Ford car audio conversion, just a few billion away from DIY car

Not long ago, a friend who runs a car repair shop sent me a box of car circuit modules. Yesterday, I picked out a car computer from the box and planned to disassemble it.

Currently on Xianyu, the price of this car computer is relatively cheap, ranging from around 20 to 60.

Start disassembling.

After removing the back cover, you can see that there are two vertically soldered power devices on the circuit board, which are cooled by the metal back cover.

This car computer doesn't look like it has a lot of stuff on it, and the interface is actually very simple, it's mainly a car radio and a music player. This board is connected to the board below through an FPC cable.

The main control is Panasonic's MN103SW20QUB.

The power supply on this board is basically provided by the NXP TDA3681, which has seven voltage regulation outputs. The TDA75610SLV on the right is an audio amplifier driver from ST.

When I checked the manual, I found that this thing was sold for 30+ on the LiChuang Mall, which is more expensive than the car machine sold on Xianyu.

Moreover, this TDA75610 supports four-channel 45W audio amplifiers, which looks very good.

The inductor at the power input looks very cyber from this angle.

There is not much on the back of the board, and the pin solder joints of TDA75610SLV need to be paid attention to.

Continue disassembly and remove this layer of aluminum plate.

The main control board disassembled in the previous article is connected to this board via an FPC cable.

There is a VFD display on this board. This thing is not a digital tube, but it looks much more high-end than a digital tube. There are carbon oil pads for many buttons on both sides. In the middle is the power button and volume encoder, which feels very good to turn.

Close-up of the VFD display. The vacuum fluorescent display (VACUUM FLUORESCENT DISPLAY) is a display device developed from vacuum electron tubes, consisting of a cathode that emits electrons (directly heated, collectively known as a filament), a grid that accelerates and controls the electron flow, an anode with electrodes and phosphors printed on a glass substrate, a grid, and a glass cover.

There is a connector next to the VFD display. This connector is also a floating connector. The middle part is not fixed to the base and can move a small amount in the xy direction. This connector is connected to the USB socket on the panel.

There is a QR code engraved on the board, which should be a unique code.

Surface cover and button pads.

A family portrait of the entire car machine.

Next, try to light it up.

First, roughly find the power supply pin, provide 12V power supply, and press the power button to light up the VFD screen.

When the screen is turned on, the effect is really amazing. I took the above photo with the screen out of focus. The actual effect is far more amazing than the photo.

Next, refer to the TDA75610SLV manual and use a multimeter to find the audio output interface.

Pinout diagram in the manual.

Find the speaker interface.

I picked up the "foreign trade leftovers" speakers I bought for 18 yuan from the trash can and took out two speakers. (An article about the whole speaker: The speakers I bought on Xianyu for 18 yuan, are they foreign trade leftovers or... )

I tried welding it and the effect was very good.

Then the next step is to consider finding a few better speakers to build a sound system.

It just so happened that a friend in my group was going to give me four speakers that he had removed from his car to assemble. Now that I have the car machine and the speakers, I think I only need to find an engine, four wheels, a steering wheel, and a set of sofas, and I can DIY a car that belongs to me alone.

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