As of today, 2nd of July 2021. FCM libraries have some bugs due to which it fails to get tokens sometimes in Chrome browsers current version. Errors that occurs : Uncaught (in promise) FirebaseError: Messaging: A problem occured while subscribing the user to FCM: Request is missing required authentication credential. Expected OAuth 2 access token,… Continue reading Firebase Web Push Browser Issue
Free Online Tools or Software for Electronic Circuit Simulation
https://www.circuitlab.com/ Though free but only a few tries for each session. Not much useful. https://www.multisim.com/ This is good. So far I have used for simulating small sections like filters, transistor amplifiers etc. The free version served the purpose. https://www.falstad.com/mathphysics.html Various Simulation tools are there. Yet to explore much. Please note – The information provided here… Continue reading Free Online Tools or Software for Electronic Circuit Simulation
JSON for Creating Paypal Subscription Plan
Hope this save some time for someone. The concept is for each products there will be one or more subscription plan. End users will be presented with the Subscription plans. And they will buy the subscription. The subscription plans can be created from both Paypal Dashboard and using REST API. Here is the REST API… Continue reading JSON for Creating Paypal Subscription Plan
Paypal REST API create products
Request URL https://api-m.paypal.com/v1/catalogs/products Method: Post Header Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx // xxxxxxxxxxxxxxxx is base64 encoded Client ID:Secret // base64_encode(client_id_string:client_secret_string) – note the colon in between PayPal-Request-Id:TEST-REQ-ID-12345 —- This is optional. Passing this will make consequent requests work on same initial Request. Better to omit it. Body { “id”: “YOUR OWN PRODUCT ID”, “name”: “NAME”, “status”: “ACTIVE”,… Continue reading Paypal REST API create products
Paypal REST API get token
Request URL https://api-m.paypal.com/v1/oauth2/token Method Post Headers Authorization: Basic xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx // xxxxxxxxxxxxxxxx is base64 encoded Client ID:Secret // base64_encode(client_id_string:client_secret_string) – note the colon in between Body grant_type:client_credentials Return { “scope”: “https://uri.paypal.com/services/invoicing https://uri.paypal.com/services/disputes/read-buyer https://uri.paypal.com/services/payments/realtimepayment https://uri.paypal.com/services/disputes/update-seller https://uri.paypal.com/services/payments/payment/authcapture openid https://uri.paypal.com/services/disputes/read-seller https://uri.paypal.com/services/payments/refund https://api.paypal.com/v1/vault/credit-card https://api.paypal.com/v1/payments/.* https://uri.paypal.com/payments/payouts https://api.paypal.com/v1/vault/credit-card/.* https://uri.paypal.com/services/subscriptions https://uri.paypal.com/services/applications/webhooks”, “access_token”: “AYYYYYYYYYYWmTopNAjV__Yuk_6AP9RZWQpzxxxxxxxxxxxxxx1ifvHLHrE6RW_Zqjbieo3jcZr9999999999999999lyDA”, “token_type”: “Bearer”, “app_id”: “APP-XYXYXYXYXYXYCCCC”, “expires_in”: 32400, “nonce”: “2021-06-18T16:42:YUKJUKJHTGTYJKHGRRFHFHFGFGBFBG-spy-N9iguUHTJbTgVjht” }