Full details of the original DCC items can be obtained on the DCC Downloads page. More details of the CBUS system are on the CBUS page. The DCC units can be used as a purely DCC system or can be integrated on a common bus with any other CBUS modules. This provides for simple connection to a computer if desired and for wireless operation using an IPOD touch or similar gadget as the handset. The vacuum line tends to be an easy repair for most. With the development of the MERG Layout Control Bus ie CBUS by Mike Bolton and Gil Fuchs the opportunity was taken to develop a new DCC command station and handset (CAB1, now upgraded to CAB2) with up to date features whilst using the CBUS for communication between handset and command station. 771K views 3 years ago brakebooster Today well be showing how to test and replace the brake booster and the brake booster vacuum line. These designs are now over 20 years old and somewhat dated in relation to recent developments in commercial DCC such as decoders with sound etc. The original versions were designed to be easier to use than most commercial systems for those used to more conventional Model Railway controls. MERG is registered with the NMRA as a manufacturer with the id #165. The system follows the NMRA DCC standards. I'm giving it 4 stars: starting with 5 for doing exactly what it says, then taking off 1 for the unavoidable realities of physics that aren't Sparkfun's fault.The MERG DCC system has been largely developed by Mike Bolton and Gil Fuchs with help from other members including Gordon Hopkins and John Eato. So it would be best to test your project if you need to rely on it for a long running session, and maybe consider selecting a larger battery than the simple math would suggest. ![]() The simplistic math is 1400/50 = 28 hours. My tracker draws a consistent 50 mA and I was able to get just 16 hours of operation from a 1400 mAH LiPo battery. The worthy LiPo batteries include a low voltage cutoff function to avoid damage by being over drawn. This circuit will bend over backwards to meet the power needs of the load in spite of a falling input voltage, which means that the current draw from the battery will increase as time goes on. Note that the math to calculate your battery capacity might not be simple for your load. And the red "Power On" LED is night-vision friendly. The combination of charging and boosting as well as a battery disconnect switch capability without snipping battery leads is a dream come true for small hobby builds. The small size is perfect for a small battery box I built as an alternative to the 4-AA battery power source for a portable sky tracker for astrophotography. Also, this board does not possess any undervoltage or other battery protection features, so we do recommend that you use it only with batteries with a built-in protection circuit. Note: This is not a direct replacement for the SparkFun Power Cell, as it uses a different IC. If you need more than 5V out of your project, the SparkFun LiPo Charger/Boosters can also be daisy-chained together to get a bigger bang for your buck. Multiple connection types are provided for the battery, charge source and switch to allow flexibility of application, and two LEDs provide feedback on system status. The circuit is constructed by feeding an MCP73831 charge controller IC to the LiPo port, and to the input of a PAM2401 boost controller. ![]() While the booster circuit is in operation, this board can draw more current the lower the input voltage, making it perfect to deliver a strong charge in a small amount of time. This LiPo charger is a very economical choice that is equipped with a simple booster circuit utilizing the PAM2401 IC, and includes protection diodes so you can run multiple cells in series for an extra kick. The SparkFun 5V/1A LiPo Charger/Booster is a no-nonsense circuit for generating one amp from a Lithium Polymer battery at 5V.
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