)

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

QtyPartRefs
1
TL074
L78L05_TO92
U1
1
TL074
Teensy4.1
U2
1
LM4040DBZ-5
TFT_320x240
U3
1
SD card breakout
J1
1
CONN_02X05_ODD_EVEN
USB power
J2
1
PJS008U-3000-0
J3
1
USB Host header
J4
1
8 pin header
CV_INPUT_I2C_EXPANDER_MAIN1
1
16 pin header
GATE_OUTPUT_EXPANDER1
1
20 pin header
MIDI_EXPANDER_MAIN1
1
Eurorack power header
POWER1
1
Rotary_Encoder_Switch
SW1
1
SW_Push_Back
SW2
1
SW_Push_Select
SW3
1
1N4148
D1
1
1N5817
D+12V1
1
C_Small
C3
1
100NF
C_Polarized_Small
C5
1
100NF
10uF
C6
1
100NF
1uF
C7
Show 2 more
QtyPartRefs
1
10UF
C_Small
C8
1
10K
100R
R1

Usb midi clocker circuits design files

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

Usb midi clocker circuits: common questions

What microcontroller does the Usb midi clocker circuits use?

The Usb midi clocker circuits is built around the TL074, from the NXP family.

How big is the Usb midi clocker circuits PCB?

The Usb midi clocker circuits measures 60.6 × 128.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Usb midi clocker circuits?

22 components, from 22 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 Usb midi clocker circuits design files?

From the doctea/usb_midi_clocker_hardware 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 Usb midi clocker circuits design in my own project?

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

Can I test firmware for the Usb midi clocker circuits without the hardware?

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

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