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RFBitBangerNano

profdc9·RFBitBanger·RFBitBangerNano/RFBitBangerNano.kicad_pcb

RFBitBangerNano PCB layout, top view — open source AVR/Arduino board by profdc9
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About the RFBitBangerNano PCB

RFBitBangerNano is an open source AVR/Arduino PCB design by profdc9, published on GitHub. It is a 2-layer board measuring 152 × 88 mm, with 209 components from 81 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the LM7805_TO220, LM386, LM358, LCD1602ExtraPins and SI5351A. By type, the board carries 70 resistors, 51 capacitors, 19 connectors, 17 diodes, 15 transistors and 7 inductors.

It belongs with the rf & radio and audio designs in this gallery.

From the project

A QRP digital transceiver created from readily available parts for off-the-grid maintenance

A presentation presented at the 2023 QSO Today conference on the RFBitBanger can be viewed on Youtube here.

A single band double-sideband radio, with the band changed by pluggable external filters on 20 m to 80 m. A double-balanced ring mixer is used to provide good rejection of strong stations while not requiring any custom ICs such as SA612 or FST3253. The mixer has strong drive to reduce nonlinearity. Can be assembled and operated by a properly licensed individual that may not have a great deal of electronics experience or experience at making HF contacts. The radio is made from readily…

RFBitBangerNano, from the project README
From the project README

Main components on the RFBitBangerNano

LM7805_TO220LM386LM358LCD1602ExtraPinsSI5351AArduino_Nano_v3.x

RFBitBangerNano bill of materials (BOM)

209 components, 81 distinct parts.

QtyPartRefs
1
LM7805_TO220
U2
1
LM386
U3
1
LM358
U4
1
LCD1602ExtraPins
U5
1
SI5351A
U6
1
Arduino_Nano_v3.x
A1
7
2N3904
Q1, Q2, Q4, Q10, Q11, Q12, Q14
4
2N7000
Q3, Q6, Q7, Q9
1
NC
Q5
2
SS8550
Q8, Q13
1
NC
Q15
3
7.X MHz
Y2, Y4, Y5
1
27 MHz
Y3
1
POWER
J1
1
Barrel_Jack
J2
8
Conn_01x01
J3, J4, J6, J7, J8, J13, J20, J21
1
si5351mod
J10
1
SPEAKER
J11
1
Conn_Coaxial
J12
2
Conn_01x01
J15, J16
Show 61 more
QtyPartRefs
1
Filt1
J17
1
Filt2
J18
1
Conn_01x20
J19
1
Mini-DIN_6pins_ver4
P1
1
QSK
JP1
1
Sample
JP2
1
BYPASS
JP4
1
JREF1
JP5
1
JVAL1
JP7
1
Shutdown
JP8
1
DPDTRelay
RLY1
2
10k
RV1, RV2
1
10k
RV3
1
2k
RV4
5
SW_Push
SW2, SW3, SW4, SW5, SW6
2
Trifilar
T1, T2
1
Current
T3
1
Common-Mode Choke
T4
3
1N4007
D1, D4, D5
3
LED
D3, D16, D19
1
D_Zener
D6
1
1N4001
D8
9
1N4148
D9, D10, D11, D12, D13, D14, D15, D17 +1
5
100 uH
L3, L5, L9, L10, L11
1
100 uH
L4
1
22 uH
L6
2
1000 uF
C3, C53
2
100 uF
C6, C40
1
1 nF
C7
22
100 nF
C10, C11, C13, C16, C17, C20, C24, C25 +14
4
10 uF
C12, C15, C50, C52
1
2.2 uF
C14
3
NC
C18, C43, C60
1
220 uF
C19
3
100 pF
C21, C22, C48
1
10 nF
C23
1
10 nF
C26
2
100 nF
C27, C41
2
10 nF
C30, C33
1
33 pF
C32
1
330 pF
C35
1
4.7 uF
C36
1
1 uF
C39
1
330 nF
C45
1
22 uF
C49
3
100R
R2, R20, R63
16
10k
R3, R7, R24, R29, R30, R35, R40, R46 +8
18
1k
R4, R6, R12, R13, R18, R22, R26, R27 +10
3
51R
R5, R21, R25
4
470R
R8, R14, R17, R19
7
100k
R9, R10, R31, R32, R34, R55, R61
4
47R
R11, R28, R49, R50
2
47k
R15, R52
2
470k
R16, R66
1
220k
R23
1
2R2
R38
2
22k
R39, R60
1
150R
R41
2
0R
R51, R74
3
NC
R53, R56, R67
1
3k3
R57

RFBitBangerNano design files

The KiCad project lives in the profdc9/RFBitBanger repository on GitHub; these links point at the commit this page was built from.

RFBitBangerNano: common questions

What microcontroller does the RFBitBangerNano use?

The RFBitBangerNano is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the RFBitBangerNano PCB?

The RFBitBangerNano measures 152 × 88 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RFBitBangerNano?

209 components, from 81 distinct parts. The full bill of materials is listed on this page.

Where can I download the RFBitBangerNano design files?

From the profdc9/RFBitBanger repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the RFBitBangerNano design in my own project?

The repository has no license, so all rights stay with profdc9. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the RFBitBangerNano 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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