upi payments
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This DIY ESP32 Soundbox Announces Real UPI Payments in About 2 Seconds, No Merchant Account Needed Walk into almost any shop in India and you will hear it: a small speaker on the counter calling out "Rs 10 received" the moment a customer pays by UPI. Makers have built their own versions before, but almost all of them need a merchant account with a payment gateway, which most students and hobbyists simply don't have. Now techiesms has built an ESP32 payment soundbox that skips the merchant… |
