#SIMPLE 6V BATTERY GUARD CIRCUIT FREE#

1.5V Solar Garden Light with Enhanced Features.Solar Pathway Light Circuit with Constant Voltage.Using a 9 V Battery and High Bright White LED.I chose 3v relays because it can barely close those with 5v coils. I mean.like I said, it's the guts from a cheap RC car. Also not entirely sure about control system voltage. I don't know what could potentially be a problem with that. Not sure if the load and control systems can share a common ground. Some effects using motors, briefly exceeded that by a small amount, but the duration was well under a second. I say 'effects', because they were all different. Since the only relays I had, had a maximum contact current of 2A, I made sure the current drawn by the effects was below that. The effects were powered by a 6v lead acid battery. (Forwards, backwards, left, or right) These relays were used to switch power to the effects on and off.

I replaced the drive motor with the circuit above, and did the same with the steering motor, so that a different one of three relays is switched on momentarily, depending on which of the buttons on the controller is depressed. DC at around or a little below the voltage of the power supply for the board.

#SIMPLE 6V BATTERY GUARD CIRCUIT FREE#

Can't find a free image hosting site that works hereįrom the board? Just what used to be the output to the drive motor and steering motor. Is there a better way? A more efficient way? Did I make some glaring mistake? I never got the idea from anywhere, it just made sense to me to do it that way, but I have virtually no experience in electronicsĮdit: One sec. So then I guess the real question is about the little circuit I made to operate a different relay (or none), depending on which way the current formerly meant for the motor, is flowing. That's why I switched to an 18650 I haven't tested, but it should be more than enough life for what I need, considering that the AAs weren't too far off. The main problem was that, after a short period, the relays would become intermittent and everything would get messed up as the batteries drained to where they could no longer operate the relays. But #1 Would it be better to use transistors, rather than relays? The noise of the clicking isn't really an issue, but I suppose it potentially could be. now, I look on Ebay, and see dozens of listings for cheap relays with 10A contacts and 3v coils.dunno what changed there. Power for the effects comes from battery packs of 2 or 4 18640 batteries, and the relays have 3v coils and 2A contact current max.Īt the time I made these, I had a really hard time finding relays with 3v coils or less, and never found anything with more than 2A contact current. The only other change was to replace the 3XAA battery holder from the cars, with a single 18650. I simply pulled the circuit boards out of some cheap RC cars, removed the motors, and replaced them with the circuit above.

I made this circuit for controlling a bunch of haunted house type effects.

Simple 6v battery guard circuit