HardLabs

MTouch Test

drewsum·mTouch_Test·mTouch_Test/mTouch_Test.kicad_pcb

MTouch Test PCB layout, top view — open source PIC board by drewsum

About the MTouch Test PCB

MTouch Test is an open source PIC PCB design by drewsum, published on GitHub. It is a 2-layer board measuring 65.1 × 43.9 mm, with 88 components from 35 distinct parts.

Its main chip is the PIC18LF67K40-I_PT, from the PIC family. Other key parts include the ISO7331C, 74LVC1G17, FT234XD, TPD3S014DBVR and TL331. By type, the board carries 30 resistors, 26 capacitors, 8 ICs, 8 test points, 8 diodes and 3 connectors.

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

From the project

Small PCB for playing around with PIC mTouch capacitive touch methods and USB serial ports

Firmware for U201 written in MPLABX, built using microchip's XC8 compiler

8/12/2018: PCB has been ordered via OSHPark

Main components on the MTouch Test

PIC18LF67K40-I_PTISO7331C74LVC1G17FT234XDTPD3S014DBVRTL33174LVC1G86MCP1700-3302E

MTouch Test bill of materials (BOM)

88 components, 35 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
PIC18LF67K40-I_PT
U201
1
ISO7331C
U301
1
74LVC1G17
U401
1
FT234XD
U402
1
TPD3S014DBVR
U403
1
TL331
U501
1
74LVC1G86
U502
1
MCP1700-3302E
U601
1
BSS214NW
Q501
1
SI2319CDS
Si2319CDS
Q601
1
732-5960-1
USB_B_Micro
J401
1
Prog
J501
1
SC237
Barrel_Jack_Switch
J601
5
TP
TP201, TP202, TP203, TP204, TP205
1
UART
TP301
2
TP
TP402, TP601
2
BZT52C5V6S
Z501, Z601
6
511-1310-1
Red
D201, D202, D203, D204, D205, D501
1
511-1305-1
Yellow
D401
1
511-1308-1
Green
D601
Show 15 more
QtyPartRefs
1
732-1593-1
600R 0.5A
L401
15
0.1UF
0.1uF
C201, C204, C301, C303, C401, C402, C404, C406 +7
2
10NF
10nF
C202, C205
2
1NF
1nF
C203, C206
1
56000PF
56000pF
C302
1
4.7UF
4.7uF
C403
2
47PF
47pF
C405, C407
1
100UF
100uF
C601
2
1UF
1uF
C602, C603
13
10K
10k
R201, R301, R302, R303, R304, R305, R306, R401 +5
5
220
R202, R203, R204, R205, R206
8
1k
R207, R208, R209, R210, R211, R404, R507, R602
2
27
R402, R403
1
0
R504
1
10
R506

MTouch Test design files

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

MTouch Test: common questions

What microcontroller does the MTouch Test use?

The MTouch Test is built around the PIC18LF67K40-I_PT, from the PIC family.

How big is the MTouch Test PCB?

The MTouch Test measures 65.1 × 43.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MTouch Test?

88 components, from 35 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 MTouch Test design files?

From the drewsum/mTouch_Test repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the MTouch Test design in my own project?

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

Can I test firmware for the MTouch Test without the hardware?

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

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