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BitBangDisplay

profdc9·RFBitBanger·BitBangDisplay/BitBangDisplay.kicad_pcb

BitBangDisplay PCB layout, top view — open source board by profdc9
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About the BitBangDisplay PCB

BitBangDisplay is an open source PCB design by profdc9, published on GitHub. It is a 2-layer board measuring 100 × 88 mm, with 78 components from 25 distinct parts.

Other key parts include the LCD1602ExtraPins and LM358. By type, the board carries 28 resistors, 18 connectors, 16 capacitors, 5 switches, 4 jumpers and 4 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…

BitBangDisplay, from the project README
From the project README

Main components on the BitBangDisplay

LCD1602ExtraPinsLM358

BitBangDisplay bill of materials (BOM)

78 components, 25 distinct parts.

QtyPartRefs
1
LCD1602ExtraPins
U1
1
LM358
U2
1
LCD1602ExtraPins
U5
1
Conn_01x04
J1
1
Audio-Jack-3_2Switches
J2
4
Conn_01x01
J3, J7, J20, J21
7
Conn_01x01
J4, J5, J6, J8, J9, J11, J12
1
Conn_01x20
J10
3
KeyerJack
J13, J14, J15
1
SPEAKER
J16
2
Jumper_NC_Dual
JP1, JP2
2
LINE
JP3, JP4
5
SW_Push
SW1, SW2, SW3, SW4, SW5
4
100 uH
L1, L2, L3, L4
1
10 nF
C1
3
1 nF
C2, C3, C4
2
22 uF
C5, C6
8
100 nF
C7, C8, C10, C11, C13, C14, C16, C17
2
100 pF
C9, C12
2
470R
R1, R2
Show 5 more
QtyPartRefs
8
10k
R3, R4, R11, R20, R23, R29, R46, R47
4
4k7
R5, R9, R14, R16
9
1k
R6, R7, R8, R12, R13, R17, R21, R24 +1
4
100k
R10, R15, R18, R19
1
47R
R22

BitBangDisplay design files

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

BitBangDisplay: common questions

How big is the BitBangDisplay PCB?

The BitBangDisplay measures 100 × 88 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BitBangDisplay?

78 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the BitBangDisplay 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 BitBangDisplay 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.

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