When you have both the enclosure and the clue how you want it to look like, you can start fitting in the components. You can see how the two enclosures look like on the photo. Luckily the seller had this black enclosure on stock, I bought it without further hesitation. At first, I ordered one I thought was good, but when I saw it with my own eyes, I almost had a heart attack. Drills, saw, sand paper and other hand toolsįirst, you need to imagine what the charger should look like, and get an enclosure that can fit in all the stuff you want.Screws - 4 mm screws for the transformer.Relay - general purpose small relay, able to handle the charging current.NPN transistor - a random BC transistor that is able to handle 30 mA.Wire terminal block - I used this kind of connectors.PicKit2 or PicKit3 - build or buy, I used my home-made PicKit2 for the job.LM7805 - TO220 voltage regulator, buy in bulk off ebay. Voltage divider resistors - any kind of resistors with 1:4 dividing ratio.1K resistor - series protection resistor for the NPN transistors base pin.4K7 resistor - pull-up resistor for the button input.220ohm resistors - protection resistors for the LEDs.PIC12F683 - ebay link, buy more of these, they're very useful for small MCU projects.LED - buy in bulk off ebay, I used a green and a red one, both 3 mm.Button - a random button, I've had this for ages.Fuse holder - I bought this one, this is for the transformers secondary winding.Banana-plugs and sockets - buy in bulk off ebay.Panel meter - must be able to measure your transformers maximum current.Transformer - think of the charging current, then make your decision about the amps.Enclosure - buy the one you like the most, or make your own.Ultra-low power transmitter can be left connected to batteriesHere's a list of the thing you will need to make a copy:.Multi-voltage – simply plug into your cigarette lighter plug.Changes colour for under or over voltage.Uses RF technology to transmit voltages.The standard kit comes with one RF Transmitter Both 12V and 24V batteries can be monitored. Ultra-low power voltage transmitters are able to be left permanently connected to batteries and do not need to be switched off when not in use. The RF Battery Monitor transmitter uses a long-range RF technology meaning that communication is reliable in all configuration of car and trailer. The receiver is mounted with a flexible windscreen-mount, but can also be attached using any standard camera mount including those available from RAM. The receiver can also be permanently powered if desired. Installation is as simple as attaching the red and black terminals on the transmitter to the battery that needs to be monitored and plugging the receiver into a cigarette lighter socket. It gives you the power to monitor and quickly identify unwelcome battery conditions as well as avoid impromptu downtime ultimately extending the life of your batteries. The RF Battery Monitor is the perfect application for monitoring battery operating parameters across your entire vehicle fleet. Both 12 and 24V batteries can be monitored simultaneously. Ultra-low power voltage transmitters can be left permanently connected to batteries and do not need to be switched off when not in use. It uses long-range remote frequency technology meaning that communication is reliable in all configurations. Each battery can be given a name that is relevant to its application. Both minimum and maximum alarm voltages can be set by using the keypad in conjunction with an on-screen menu. Alarm levels can be set so that the unit warns the user with a screen colour change and an optional buzzer. The RF Battery Monitor measures battery voltage of up to 16 remote batteries and displays it on a remote colour screen. There is no costly installation required making it perfect to monitor a large fleet of batteries or a single application like a caravan, boat, fridge and anything else that runs on a battery. Hummingbird Electronics' RF Battery Monitor allows the user to monitor up to 16 remote battery’s without having to run wires to them.
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