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Bahayshield ultra

cikeyz·bahayshield-ultra·pcb/rev-a/BahayShield-ULTRA-RevA-Manual.kicad_pcb

Bahayshield ultra PCB layout, top view — open source board by cikeyz
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About the Bahayshield ultra PCB

Bahayshield ultra is an open source PCB design by cikeyz, published on GitHub under the MIT license. It is a 2-layer board measuring 125 × 125 mm, with 64 components from 51 distinct parts.

By type, the board carries 20 connectors, 17 resistors, 14 test points, 6 capacitors, 3 fuses and 2 diodes.

It belongs with the sensors designs in this gallery.

From the project

Offline flood and typhoon preparedness controller for Arduino Mega 2560 Pro: ultrasonic water level, BME280 pressure trend, TRI scoring, staged alerts, low-voltage relay cutoff.

KiCad motherboard for BahayShield ULTRA. It sockets an Arduino Mega 2560 Pro on 100-mil headers and brings out I2C modules, relay logic, load path, indicators, and power protection.

Local symbol and footprint libraries: rev-a/libraries/.

- Schematic covers the intended nets: MCU headers, I2C, relay inputs, load terminals, protection, bulk caps, TRI LEDs, buzzer drive. - Before ordering boards, re-run ERC/DRC on your KiCad version, confirm relay header order (GND IN1 IN2 VCC) and contact group (NO COM NC) against the module you hold, and check keep-outs against the printed enclosure. - This…

Bahayshield ultra bill of materials (BOM)

64 components, 51 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
2N2222_BUZZER_LOW_SIDE_EBC
Q1
1
MEGA_PRO_EMBED_CH340G___ATMEGA2560
J1
1
LCD_I2C
PD_BARREL_OR_PANEL_DC_IN
J2
1
RTC_I2C
PCB_TO_XL4015_INPUT
J3
1
KEYPAD_I2C
XL4015_OUTPUT_TO_PCB_5V00
J4
1
BMP280_OPTION
20X4_LCD_I2C_PANEL
J5
1
DS3231_AT24C32_MODULE_XH4
J6
1
BTN_LADDER_A1
BME280_5V_APPROVED_XH4
J7
1
PRESSURE_SIM_A0
PCF8574_KEYPAD_EXPANDER_XH4
J8
1
DIORAMA_HC_SR04_MAST_XH4
J9
1
A0_PRESSURE_SIM_10K_XH3
J10
1
REGULATED_5V_IN
PANEL_BTN1_MANUAL_CUT_XH2
J11
1
PANEL_STATUS_LEDS_G1_G2_Y_XH4
J12
1
ACTIVE_BUZZER_5V_XH2
J13
1
2CH_RELAY_MODULE_INPUT_GND_IN1_IN2_VCC_XH4
J14
1
RELAY1_CONTACT_NO_COM_NC
J15
1
LOW_VOLTAGE_DEMO_LOAD
J16
1
PANEL_POWER_LED_XH2
J17
1
PANEL_BTN2_VIEW_XH2
J18
1
PANEL_BTN3_ACK_RESET_XH2
J19
Show 31 more
QtyPartRefs
1
PANEL_ALERT_LEDS_O_R_ALERT_XH4
J20
1
F1A_INPUT_FUSE_5X20
F1
1
F1A_LOGIC_BRANCH
F2
1
F2A_ACTUATOR_BRANCH
F3
1
KCD11_MAIN_SWITCH_HARNESS
SW1
14
TestPoint
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +6
1
1N5822_REVERSE_PROTECTION
D1
1
1N4007_BUZZER_CLAMP
D3
1
470u_25V_MAIN_5V_BULK
C1
1
100u_ACT_BULK
C2
1
100n_5V_MAIN_CERAMIC
C3
1
100n_LOGIC_CERAMIC
C4
1
100n_RELAY_ACT_CERAMIC
C5
1
100n_I2C_SENSOR_CERAMIC
C6
1
4.7k_SDA_PULLUP
R1
1
4.7k_SCL_PULLUP
R2
1
1k_POWER_LED
R3
1
10k_A1_PULLDOWN
R4
1
1k_BTN_MANUAL_CUT
R5
1
2.2k_BTN_VIEW
R6
1
4.7k_BTN_ACK_RESET
R7
1
330_LED_G1
R8
1
330_LED_G2
R9
1
330_LED_Y
R10
1
330_LED_O
R11
1
330_LED_R
R12
1
330_LED_ALERT
R13
1
1k_BUZZER_BASE
R14
1
10k_RELAY1_IN_PULLUP_SAFE_OFF
R15
1
10k_RELAY2_IN_PULLUP_SAFE_OFF
R16
1
100k_BUZZER_BASE_PULLDOWN
R17

Bahayshield ultra design files

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

Bahayshield ultra: common questions

How big is the Bahayshield ultra PCB?

The Bahayshield ultra measures 125 × 125 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bahayshield ultra?

64 components, from 51 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 Bahayshield ultra design files?

From the cikeyz/bahayshield-ultra 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 Bahayshield ultra design in my own project?

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

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