This is a great contribution to the ongoing study of the lock control module, including instructions and photos of how to upgrade the module to reduce its standby current consumption for increased battery life. Assumes that you are slightly competent with electronics. Large (400k) downloadable PDF file. I worked up something on my locks to fix the
Click here to download the full size of the above Circuit.
problem with the stock logic box. You might have a good time with this and save a bunch of money. Everything I mention here adds up to about $35. 1. Test the lock solenoids by unplugging the lock module and hot-wiring them to battery at the connector plug. Each solenoid has two coils, one for lock and one for unlock. With the large connector unhooked, you can hot-wire each coil in turn to the breaker and see if the solenoids make noise in the doors. You probably have one or more burned out. These can be replaced for $110 apiece, or you can take them apart and rewind them for about $10 worth of wire. These must work before you do anything else, or you`ll just fry everything. Each solenoid coil takes about 70 feet of #20 enameled motor wire. Get from an electric motor repair place. Also make sure that the breaker is good. 2. Open up the existing lock module and make sure the relays aren`t stuck. If they are you can usually just unstick them. The module is not sealed, just slide the tie-wrap off the end and it opens. 3. Go to Trak and buy two 81-89 Chrysler Starter Relays, Gen Automotive #32870, about $12 ea. Also get some assorted colors of #12 stranded wire and a bunch of crimp connectors. You`ll also need two 1N1007 diodes from Radio Shack for about 59 cents. These relays get wired in series with the existing lock module. This means the lock module is now only controlling the relays, and the starter relays are feeding the...
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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