Chris Owens

Arduino Serial.println not working

Hey everyone,

Ran into a really obvious mistake today working with an Arduino. Thought I’d corrupted a boot loader and couldn’t get Serial.println to return anything. Turned out I’d just missed Serial.begin(9600).

Thanks!

Running ReadTheDocs on Windows

Hey everyone,

This is a quick guide on how to setup your own readthedocs server on Windows.

Install Python 2.7: https://www.python.org/downloads/

Install virtual env using pip via command prompt (run as administrator):
c:Python27>python.exe scriptspip.exe install virtualenv

Create a virtual environment:
c:Python27>scriptsvirtualenv.exe c:readthedocs c:readthedocsScripts>activate.bat (readthedocs) c:readthedocsScripts>

Create a folder and clone the repository:
(readthedocs) c:readthedocsScripts>md checkouts (readthedocs) c:readthedocsScripts>cd checkouts (readthedocs) c:readthedocsScriptscheckouts>git clone http://github.com/rtfd/readthedocs.org.git Cloning into 'readthedocs.org'... remote: Counting objects: 47896, done. remote: Compressing objects: 100% (53/53), done. remote: Total 47896 (delta 19), reused 0 (delta 0), pack-reused 47843 Receiving objects: 100% (47896/47896), 37.91 MiB | 8.76 MiB/s, done. Resolving deltas: 100% (31783/31783), done. Checking connectivity... done.

Get and install dependencies using pip:
(readthedocs) c:readthedocsScriptscheckouts>cd readthedocs.org (readthedocs) c:readthedocsScriptscheckoutsreadthedocs.org>git clone http://github.com/rtfd/readthedocs.org.git

Ran into the following error: no module named django.core.management (probably caused by having two version of python installed)
(readthedocs) c:readthedocsScriptscheckoutsreadthedocs.org>c:Python27python.exe c:readthedocsScriptspip.exe install django --upgrade Collecting django Using cached Django-1.10.2-py2.py3-none-any.whl Installing collected packages: django Successfully installed django-1.10.2 You are using pip version 8.1.1, however version 8.1.2 is available. You should consider upgrading via the 'python -m pip install --upgrade pip' comm and.

Build the database:
(readthedocs) c:readthedocsScriptscheckoutsreadthedocs.org>c:Python27pytho n.exe C:readthedocsScriptscheckoutsreadthedocs.orgmanage.py syncdb Operations to perform: Synchronize unmigrated apps: allauth, messages, django_extensions, django_grav atar, rest_framework, annoying, textclassifier, corsheaders, copyright, privacy, django_countries, humanize, rtd_tests, haystack, doc_builder, staticfiles, rest api, bitbucket_oauth2, bitbucket, notifications, djangosecure, pagination, githu b, djcelery, payments Apply all migrations: core, account, builds, gold, sessions, admin, guardian, tastypie, messages_extends, comments, sites, contenttypes, redirects, auth, tagg it, oauth, bookmarks, donate, projects, socialaccount Synchronizing apps without migrations: Creating tables... Creating table corsheaders_corsmodel Creating table celery_taskmeta Creating table celery_tasksetmeta Creating table djcelery_intervalschedule Creating table djcelery_crontabschedule Creating table djcelery_periodictasks Creating table djcelery_periodictask Creating table djcelery_workerstate Creating table djcelery_taskstate Running deferred SQL... Installing custom SQL... Running migrations: Rendering model states... DONE Applying contenttypes.0001_initial... OK Applying auth.0001_initial... OK Applying account.0001_initial... OK Applying account.0002_email_max_length... OK Applying admin.0001_initial... OK Applying contenttypes.0002_remove_content_type_name... OK Applying auth.0002_alter_permission_name_max_length... OK Applying auth.0003_alter_user_email_max_length... OK Applying auth.0004_alter_user_username_opts... OK Applying auth.0005_alter_user_last_login_null... OK Applying auth.0006_require_contenttypes_0002... OK Applying taggit.0001_initial... OK Applying projects.0001_initial... OK Applying builds.0001_initial... OK Applying projects.0002_add_importedfile_model... OK Applying bookmarks.0001_initial... OK Applying builds.0002_build_command_initial... OK Applying comments.0001_initial... OK Applying core.0001_initial... OK Applying core.0002_make_userprofile_user_a_onetoonefield... OK Applying core.0003_add_banned_status... OK Applying donate.0001_initial... OK Applying donate.0002_dollar-drop-choices... OK Applying donate.0003_add-impressions... OK Applying donate.0004_rebase-impressions-on-base... OK Applying donate.0005_add-geo-filters... OK Applying donate.0006_add-geo-data... OK Applying donate.0007_add-impression-totals... OK Applying gold.0001_initial... OK Applying guardian.0001_initial... OK Applying messages_extends.0001_initial... OK Applying sites.0001_initial... OK Applying socialaccount.0001_initial... OK Applying socialaccount.0002_token_max_lengths... OK Applying oauth.0001_initial... OK Applying oauth.0002_combine_services... OK Applying oauth.0003_move_github... OK Applying oauth.0004_drop_github_and_bitbucket_models... OK Applying oauth.0005_add_account_relation... OK Applying oauth.0006_move_oauth_source... OK Applying oauth.0007_org_slug_nonunique... OK Applying projects.0003_project_cdn_enabled... OK Applying projects.0004_add_project_container_image... OK Applying projects.0005_sync_project_model... OK Applying projects.0006_add_domain_models... OK Applying projects.0007_migrate_canonical_data... OK Applying projects.0008_add_subproject_alias_prefix... OK Applying projects.0009_add_domain_field... OK Applying projects.0010_migrate_domain_data... OK Applying projects.0011_delete-url... OK Applying projects.0012_proper-name-for-install-project... OK Applying projects.0013_add-container-limits... OK Applying projects.0014_add-state-tracking... OK Applying projects.0015_add_project_allow_promos... OK Applying projects.0016_build-queue-name... OK Applying projects.0017_add_domain_https... OK Applying redirects.0001_initial... OK Applying sessions.0001_initial... OK Applying taggit.0002_auto_20150616_2121... OK Applying tastypie.0001_initial... OK

Starting the readthedocs server:
D:UsersChrisO>C:readthedocsScriptsactivate.bat

(readthedocs) D:UsersChrisO>c:Python27python.exe C:readthedocsScriptschec
koutsreadthedocs.orgmanage.py runserver
Performing system checks…

System check identified no issues (1 silenced).
October 21, 2016 – 11:16:17
Django version 1.8.3, using settings ‘readthedocs.settings.dev’
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.

Create a new readthedocsproject:
I followed this guide: http://read-the-docs.readthedocs.io/en/latest/getting_started.html#in-rst

Creating the new project: C:readthedocs>md whatibroke C:readthedocs>cd whatibroke C:readthedocswhatibroke>C:readthedocsScriptssphinx-quickstart.exe Welcome to the Sphinx 1.3.5 quickstart utility.

Please enter values for the following settings (just press Enter to
accept a default value, if one is given in brackets).

Installing a theme – sphinx_rtd_theme (optional step):
c:readthedocsScripts>activate.bat (readthedocs) c:readthedocsScripts>cd c:readthedocswhatibroke (readthedocs) c:readthedocswhatibroke>pip install sphinx_rtd_theme

In your conf.py file (C:readthedocswhatibrokeconf.py):
import sphinx_rtd_theme html_theme = "sphinx_rtd_theme" html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]

Building your output:
c:readthedocsScripts>activate.bat (readthedocs) c:readthedocsScripts>cd c:readthedocswhatibroke (readthedocs) c:readthedocswhatibroke>make html Running Sphinx v1.3.5 loading pickled environment... done building [mo]: targets for 0 po files that are out of date building [html]: targets for 0 source files that are out of date updating environment: 0 added, 0 changed, 0 removed looking for now-outdated files... none found no targets are out of date. build succeeded.

Build finished. The HTML pages are in _build/html.

Thanks to the following stackoverflow post for a lot of the information here: http://stackoverflow.com/a/19892345/522859

Unable to Access RDS Database from Elastic Beanstalk Application

Hey everyone,

I ran into a bit of an issue today where I was unable to access my RDS SQL Express instance from my .NET Elastic Beanstalk instance. I was receiving the following error:

The server was not found or was not accessible.

The solution turned out to be fairly simply thanks to this StackOverflow post: http://stackoverflow.com/a/33207022/522859

Get your server instance security group:
– Log into AWS
– Navigate to elastic beanstalk
– Open your application instance
– Open configuration
– Open instances
– Find “server” on the page and copy the value in the “EC2 security groups” field

Add your server instance security group to your rds rules:
– Navigate to the RDS Dashboard
– Open your RDS instance
– Click on view details (left hand side or top)
– Find Security and Network
– Click on the rds-launch-wizard under security groups
– Click on inbound rules (very bottom currently)
– Add a new inbound rule with the copied security group as the source

How to Add a FontAwesome Icon using :after

Hey everyone,

Just a quick post on how to add a fontawesome icon using :after:

.fl-cart-product-price:after{ content: 'f00d'; font-family: FontAwesome; font-weight: normal; font-style: normal; margin: 0px 0px 0px 10px; color: #555; font-size: 85%; text-decoration: none; }

See this stackoverflow post for more info: http://stackoverflow.com/a/18793584/522859

Unilateral receiver not allowed in chained payment is restricted – Adaptive Payment DotNet SDK

Hey everyone,

Just an error I ran into today while using the Adaptive Payments SDK for C#/.NET:

Unilateral receiver not allowed in chained payment is restricted

Thankfully this one is fairly simple – one of the receivers hasn’t confirmed their account.

http://stackoverflow.com/a/32816078/522859

Could not find part of the path ‘C:xlib’ – Adding new Web API Project

Hey everyone,

I ran into the following error when I tried to add a new Web API project in Visual Studio Express 2015 for Web:

Could not find part of the path ‘C:xlib’

The workaround for this was to temporarily unbind the project from TFS: File > Source Control > Advanced > Change Source Control > Click unbind on each of the projects

While not the same problem, this post helped me out: https://github.com/NuGet/Home/issues/1164

Culture Info Codes

Hey everyone,

Just posting a link to this list of culture info codes etc. I was looking for the en-AU one but had a bit of trouble tracking it down.

Language Culture Name	Display Name	Culture Code	ISO 639x Value
af-ZA	Afrikaans – South Africa	0x0436	AFK
sq-AL	Albanian – Albania	0x041C	SQI
ar-DZ	Arabic – Algeria	0x1401	ARG
ar-BH	Arabic – Bahrain	0x3C01	ARH
ar-EG	Arabic – Egypt	0x0C01	ARE
ar-IQ	Arabic – Iraq	0x0801	ARI
ar-JO	Arabic – Jordan	0x2C01	ARJ
ar-KW	Arabic – Kuwait	0x3401	ARK
ar-LB	Arabic – Lebanon	0x3001	ARB
ar-LY	Arabic – Libya	0x1001	ARL
ar-MA	Arabic – Morocco	0x1801	ARM
ar-OM	Arabic – Oman	0x2001	ARO
ar-QA	Arabic – Qatar	0x4001	ARQ
ar-SA	Arabic – Saudi Arabia	0x0401	ARA
ar-SY	Arabic – Syria	0x2801	ARS
ar-TN	Arabic – Tunisia	0x1C01	ART
ar-AE	Arabic – United Arab Emirates	0x3801	ARU
ar-YE	Arabic – Yemen	0x2401	ARY
hy-AM	Armenian – Armenia	0x042B
Cy-az-AZ	Azeri (Cyrillic) – Azerbaijan	0x082C
Lt-az-AZ	Azeri (Latin) – Azerbaijan	0x042C
eu-ES	Basque – Basque	0x042D	EUQ
be-BY	Belarusian – Belarus	0x0423	BEL
bg-BG	Bulgarian – Bulgaria	0x0402	BGR
ca-ES	Catalan – Catalan	0x0403	CAT
zh-CN	Chinese – China	0x0804	CHS
zh-HK	Chinese – Hong Kong SAR	0x0C04	ZHH
zh-MO	Chinese – Macau SAR	0x1404
zh-SG	Chinese – Singapore	0x1004	ZHI
zh-TW	Chinese – Taiwan	0x0404	CHT
zh-CHS	Chinese (Simplified)	0x0004
zh-CHT	Chinese (Traditional)	0x7C04
hr-HR	Croatian – Croatia	0x041A	HRV
cs-CZ	Czech – Czech Republic	0x0405	CSY
da-DK	Danish – Denmark	0x0406	DAN
div-MV	Dhivehi – Maldives	0x0465
nl-BE	Dutch – Belgium	0x0813	NLB
nl-NL	Dutch – The Netherlands	0x0413
en-AU	English – Australia	0x0C09	ENA
en-BZ	English – Belize	0x2809	ENL
en-CA	English – Canada	0x1009	ENC
en-CB	English – Caribbean	0x2409
en-IE	English – Ireland	0x1809	ENI
en-JM	English – Jamaica	0x2009	ENJ
en-NZ	English – New Zealand	0x1409	ENZ
en-PH	English – Philippines	0x3409
en-ZA	English – South Africa	0x1C09	ENS
en-TT	English – Trinidad and Tobago	0x2C09	ENT
en-GB	English – United Kingdom	0x0809	ENG
en-US	English – United States	0x0409	ENU
en-ZW	English – Zimbabwe	0x3009
et-EE	Estonian – Estonia	0x0425	ETI
fo-FO	Faroese – Faroe Islands	0x0438	FOS
fa-IR	Farsi – Iran	0x0429	FAR
fi-FI	Finnish – Finland	0x040B	FIN
fr-BE	French – Belgium	0x080C	FRB
fr-CA	French – Canada	0x0C0C	FRC
fr-FR	French – France	0x040C
fr-LU	French – Luxembourg	0x140C	FRL
fr-MC	French – Monaco	0x180C
fr-CH	French – Switzerland	0x100C	FRS
gl-ES	Galician – Galician	0x0456
ka-GE	Georgian – Georgia	0x0437
de-AT	German – Austria	0x0C07	DEA
de-DE	German – Germany	0x0407
de-LI	German – Liechtenstein	0x1407	DEC
de-LU	German – Luxembourg	0x1007	DEL
de-CH	German – Switzerland	0x0807	DES
el-GR	Greek – Greece	0x0408	ELL
gu-IN	Gujarati – India	0x0447
he-IL	Hebrew – Israel	0x040D	HEB
hi-IN	Hindi – India	0x0439	HIN
hu-HU	Hungarian – Hungary	0x040E	HUN
is-IS	Icelandic – Iceland	0x040F	ISL
id-ID	Indonesian – Indonesia	0x0421
it-IT	Italian – Italy	0x0410
it-CH	Italian – Switzerland	0x0810	ITS
ja-JP	Japanese – Japan	0x0411	JPN
kn-IN	Kannada – India	0x044B
kk-KZ	Kazakh – Kazakhstan	0x043F
kok-IN	Konkani – India	0x0457
ko-KR	Korean – Korea	0x0412	KOR
ky-KZ	Kyrgyz – Kazakhstan	0x0440
lv-LV	Latvian – Latvia	0x0426	LVI
lt-LT	Lithuanian – Lithuania	0x0427	LTH
mk-MK	Macedonian (FYROM)	0x042F	MKD
ms-BN	Malay – Brunei	0x083E
ms-MY	Malay – Malaysia	0x043E
mr-IN	Marathi – India	0x044E
mn-MN	Mongolian – Mongolia	0x0450
nb-NO	Norwegian (Bokmål) – Norway	0x0414
nn-NO	Norwegian (Nynorsk) – Norway	0x0814
pl-PL	Polish – Poland	0x0415	PLK
pt-BR	Portuguese – Brazil	0x0416	PTB
pt-PT	Portuguese – Portugal	0x0816
pa-IN	Punjabi – India	0x0446
ro-RO	Romanian – Romania	0x0418	ROM
ru-RU	Russian – Russia	0x0419	RUS
sa-IN	Sanskrit – India	0x044F
Cy-sr-SP	Serbian (Cyrillic) – Serbia	0x0C1A
Lt-sr-SP	Serbian (Latin) – Serbia	0x081A
sk-SK	Slovak – Slovakia	0x041B	SKY
sl-SI	Slovenian – Slovenia	0x0424	SLV
es-AR	Spanish – Argentina	0x2C0A	ESS
es-BO	Spanish – Bolivia	0x400A	ESB
es-CL	Spanish – Chile	0x340A	ESL
es-CO	Spanish – Colombia	0x240A	ESO
es-CR	Spanish – Costa Rica	0x140A	ESC
es-DO	Spanish – Dominican Republic	0x1C0A	ESD
es-EC	Spanish – Ecuador	0x300A	ESF
es-SV	Spanish – El Salvador	0x440A	ESE
es-GT	Spanish – Guatemala	0x100A	ESG
es-HN	Spanish – Honduras	0x480A	ESH
es-MX	Spanish – Mexico	0x080A	ESM
es-NI	Spanish – Nicaragua	0x4C0A	ESI
es-PA	Spanish – Panama	0x180A	ESA
es-PY	Spanish – Paraguay	0x3C0A	ESZ
es-PE	Spanish – Peru	0x280A	ESR
es-PR	Spanish – Puerto Rico	0x500A	ES
es-ES	Spanish – Spain	0x0C0A
es-UY	Spanish – Uruguay	0x380A	ESY
es-VE	Spanish – Venezuela	0x200A	ESV
sw-KE	Swahili – Kenya	0x0441
sv-FI	Swedish – Finland	0x081D	SVF
sv-SE	Swedish – Sweden	0x041D
syr-SY	Syriac – Syria	0x045A
ta-IN	Tamil – India	0x0449
tt-RU	Tatar – Russia	0x0444
te-IN	Telugu – India	0x044A
th-TH	Thai – Thailand	0x041E	THA
tr-TR	Turkish – Turkey	0x041F	TRK
uk-UA	Ukrainian – Ukraine	0x0422	UKR
ur-PK	Urdu – Pakistan	0x0420	URD
Cy-uz-UZ	Uzbek (Cyrillic) – Uzbekistan	0x0843
Lt-uz-UZ	Uzbek (Latin) – Uzbekistan	0x0443
vi-VN	Vietnamese – Vietnam	0x042A	VIT

Source: https://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo(vs.71).aspx

This type of fee payer x isn’t recognized by our system – PayPal Adaptive Payments SDK

Hey everyone,

Just another Adaptive Payments SDK error I’ve run into.

Error Id: 560027
This type of fee payer x isn’t recognized by our system

This one is fairly self explanatory, valid values are as follows:

SENDER – Sender pays all fees (for personal, implicit simple/parallel payments; do not use for chained or unilateral payments)
PRIMARYRECEIVER – Primary receiver pays all fees (chained payments only)
EACHRECEIVER – Each receiver pays their own fee (default, personal and unilateral payments)
SECONDARYONLY – Secondary receivers pay all fees (use only for chained payments with one secondary receiver)

This parameter is described in the following documentation: https://developer.paypal.com/docs/classic/api/adaptive-payments/Pay_API_Operation/

Cannot parse *.config file – AdaptivePayments SDK (PayPal)

Hey everyone,

Just working on a small project that uses PayPal’s C# AdaptivePayments SDK. I hit an error while attempting to make the following payment:

var service = new AdaptivePaymentsService();
payResponse = service.Pay(payRequest);

“Cannot parse *.config file. Ensure you have configured the ‘paypal’ section correctly.”

at PayPal.Manager.ConfigManager..ctor()
at PayPal.Manager.ConfigManager.get_Instance()
at PayPal.BasePayPalService..ctor()
at PayPal.AdaptivePayments.AdaptivePaymentsService..ctor()

It turns out that you need to add the following entries to your Web.config:

To get the account information you’ll need to do the following:
– Go to developer.paypal.com
– Login to your sandbox account
– Go to the dashboard
– Select accounts (from the list of all your sandbox accounts)
– Create a new one or select an existing business account
– Click profile
– Click API Credentials

Note that the steps required to get this configuration seem to change all the time. Hopefully this will be enough to get you on the right track.

Select Not Showing Selected Values – AngularJs

Hey everyone,

I had a bit of trouble getting a selected option to show up with AngularJs. It turned out that I needed to add an ng-selected attribute:

    {{command.Status}}
    
        Enabled
        Disabled
        Deleted

Check out this Stackoverflow post for more info: http://stackoverflow.com/a/18336858/522859