nuno2500 Posted September 5, 2017 A MOC powerer by an USB power bank (2200 mAh). Running at 5v it goes half speed with a DIY usb to PF adapter. Can be charged with a mobile phone charger. A good solution for events ;) Share this post Link to post Share on other sites
pirzyk Posted September 5, 2017 Interesting, so do you have a PF Receiver or you just control it via the polarity switch on the bottom? How long does the battery last and how long does it take to re-charge? What engine did you model your MOC after? I see similarities to a EMD switcher but the cab is different. Share this post Link to post Share on other sites
nuno2500 Posted September 5, 2017 (edited) Jim, i used the 8869 - Power Functions Control Switch only. I don´t know ir the IR works with only 5V. After almost 2 hours i turn the power off...i have been testing it for a week and without recharge. 6x AAA battery= 800 mAh. This powerbank= 2200 mAh. The design is not from a real train...just a bit of this and that from memory ;) I am working on an auto-stop mechanism placed on the track that counts laps and stops the train like in the 4,5V days. Best Regards, Nuno Edited September 5, 2017 by nuno2500 add photo Share this post Link to post Share on other sites
LEGO Train 12 Volts Posted September 5, 2017 Great solution! Very clever! Share this post Link to post Share on other sites
dr_spock Posted September 5, 2017 Nice idea. You could test to see if it works with IR receiver. Its LB1836M motor driver Vcc can be up to 10.5V according to the spec sheets. Share this post Link to post Share on other sites
Ludo Posted September 17, 2017 According to the data sheet (Sanyo) are the allowable operating voltages @ 25°C Ambient temperature: Don't know what the lowest VCC voltage is for the used Alpha chip, the controller inside the IR receiver controlling the motor driver chip. The LB1836M absolute maximum voltage is 10.5V @ Ta = 25°C Share this post Link to post Share on other sites
zephyr1934 Posted September 17, 2017 Brilliant solution to the size and cost of battery packs. I like the prospect of a wayside switch to reverse the train too... but just like the 4.5v reverser, I wouldn't depend on it for an unmanned display at the end of a track. Share this post Link to post Share on other sites
