## Intval Class representing the intval3 features **Kind**: global class * [Intval](#Intval) * [._declarePins()](#Intval+_declarePins) * [._undeclarePins()](#Intval+_undeclarePins) * [._startFwd()](#Intval+_startFwd) * [._startBwd()](#Intval+_startBwd) * [._stop()](#Intval+_stop) * [._watchMicro(err, val)](#Intval+_watchMicro) * [._watchRelease(err, val)](#Intval+_watchRelease) * [.frame(dir, time, delay)](#Intval+frame) ### intval._declarePins() Intval._declarePins() - (internal function) Declares all Gpio pins that will be used **Kind**: instance method of [Intval](#Intval) ### intval._undeclarePins() Intval._undeclarePins() - (internal function) Undeclares all Gpio in event of uncaught error that interupts the node process **Kind**: instance method of [Intval](#Intval) ### intval._startFwd() Intval._startFwd() - Start motor in forward direction by setting correct pins in h-bridge **Kind**: instance method of [Intval](#Intval) ### intval._startBwd() Intval._startBwd() - Start motor in backward direction by setting correct pins in h-bridge **Kind**: instance method of [Intval](#Intval) ### intval._stop() Intval._stop() - Stop motor by setting both motor pins to 0 (LOW) **Kind**: instance method of [Intval](#Intval) ### intval._watchMicro(err, val) Intval._watchMicro() - Callback for watching microswitch state changes Using GPIO 06 on raspberry pi zero w **Kind**: instance method of [Intval](#Intval) | Param | Type | Description | | --- | --- | --- | | err | object | Error object present if problem reading pin | | val | integer | Current value of the pin | ### intval._watchRelease(err, val) Intval._watchRelease() - Callback for watching relese switch state changes Using GPIO 05 on raspberry pi zero w * If closed, start timer. * If opened, check timer AND * If time closed longer than minimum and less than `this._releaseSequence`, start frame * If time closed longer than `this._releaseSequence`, start sequence **Kind**: instance method of [Intval](#Intval) | Param | Type | Description | | --- | --- | --- | | err | object | Error object present if problem reading pin | | val | integer | Current value of the pin | ### intval.frame(dir, time, delay) Intval.frame() - Begin a single frame with set variables or defaults **Kind**: instance method of [Intval](#Intval) | Param | Type | Default | Description | | --- | --- | --- | --- | | dir | boolean | | (optional) Direction of the frame | | time | integer | | (optional) Exposure time, 0 = minimum | | delay | delay | | (optional) Delay after frame before another can be started |