HardLabs

MEP MAXI 85V-1 REV 2 Keypad

JGilcreast·MetalHead·hardware/keypad/keypad.kicad_pcb

MEP MAXI 85V-1 REV 2 Keypad PCB layout, top view — open source AVR/Arduino board by JGilcreast

About the MEP MAXI 85V-1 REV 2 Keypad PCB

MEP MAXI 85V-1 REV 2 Keypad is an open source AVR/Arduino PCB design by JGilcreast, published on GitHub. It is a 4-layer board measuring 209 × 97.3 mm, with 203 components from 77 distinct parts.

Its main chip is the ATMEGA328-AU, from the AVR/Arduino family. Other key parts include the LM74700QDDFRQ1, AMS1117-3.3, USBLC6-2SC6, FT232RL and 74LVC1G14GW-Q100,1. By type, the board carries 67 capacitors, 56 resistors, 28 switches, 25 ICs, 13 test points and 5 transistors.

From the project

An opensource firmware and software drop-in replacement for the 85V Automatic Stirrup Bender by CRS Specialties Inc. ...short story behind the name...

An opensource firmware and software drop-in replacement for the 85V Automatic Stirrup Bender by CRS Specialties Inc. ...short story behind the name...

To build a pristine copy of the firmware binary:.gitignore

cd MetalHead\firmware\interface-board-zephyr rmdir /q /s application\build Go back to CLion and reload West Build, flash, etc

This is a simple unpolished version of the HMI app that will eventually run on the orange pi. This version is mostly for implementation and testing purposes. ### HMI The polished version of the HMI app. This app version be able to accomplish the following…

MEP MAXI 85V-1 REV 2 Keypad, from the project README
From the project README

Main components on the MEP MAXI 85V-1 REV 2 Keypad

LM74700QDDFRQ1AMS1117-3.3USBLC6-2SC6ATMEGA328-AUFT232RL74LVC1G14GW-Q100,1SN74HCS4075DRNC7SZ00M5XLMC555CMX/NOPBSN74HC14PWRPCF8575DBRSN74LVC2G14DBV74LVC1G32GW,125NC7SZ08M5X

MEP MAXI 85V-1 REV 2 Keypad bill of materials (BOM)

203 components, 77 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
LM74700QDDFRQ1
U101, U202
1
AMS1117-3.3
U201
1
USBLC6-2SC6
U203
1
ATMEGA328-AU
U204
1
FT232RL
U205
2
74LVC1G14GW-Q100,1
U301, U501
3
SN74HCS4075DR
U302, U304, U307
2
NC7SZ00M5X
U303, U305
2
LMC555CMX/NOPB
U306, U503
5
SN74HC14PWR
U401, U403, U406, U408, U409
2
PCF8575DBR
U402, U407
1
SN74LVC2G14DBV
U404
1
74LVC1G32GW,125
U405
1
NC7SZ08M5X
U502
2
DMT6007LFG
Q101, Q201
2
PMV30XPEAR
Q301, Q501
1
BSS138 JI
Q502
1
16MHz
Y201
1
CONN_02X10_ODD_EVEN
Conn_02x05_Odd_Even
J101
1
USB_C_Receptacle_USB2.0_16P
J201
Show 57 more
QtyPartRefs
1
500mA
F201
1
DISPLAY
SW401
1
COMP
SW402
1
INFEED
SW403
1
HEAD_POS
SW404
1
FTI
SW405
1
SHEAR
SW406
1
PAUSE
SW407
1
1
SW408
1
RUN
SW409
1
UP
SW410
1
ENTER
SW411
1
2
SW412
1
3
SW413
1
PLUS
SW414
1
LEFT
SW415
1
MENU
SW416
1
RIGHT
SW417
1
4
SW418
1
5
SW419
1
6
SW420
1
MINUS
SW421
1
MEMORY
SW422
1
DOWN
SW423
1
DECIMAL
SW424
1
7
SW425
1
8
SW426
1
9
SW427
1
0
SW428
1
Red
TP101
3
Black
TP102, TP303, TP505
1
125-00868
TP201
1
125-00869
TP202
4
White
TP301, TP501, TP502, TP504
3
Yellow
TP302, TP304, TP503
1
Orange
D201
1
RED
D202
1
GREEN
D203
1
RED
D501
1
330R
FB201
4
22uF
C101, C102, C201, C203
2
100nF
C103, C204
8
100nF
C202, C205, C206, C207, C208, C211, C212, C213
2
22pF
C209, C210
1
4.7uF
C214
48
1uF
C301, C302, C303, C304, C305, C306, C307, C308 +40
1
0.1uF
C309
1
100uF
C504
39
10K
R101, R102, R207, R301, R401, R402, R403, R404 +31
2
5K1
R201, R202
2
130R
R203, R212
7
270R
R204, R205, R206, R208, R209, R210, R211
1
30R
R213
1
22K
R302
1
1M
R303
2
47K
R304, R503
1
130
R501

MEP MAXI 85V-1 REV 2 Keypad design files

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

MEP MAXI 85V-1 REV 2 Keypad: common questions

What microcontroller does the MEP MAXI 85V-1 REV 2 Keypad use?

The MEP MAXI 85V-1 REV 2 Keypad is built around the ATMEGA328-AU, from the AVR/Arduino family.

How big is the MEP MAXI 85V-1 REV 2 Keypad PCB?

The MEP MAXI 85V-1 REV 2 Keypad measures 209 × 97.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the MEP MAXI 85V-1 REV 2 Keypad?

203 components, from 77 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 MEP MAXI 85V-1 REV 2 Keypad design files?

From the JGilcreast/MetalHead 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 MEP MAXI 85V-1 REV 2 Keypad design in my own project?

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

Can I test firmware for the MEP MAXI 85V-1 REV 2 Keypad without the hardware?

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

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