Design Review and Corrections

Thought for 1 min 31 sec

flux

Yes—you can program this board. You have two options wired to the ATmega1284P:

JTAG for full debug via J1

Target: U4 (ATmega1284P) JTAG pins are already connected.
Typical tool: Atmel-ICE or compatible JTAG programmer/debugger.
J1 pin map (from your schematic):
- 1 TCK → U4 PC2
- 5 TMS → U4 PC3
- 3 TDO → U4 PC4
- 9 TDI → U4 PC5
- 6 nSRST → U4 ~RESET
- 2/10 GND → GND
- 4 VREF → Target VCC sense (board 5 V rail)
- 7 VCC → Board 5 V rail (do not back-power unless your programmer supports/you intend to)

AVR ISP (2×3) via J2

For bootloading/flash programming (no on-chip debug).
J2 pin map (as wired in your design; series protection resistors inline):
- 1 → U4 PB6 via R3
- 3 → U4 PB7 via R2
- 4 → U4 PB5 via R1
- 5 → U4 ~RESET
- 2 → VCC (target 5 V reference)
- 6 → GND

Power during programming

The MCU VCC is on the 5 V rail (Net 1). You can power the board from its normal supply (for example the 12 V input at 12V / 12Vp through the regulators), or let your programmer power the target if it supports it. Ensure the programmer’s VTref matches your target voltage (5 V here), and avoid back-powering both ways at once.

Which should you use?

Use JTAG on J1 if you want breakpoints, single-step, and full debug.
Use ISP on J2 for quick firmware flashing/bootloader work.

If you want, I can also label the J2 pins on your silkscreen or add a keyed box header to make cable orientation fool-proof.

Silkscreen J2 pins

Select keyed ISP header

Add 5 V indicator LED

Define JTAG net class

C15

Capacitance

15nF

C26

Capacitance

470nF

C24

Capacitance

0.1uF

C27

Capacitance

0.1uF

Capacitance

0.1uF

C12

Capacitance

220uF

C20

Capacitance

5.6nF

C11

Capacitance

15nF

C10

Capacitance

220uF

Capacitance

0.1uF

C17

Capacitance

2.7nF

Capacitance

2.7nF

Capacitance

0.1uF

C18

Capacitance

220uF

Capacitance

5.6nF

C21

Capacitance

0.1uF

C13

Capacitance

5.6nF

Capacitance

0.1uF

C14

Capacitance

220uF

C16

Capacitance

5.6nF

Capacitance

5.6nF

C19

Capacitance

5.6nF

Capacitance

0.1uF

C25

Capacitance

1uF

12Vp

12V

3V3

12Vp

3V3

12V

3V3

I2C_SDA

2V5

XTAL2

TCK

IFQ

RST

ANT_TX

Prescale

I2C_SCL

SCK

RST

TDO

IFI

Freq_Tune

TMS

I2C_SDA

Prescale

DAC_PWM

IFI_LG

MOSI

ANT_RX

ANT_TX

2V5_EN

2V5

TDI

IFI_HG

IFQ_LG

MOSI

ANT_TX

2V5_EN

Temp_Voltage

IFI_HG

SCK

MISO

IFQ_LG

IFQ_HG

MISO

ANT_RX

XTAL1

IFI

Temp_Voltage

TDI

IFI_LG

RST

2V5

IFQ_HG

Freq_Tune

I2C_SCL

XTAL1

TDI

2V5

TMS

I2C_SCL

IFQ

TDO

XTAL2

TCK

ANT_RX

I2C_SDA

TMS

Resistance

10KΩ

R13

Resistance

10 KΩ

Resistance

16 KΩ

Resistance

270 Ω

R15

Resistance

10 KΩ

R20

Resistance

10 KΩ

R27

Resistance

10KΩ

R17

Resistance

100 KΩ

R26

Resistance

220 Ω

Resistance

270 Ω

R29

Resistance

10KΩ

R14

Resistance

1 KΩ

R21

Resistance

100 KΩ

R24

Resistance

100 KΩ

R30

Resistance

470 Ω

R10

Resistance

100KΩ

R28

Resistance

10KΩ

R18

Resistance

1 KΩ

Resistance

270 Ω

R22

Resistance

3.3 KΩ

R23

Resistance

33 KΩ

Resistance

220 Ω

Resistance

100KΩ

R25

Resistance

10KΩ

R31

Resistance

1000 Ω

Resistance

10KΩ

R11

Resistance

100 KΩ

R12

Resistance

3.3 KΩ

Resistance

220 Ω

R19

Resistance

10 KΩ

R16

Resistance

33 KΩ

LED2

LED1

LED3

End of Life

Capacitance

100uF

C22

Capacitance

100uF

C23

Capacitance

100uF

Capacitance

12pF

Reviews

Generic Inductor
A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
jharwinbarrozo
16.6k
Generic Capacitor
A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Generic Resistor
A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
jharwinbarrozo
1.5M
Net Portal
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
jharwinbarrozo
43.0M
RMCF0805JT47K0
General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
jharwinbarrozo
1.2M
875105359001
10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
jharwinbarrozo
1.2M
CTL1206FYW1T
Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
jharwinbarrozo
1.1M
1070TR
Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
jharwinbarrozo
700.5k
Ground
A common return path for electric current. Commonly known as ground.
jharwinbarrozo
20.5M
Terminal
An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
natarius

Project Name

RADAR PCB Patch antenna Board

Description

A PCB for automotive testing, featuring a 24 GHz radar system with an MCU for processing I&Q values. It connects to a frequency analyzer and uses CW and FMCW modes to detect bicyclists in blind spots of parked cars.

Layout Rules

No layout rules computed.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor	Qty 1
Digi-Key	$8.46–$9.86
LCSC	$8.74
Mouser	$10.21

Controls

Welcome 👋

Flux helps you build PCBs faster with an AI teammate!

Create your account to collaborate, stay updated, fork your own version, and get instant answers from our AI agent.