The momentary hold relay board and the acc delay module are a couple things I engineered. The momentary hold relay board is to power on the gps unit and the tablet, it replaces the need for you to push a button. The acc delay module is for my older amp. It delays the power on of the amp and crossover to eliminate any feedback or sub thump until th
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e tablet is powered up. Tablet- I went with a 7" Chinese tablet from Top Notch tablets. Cortex A9 duel core 1. 2 ghz processor. 512 mb of ram. Android 2. 2 system. Bluetooth, gps (didnt work), wifi, 32 gb storage and multipoint 800x480 touchscreen. Cables- I had some issues with "ground noise" from the usb charger. I ended up solving this issue by buying Kensington Noise Reducing Car Audio AUX Cable for MP3 or SmartPhone, including iPhone 4S. I hooked this up with Cables To Go - 03170 - 3. 5mm Stereo Coupler F/F, 2 of Tsunami RCA701-Y1 RCA 1/Female to 2/Male Y Connector Cable (6 Inch, Gray), Mediabridge - 3. 5mm Male To (2) RCA Stereo Audio Cable [New design accomodates smartphone / mp3 cases] - (6 Feet). All great quality and cheap from Amazon. com Chime module- Since I took out the stock head unit and that contains the annoying key reminder, turn signal tone and headlight dinger I had to replace that. I bought a non Onstar module since I do not use Onstar nor XM and it was 1/2 the price. Pac C2R-GM11 11-Bit Interface Radio Integration Adapter for 2007 GM Vehicles with No Onstar System. I used 3 of the wires on this unit. The black ground wire, red RAP acc wire and blue/white amp remote wire. I tied the remote wire and RAP wire together so it will turn on the amp when the tablet is on. Also the RAP wire and ground hook to the 5volt usb charger. Bluetooth GPS- As I mentioned before the internal tablet gps didn`t work....
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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