2 layers280 × 186 mm
2 layers70.9 × 33.8 mm
Tmv7displaymod
phastmike/tmv7displaymod1This repository contains a PCB design for a solution, to the "failing LCD display problem", by OE9MKV. The implementation is based on reverse engineering some parts of the proprietary serial protocol from Kenwood.
- Size
- 70.9 × 33.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 32
- Pads
- 105
- Tracks, vias
- 67, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 2 Aug 2023
- Updated
- 24 Sep 2023
Overview
Tmv7displaymod is an open-source printed circuit board by phastmike, from the phastmike/tmv7displaymod repository on GitHub. It is a 2-layer board of 70.9 × 33.8 mm with 18 parts on 32 nets, routed with 67 tracks and 0 vias.
It is built around the ATMEGA8-16PC and L7805. Its parts include 4 capacitors, 4 connectors, 2 ICs, 1 resistor and 1 switch. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA8-16PC
PDIP-280℃~+70℃ 10bit 16MHz 1KB 23 4.5V~5.5V 512Byte 8 Bit 8KB AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC)Microchip TechnologyMicrocontrollers (MCU/MPU/SOC)
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdKenwood TM-V7 Display Mod
This repository contains a PCB design for a solution, to the "failing LCD display problem", by OE9MKV. The implementation is based on reverse engineering some parts of the proprietary serial protocol from Kenwood.
The project uses KiCad 7 and the exported outputs are on the exports folder.
Includes schematic and PCB but you should refer to OE9MKV and PD2RLD webpages for more details, schematic, firmware, code and so on.
Thanks to both and in particular to OE9MKV for all the effort in the development an implementation of a solution.
Generated outputs
Links
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2, H3, H4 |
| 3 | 100n | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C3, C4 |
| 2 | 10k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 1 | 0.33u | Capacitor_THT:C_Disc_D7.5mm_W5.0mm_P5.00mm | C1 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | ATmega8-16P | Package_DIP:DIP-28_W7.62mm | U4 |
| 1 | Backlight | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J4 |
| 1 | Conn_01x10 | Connector_Molex:Molex_KK-254_AE-6410-10A_1x10_P2.54mm_Vertical | J2 |
| 1 | DC IN | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J1 |
| 1 | Kenwood CAT Connector | Connector_Molex:Molex_KK-254_AE-6410-05A_1x05_P2.54mm_Vertical | J3 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Horizontal_TabDown | U1 |
| 1 | RESET | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | SW1 |
Questions
How big is the Tmv7displaymod PCB?
It measures 70.9 × 33.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tmv7displaymod use?
18 parts, built around the ATMEGA8-16PC and L7805. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Tmv7displaymod KiCad files?
From the phastmike/tmv7displaymod repository on GitHub, at the commit this page was made from: the board is tmv7displaymod.kicad_pcb and its schematic tmv7displaymod.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tmv7displaymod design in my own project?
Its repository states no licence, so its author keeps all rights: ask phastmike before reusing the design.
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