HardLabs

MiniKers 2

Vulpxs-M·MiniKers_2·Controller_Version_1/Controller v1.1.kicad_pcb

MiniKers 2 PCB layout, top view — open source Nordic nRF board by Vulpxs-M

About the MiniKers 2 PCB

MiniKers 2 is an open source Nordic nRF PCB design by Vulpxs-M, published on GitHub. It is a 2-layer board measuring 74.5 × 52.1 mm, with 97 components from 55 distinct parts.

Its main chip is the Feather nRF52840 Express (Adafruit), from the Nordic nRF family. Other key parts include the C7972, C79274 and C92482. By type, the board carries 30 resistors, 21 test points, 18 capacitors, 9 diodes, 7 ICs and 4 transistors.

It belongs with the iot & wireless designs in this gallery.

From the project

self-powered automatic tool for energy generation

Self powered automatics with brushless motor and energy regeneration (as well as some smart IoT capability)

Main components on the MiniKers 2

Feather nRF52840 Express (Adafruit)C7972C79274C92482

MiniKers 2 bill of materials (BOM)

97 components, 55 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Feather nRF52840 Express (Adafruit)
U1
4
C7972
LMV321 (Texas Instruments)
U2, U5, U6, U7
1
C79274
OPA197IDR (Texas Instruments)
U3
1
C92482
DRV8313PWP (Texas Instruments)
U4
2
C8545
2N7002 (Changjiang Electronics Tech (CJ)) - 60V 115mA 200mW 7.5Ω@10V,500mA 2.5V@250μA N Channel SOT-23(SOT-23-3) MOSFETs ROHS
Q1, Q3
1
C10487
SI2301CDS-T1-GE3 (Vishay Intertech) - 20V 3.1A 860mW 112mΩ@4.5V,2.8A 1V@250μA P Channel SOT-23(SOT-23-3) MOSFETs ROHS
Q2
1
C260923
DMG4407SSS-13 (Diodes Incorporated) - 30V 9.9A 1.45W 11mΩ@20V,12A 3V@250μA P Channel SOIC-8_150mil MOSFETs ROHS
Q4
1
B2B-PH-K (JST)
J1
1
B4B-PH-K (JST)
J2
1
B5B-PH-K (JST)
J3
1
B3B-PH-K (JST)
J4
3
—
H1, H2, H3
1
C318884
5.1mm switch
SW1
1
C238130
5015 (Keystone) - _mcu_i2c_i2c_link.scl
TP1
1
C238130
5015 (Keystone) - i2c_tp._io_sda_link
TP2
1
C238130
5015 (Keystone) - _ref_buf_output_link
TP3
1
C238130
5015 (Keystone) - _hall_phases_1_link
TP4
1
C238130
5015 (Keystone) - _hall_rc[1]_output_link
TP5
1
C238130
5015 (Keystone) - _hall_phases_2_link
TP6
1
C238130
5015 (Keystone) - _hall_rc[2]_output_link
TP7
Show 35 more
QtyPartRefs
1
C238130
5015 (Keystone) - _hall_phases_3_link
TP8
1
C238130
5015 (Keystone) - _hall_rc[3]_output_link
TP9
1
C238130
5015 (Keystone) - _vsense_output_link
TP10
1
C238130
5015 (Keystone) - _isense_out_link
TP11
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_fault_link
TP12
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_en_link.1
TP13
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_en_link.2
TP14
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_en_link.3
TP15
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_in_link.1
TP16
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_in_link.2
TP17
1
C238130
5015 (Keystone) - _mcu_gpio_bldc_in_link.3
TP18
1
C238130
5015 (Keystone) - _curr_amp[1]_output_link
TP19
1
C238130
5015 (Keystone) - _curr_amp[2]_output_link
TP20
1
C238130
5015 (Keystone) - _curr_amp[3]_output_link
TP21
1
C282396
ZMM5245B_R1_10001 (PANJIT International) - 100nA@11V 16Ω Single 14.25V~15.75V 500mW 15V LL-34 Zener Diodes ROHS
D1
1
C8055
ZMM3V0-M (ST(Semtech)) - 4μA@1V 85Ω Single 2.8V~3.2V 500mW 3V LL-34 Zener Diodes ROHS
D2
6
C9808
LL4148 (ST(Semtech)) - 75V +175℃@(Tj) 500mW 1V@10mA 4ns 5μA@75V 200mA LL-34 Switching Diode ROHS
D3, D4, D5, D6, D7, D8
1
C261062
TCLLZ3V6TR (Tak Cheong) - 10μA@1V ±5% 100Ω Single 500mW 3.6V LL34 Zener Diodes ROHS
D9
6
C14663
CC0603KRX7R9BB104 (YAGEO) - 50V 100nF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS
C1, C14, C15, C16, C17, C18
6
C1596
0603B153K500NT (FH(Guangdong Fenghua Advanced Tech)) - 50V 15nF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS
C2, C3, C4, C5, C6, C7
3
C28233
CL21B104KCFNNNE (Samsung Electro-Mechanics) - 100V 100nF X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS
C8, C10, C11
1
C440198
GRM21BR61H106KE43L (Murata Electronics) - 50V 10uF X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS
C9
1
C1623
CL10B474KA8NNNC (Samsung Electro-Mechanics) - 25V 470nF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS
C12
1
C57112
0603B103K500NT (FH(Guangdong Fenghua Advanced Tech)) - 50V 10nF X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHS
C13
5
C25804
0603WAF1002T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 10kΩ 0603 Chip Resistor - Surface Mount ROHS
R1, R12, R15, R17, R18
8
C23162
0603WAF4701T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 4.7kΩ 0603 Chip Resistor - Surface Mount ROHS
R2, R3, R6, R7, R8, R9, R10, R11
1
C25808
0603WAF1203T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 120kΩ 0603 Chip Resistor - Surface Mount ROHS
R4
3
C25803
0603WAF1003T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 100kΩ 0603 Chip Resistor - Surface Mount ROHS
R5, R19, R20
1
C4410
1206W4F1001T5 (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/4W Thick Film Resistors 200V -55℃~+155℃ 1kΩ 1206 Chip Resistor - Surface Mount ROHS
R13
1
C23231
0603WAF6802T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 68kΩ 0603 Chip Resistor - Surface Mount ROHS
R14
1
C305115
RTT25R050FTE (RALEC) - ±1% 1W Thick Film Resistors 200V ±500ppm/℃ -55℃~+155℃ 0.05Ω 2512 Chip Resistor - Surface Mount ROHS
R16
3
C474258
25121WJ050LT4E (UNI-ROYAL(Uniroyal Elec)) - ±5% 1W Thick Film Resistors 200V ±800ppm/℃ -55℃~+155℃ 50mΩ 2512 Chip Resistor - Surface Mount ROHS
R21, R24, R27
3
C23150
0603WAF3903T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 390kΩ 0603 Chip Resistor - Surface Mount ROHS
R22, R25, R28
3
C4184
0603WAF2002T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 20kΩ 0603 Chip Resistor - Surface Mount ROHS
R23, R26, R29
1
C25811
0603WAF2003T5E (UNI-ROYAL(Uniroyal Elec)) - ±1% 1/10W Thick Film Resistors 75V ±100ppm/℃ -55℃~+155℃ 200kΩ 0603 Chip Resistor - Surface Mount ROHS
R30

MiniKers 2 design files

The KiCad project lives in the Vulpxs-M/MiniKers_2 repository on GitHub; these links point at the commit this page was built from.

MiniKers 2: common questions

What microcontroller does the MiniKers 2 use?

The MiniKers 2 is built around the Feather nRF52840 Express (Adafruit), from the Nordic nRF family.

How big is the MiniKers 2 PCB?

The MiniKers 2 measures 74.5 × 52.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MiniKers 2?

97 components, from 55 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 MiniKers 2 design files?

From the Vulpxs-M/MiniKers_2 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 MiniKers 2 design in my own project?

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

Can I test firmware for the MiniKers 2 without the hardware?

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

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