Cannot find module USB

[amunizp]

I run keyboard.js expecting the programme to run on command line waiting for keystrokes.

$ node keyboard.js
internal/modules/cjs/loader.js:638
throw err;
^

Error: Cannot find module 'usb'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Module.require (internal/modules/cjs/loader.js:692:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object. (/home/andres/tenx_usb_missile_launcher/tenx_driver.js:32:11)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)

[amunizp]

OK so sorry, I read the instructions again. Now stuck on keypress.
$ npm install usb
$ npm install -g npm
$ npm install keypress.js
npm WARN saveError ENOENT: no such file or directory, open '/home/andres/package.json'
npm WARN enoent ENOENT: no such file or directory, open '/home/andres/package.json'
npm WARN andres No description
npm WARN andres No repository field.
npm WARN andres No README data
npm WARN andres No license field.

• [email protected]
  updated 1 package and audited 1 package in 1.011s
  found 0 vulnerabilities

$ node keyboard.js
internal/modules/cjs/loader.js:638
throw err;
^

Error: Cannot find module 'keypress'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Module.require (internal/modules/cjs/loader.js:692:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object. (/home/andres/tenx_usb_missile_launcher/keyboard.js:9:16)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)

[amunizp]

OK deleted modules folder and the "node_modules_old2.json " file.

$ npm install usb

> [email protected] install /home/andres/tenx_usb_missile_launcher/node_modules/usb
> prebuild-install --verbose || node-gyp rebuild

prebuild-install info begin Prebuild-install version 5.3.6
prebuild-install info looking for cached prebuild @ /home/andres/.npm/_prebuilds/405966-usb-v1.6.3-node-v64-linux-x64.tar.gz
prebuild-install info found cached prebuild 
prebuild-install info unpacking @ /home/andres/.npm/_prebuilds/405966-usb-v1.6.3-node-v64-linux-x64.tar.gz
prebuild-install info unpack resolved to /home/andres/tenx_usb_missile_launcher/node_modules/usb/build/Release/usb_bindings.node
prebuild-install info unpack required /home/andres/tenx_usb_missile_launcher/node_modules/usb/build/Release/usb_bindings.node successfully
prebuild-install info install Successfully installed prebuilt binary!
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN [email protected] No repository field.

+ [email protected]
added 63 packages from 46 contributors and audited 63 packages in 2.286s

5 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

$ npm install keypress
npm WARN [email protected] No repository field.

+ [email protected]
added 1 package from 1 contributor and audited 64 packages in 0.808s

5 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities

$ node keyboard.js 
/home/andres/tenx_usb_missile_launcher/node_modules/usb/usb.js:38
	this.__open()
	     ^

Error: LIBUSB_ERROR_ACCESS
    at Device.usb.Device.open (/home/andres/tenx_usb_missile_launcher/node_modules/usb/usb.js:38:7)
    at TenxDriver.open (/home/andres/tenx_usb_missile_launcher/tenx_driver.js:55:17)
    at Object.<anonymous> (/home/andres/tenx_usb_missile_launcher/keyboard.js:17:6)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)

Sorry is turning out to be a bit of an addition to the readme documentation. It seems it needs to be an admin. Still problem with cursor. But should help any novice like me that comes across this.

$ sudo node keyboard.js 
TENX ROCKET LAUNCHER DEMO
Press Cursor Keys to move camera
Press f to Fire
Press q to quit
got "keypress character" f
got "keypress character" f
got "keypress character" f
got "keypress" up
timers.js:390
    throw new ERR_INVALID_CALLBACK();
    ^

TypeError [ERR_INVALID_CALLBACK]: Callback must be a function
    at setTimeout (timers.js:390:11)
    at ReadStream.<anonymous> (/home/andres/tenx_usb_missile_launcher/keyboard.js:70:26)
    at ReadStream.emit (events.js:198:13)
    at emitKey (/home/andres/tenx_usb_missile_launcher/node_modules/keypress/index.js:406:12)
    at ReadStream.onData (/home/andres/tenx_usb_missile_launcher/node_modules/keypress/index.js:48:14)
    at ReadStream.emit (events.js:198:13)
    at addChunk (_stream_readable.js:288:12)
    at readableAddChunk (_stream_readable.js:269:11)
    at ReadStream.Readable.push (_stream_readable.js:224:10)
    at TTY.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)

So it shoots but does not understand what moving means. I guess this is because:

Bus 001 Device 014: ID 1130:0202 Tenx Technology, Inc. Rocket Launcher

and it refers to a camera I do not have.

[amunizp]

I commented the last line of keyboard.js

// Set a timer to trigger an automatic stop if required
//if (s==1) stop_timer = setTimeout(tenx.stop(), STOP_DELAY_MS);

unsure what it did, but the machine seems to work now.

[amunizp]

I can confirm the above fix, fixes the problem.