HardLabs

Main board

AllenNeuralDynamics·harp.device.lickety-split·hardware/board/main_board/main_board.kicad_pcb

Main board layout, top view — open source RP2040/RP2350 board by AllenNeuralDynamics

About the Main board

Main board is an open source RP2040/RP2350 PCB design by AllenNeuralDynamics, published on GitHub under the MIT license. It is a 4-layer board measuring 80 × 50 mm, with 183 components from 75 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the 74LVCH2T45DC, TPD2EUSB30, ADUM4160, W25Q16JVUXIQ and ADA4891-4. By type, the board carries 78 capacitors, 70 resistors, 17 ICs, 6 connectors, 4 diodes and 3 inductors.

From the project

0360: an ephys-compliant capacitive lick detector

An ephys-compliant lick detector based on measured change in capacitance.

These printed circuit boards are made on-demand.

You will also need: Pololu 6-Pin SH Cable, 25cm long Stainless Steel Lick Tube, 18 Gauge (any conductive lick tube will work!) 3D Printed Enclosure Walls and Laser Cut Lids right click the component to export each part.

Once you receive boards, you will need to upload the firmware from the latest release.

Main board, from the project README
From the project README

Main components on the Main board

74LVCH2T45DCTPD2EUSB30ADUM4160RP2040W25Q16JVUXIQADA4891-4REF2025TS5A9411DCKRADA4891-2LM27762ADS7049MAX4564EKArt6150b-33gqwADA4891-1MCP16312x-xMNY

Main board bill of materials (BOM)

183 components, 75 distinct parts.

QtyPartRefs
1
74LVCH2T45DC
Nexperia USA Inc.
U1
1
TPD2EUSB30
Texas Instruments
U2
1
ADUM4160
Analog Devices Inc.
U3
1
RP2040
Raspberry Pi
U4
1
W25Q16JVUXIQ
Winbond Electronics
U5
1
ADA4891-4
Analog Devices Inc.
U6
1
REF2025
Texas Instruments
U8
1
TS5A9411DCKR
Texas Instruments
U9
1
ADA4891-2
Analog Devices Inc.
U10
1
LM27762
Texas Instruments
U11
1
ADS7049
Texas Instruments
U13
3
MAX4564EKA
Analog Devices Inc./Maxim Integrated
U14, U15, U18
1
rt6150b-33gqw
Richtek USA Inc.
U16
1
ADA4891-1
Analog Devices Inc.
U17
1
MCP16312x-xMNY
Microchip Technology
U19
1
ECS-TXO-2016
ECS Inc.
X1
1
Conn_01x06_Female
JST Sales America Inc.
J1
1
Conn_01x03_Male
n/a
J2
1
AudioJack3
CUI Devices
J4
1
USB_C_Receptacle_USB2.0
JAE Electronics
J5
Show 55 more
QtyPartRefs
1
Barrel_Jack_Switch
CUI Devices
J6
1
Conn_Coaxial
TE Connectivity Linx
J7
1
MountingHole_Pad
Keystone Electronics
H1
1
~
Würth Elektronik
SW1
1
SW_DIP_x02
SW2
1
TestPoint
n/a
TP1
2
LED
SunLED
D1, D2
2
D_TVS
Nexperia USA Inc.
D3, D4
1
L_Coupled_1423
TDK Corporation
L1
1
15uH
Würth Elektronik
L2
1
2.2uH
Abracon LLC
L3
37
100nF
Walson Technology Corporation
C1, C2, C3, C4, C5, C6, C7, C12 +29
8
1uF
Murata Electronics
C8, C9, C10, C21, C27, C41, C53, C56
12
10uF
Murata Electronics
C11, C20, C22, C23, C39, C45, C67, C76 +4
4
160pF
Murata Electronics
C30, C31, C68, C72
5
1nF
Murata Electronics
C32, C35, C36, C57, C58
2
120pF
Murata Electronics
C33, C34
2
22uF
Samsung Electro-Mechanics
C40, C82
1
4.7uF
Samsung Electro-Mechanics
C42
4
2.2uF
Murata Electronics
C43, C44, C50, C51
1
300pF
Murata Electronics
C52
2
130pF
Murata Electronics
C73, C74
2
1K05
Yageo
R1, R24
2
5K1
Yageo
R2, R3
4
24
Yageo
R4, R5, R6, R7
7
4K7
KOA Speer Electronics, Inc.
R8, R16, R17, R25, R45, R60, R61
3
10K
KOA Speer Electronics, Inc.
R9, R57, R58
2
27
Yageo
R10, R11
2
680
Yageo
R12, R13
1
52K3
Stackpole Electronics Inc
R14
1
10K
YAGEO
R15
2
127K
Yageo
R18, R23
1
976
Yageo
R19
1
97K6
Yageo
R20
2
62K
Yageo
R21, R22
1
102K
Yageo
R26
1
10K0
Stackpole Electronics Inc
R27
3
49.9
Yageo
R28, R29, R44
2
100
Yageo
R30, R31
1
54K9
Panasonic Electronic Components
R32
1
53K6
Panasonic Electronic Components
R33
2
51K
Yageo
R34, R35
2
127
Yageo
R42, R43
1
133
Yageo
R46
1
113
Yageo
R47
2
8K87
Yageo
R48, R72
11
1K00
Yageo
R49, R51, R52, R53, R54, R56, R62, R63 +3
1
2K2
Yageo
R50
5
100K
Yageo
R55, R59, R66, R71, R76
1
133K
TE Connectivity Passive Product
R64
1
1K02
Yageo
R65
1
10K2
Yageo
R67
1
137
Panasonic Electronic Components
R68
1
121K
Yageo
R69
1
115
Panasonic Electronic Components
R73

Main board design files

The KiCad project lives in the AllenNeuralDynamics/harp.device.lickety-split repository on GitHub; these links point at the commit this page was built from.

Main board: common questions

What microcontroller does the Main board use?

The Main board is built around the RP2040, from the RP2040/RP2350 family.

How big is the Main board?

The Main board measures 80 × 50 mm, has 4 copper layers and is 1.567 mm thick.

How many components are on the Main board?

183 components, from 75 distinct parts. The full bill of materials is listed on this page.

Where can I download the Main board design files?

From the AllenNeuralDynamics/harp.device.lickety-split repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Main board design in my own project?

Yes, under the terms of its MIT license, which AllenNeuralDynamics chose for the repository.

Can I test firmware for the Main board 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.

More boards in harp.device.lickety-split

Similar boards