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  • I've a broken RC car I'm trying to make driveable over the web using MQTT messages (for my kids). I'm nearly there, but the cars steering looks like it is two solenoids. The board that provided this does not work properly, so it only steers one way. Can anyone help me build something that will operate the solenoids.

    The car was a 3v (2 * AAA) and I've replaced this with a 3.7v 500mA lipo battery. Eventually I'd like a throwaway ESP8226-12 to be the brains of it. I have a working testbed that listens for MQTT messages and sets LEDS using a combination of digitalWrite and analogWrite. It's just the solenoids I can't figure. It is not enough to just put 3.3v through them, the board must have provided something in addition to this? I can't find much of help on the internet

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