## intval Object representing the intval3 features **Kind**: global constant * [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) * [.setDir([dir])](#intval.setDir) * [.frame([dir], [time])](#intval.frame) * [.sequence()](#intval.sequence) ### intval._declarePins() (internal function) Declares all Gpio pins that will be used **Kind**: static method of [intval](#intval) ### intval._undeclarePins() (internal function) Undeclares all Gpio in event of uncaught error that interupts the node process **Kind**: static method of [intval](#intval) ### intval._startFwd() Start motor in forward direction by setting correct pins in h-bridge **Kind**: static method of [intval](#intval) ### intval._startBwd() Start motor in backward direction by setting correct pins in h-bridge **Kind**: static method of [intval](#intval) ### intval._stop() Stop motor by setting both motor pins to 0 (LOW) **Kind**: static method of [intval](#intval) ### intval._watchMicro(err, val) Callback for watching relese switch state changes. Using GPIO 06 on Raspberry Pi Zero W. 1) If closed AND frame active, start timer, set state primed to `true`. 1) If opened AND frame active, stop frame Microswitch + 10K ohm resistor * 1 === open * 0 === closed **Kind**: static 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) Callback for watching relese switch state changes. Using GPIO 05 on Raspberry Pi Zero W. 1) If closed, start timer. 2) If opened, check timer AND 3) If `press` (`now - intval._state.release.time`) greater than minimum and less than `intval._release.seq`, start frame 4) If `press` greater than `intval._release.seq`, start sequence Button + 10K ohm resistor * 1 === open * 0 === closed **Kind**: static method of [intval](#intval) | Param | Type | Description | | --- | --- | --- | | err | object | Error object present if problem reading pin | | val | integer | Current value of the pin | ### intval.setDir([dir]) Set the default direction of the camera. * forward = true * backward = false **Kind**: static method of [intval](#intval) | Param | Type | Default | Description | | --- | --- | --- | --- | | [dir] | boolean | true | Direction of the camera | ### intval.frame([dir], [time]) Begin a single frame with set variables or defaults **Kind**: static method of [intval](#intval) | Param | Type | Default | Description | | --- | --- | --- | --- | | [dir] | boolean | "null" | (optional) Direction of the frame | | [time] | integer | "null" | (optional) Exposure time, 0 = minimum | ### intval.sequence() Start a sequence of frames, using defaults or explicit instructions **Kind**: static method of [intval](#intval)