HardLabs

Dodohand

dodohand·dodohand·sch_and_pcb/kicad_fingers.net

This repository ships a schematic but no board layout.
Simulate this board

About the Dodohand PCB

Dodohand is an open source NXP PCB design by dodohand, published on GitHub under the GPL-3.0 license. It is a board, with 63 components from 29 distinct parts.

Its main chip is the TEENSY2P0, from the NXP family. Other key parts include the LIN_REG, PCA9306 and PCA9655E. By type, the board carries 22 connectors, 18 resistors, 5 capacitors, 4 ICs, 4 crystals and 4 diodes.

From the project

Please see the GeekHack thread on this topic for details.

Please see the GeekHack thread on this topic for details.

http://geekhack.org/index.php?topic=41422.0

This project is built around the Teensy 2.0 and is currently using debug tools from PJRC. Please find the hid_listen tool from PJRC in order to receive the debug messages from the test DodoHand firmware.

The DataHand keyboard is a design that I have come to rely heavily upon and do not want to be without. It allows me to type pain-free for hours at a time, day after day. DataHand Systems has been out of production for some 10 years now, and their website has even recently been taken down…

Main components on the Dodohand

TEENSY2P0LIN_REGPCA9306PCA9655E

Dodohand bill of materials (BOM)

63 components, 29 distinct parts.

QtyPartRefs
1
TEENSY2P0
U1
1
LIN_REG
U2
1
PCA9306
U3
1
PCA9655E
U4
1
PNP
Q1
4
RF5S
X1, X2, X3, X4
1
EP_BOT
J1
1
EP_TOP
J2
2
AUX
J3, J4
1
SJ-43514
J5
1
THM_TOP
J6
1
THM_BOT
J7
2
ALTLED
J8, J9
13
TST
P1, P2, P3, P4, P5, P6, P7, P8 +5
1
AuxVcc
B1
1
Aux3v3
B2
2
NOLVI2C
B3, B4
1
SPST
SW1
4
LED
D10, D11, D12, D13
1
4.7
C1
Show 9 more
QtyPartRefs
1
4.7uF
C2
3
0.1uF
C3, C4, C5
1
200k
R1
4
2.2k
R2, R9, R15, R16
2
470
R3, R4
4
2.49k
R5, R6, R7, R8
4
1k
R10, R11, R12, R13
2
5k
R14, R17
1
10k
R18

Dodohand design files

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

Dodohand: common questions

What microcontroller does the Dodohand use?

The Dodohand is built around the TEENSY2P0, from the NXP family.

How many components are on the Dodohand?

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

Where can I download the Dodohand design files?

From the dodohand/dodohand repository on GitHub, which has a netlist; the links under Design files point to each one.

Can I use the Dodohand design in my own project?

Yes, under the terms of its GPL-3.0 license, which dodohand chose for the repository.

Can I test firmware for the Dodohand 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.

Similar boards