DevHeads IoT Integration Server•14mo ago

related to payment, I have ventured into UPI QR generation in embedded devices though it was so bad,

related to payment,
I have ventured into UPI QR generation in embedded devices
though it was so bad, when i see it now

DDhruv I have the code that read and write data to card and validate it using apis.

Marvin•11/20/24, 8:36 AM

what kind of cards are they? just regular NFC?

MMarvin what kind of cards are they? just regular NFC?

melta101OP•11/20/24, 8:37 AM

yep

melta101OP•11/20/24, 8:37 AM

each card
if i am not wrong
hold-iD and amount stored

Marvin•11/20/24, 8:38 AM

I just finished some work on UPI for contact and contactless payments. Very interesting how they do things somewhat detached from VISA and Mastercard.

MMarvin I just finished some work on UPI for contact and contactless payments. Very inte...

melta101OP•11/20/24, 8:39 AM

yep
also 0 commision
best part

Mmelta101 yep also 0 commision best part

Marvin•11/20/24, 8:42 AM

is UPI used a lot in your region?

MMarvin is UPI used a lot in your region?

melta101OP•11/20/24, 9:00 AM

it was made in my country

melta101OP•11/20/24, 9:00 AM

i forgot about cash for so long

melta101OP•11/20/24, 9:01 AM

now a days
if i have to travel anywhere
its just my phone and earpods
no need of wallet lol

Mmelta101 it was made in my country

Marvin•11/20/24, 9:10 AM

Oh wait I see. We are talking about two different UPIs.
On my end it is UnionPay, they also call it UPI on your end it is the Unified Payments Interface. Tell me about it.

MMarvin Oh wait I see. We are talking about two different UPIs. On my end it is UnionPay...

melta101OP•11/20/24, 9:12 AM

Oh damn

Totally did'nt realize it

so basically UPI is a protocol which helps in real-time bank xfers

melta101OP•11/20/24, 9:17 AM

This was mainly introduced because lots of corruption was done using cash.
So when the gov suddenly replaced top currency notes. it gave more push to use UPI

melta101OP•11/20/24, 9:18 AM

so unlike MasterCard and VISA which takes a cut from every payment
from UPI, it doesnt take anything from anyone(buyer,seller, app that integrated UPI)

Marvin•11/20/24, 9:22 AM

that is very neat. And the NFC cards can be tokenized in some app? I am assuming the phone has to be NFC enabled.

MMarvin that is very neat. And the NFC cards can be tokenized in some app? I am assuming...

melta101OP•11/20/24, 9:25 AM

NFC
which dhruv was talking about is different in this context
that NFC is meant to be only used within Metro stations
Every station entry and exit have card reader that help with this

if you want to update the amount, you would need to give to the counter present there to update it.

melta101OP•11/20/24, 9:26 AM

UPI uses UPI ID(which are most often QR code) to xfer money

Mmelta101 NFC which dhruv was talking about is different in this context that NFC is meant...

Marvin•11/20/24, 9:31 AM

Right.

Mmelta101 UPI uses UPI ID(which are most often QR code) to xfer money

Marvin•11/20/24, 9:31 AM

So in order to make a payment, a merchant will scan my UPI QR? Or I scan theirs?

MMarvin So in order to make a payment, a merchant will scan my UPI QR? Or I scan theirs?

melta101OP•11/20/24, 9:32 AM

we scan thier

melta101OP•11/20/24, 9:33 AM

they can request money also from us by scanning

melta101OP•11/20/24, 9:34 AM

now a days
everthing is done with UPI
from elec bill, house rent/maintaince, daily groceries, online commerce etc

Marvin•11/20/24, 9:35 AM

do you have to explicitly move money from the bank to it. Or just link the bank to it for automatic movement?

MMarvin do you have to explicitly move money from the bank to it. Or just link the bank ...

melta101OP•11/20/24, 9:36 AM

the later
it link the bank for money xfer

Mmelta101 the later it link the bank for money xfer

Marvin•11/20/24, 1:01 PM

That is really cool. I have seen many countries have partners that offer Indian tourists the ability to pay using UPI.

MMarvin That is really cool. I have seen many countries have partners that offer Indian ...

ZacckOsiemo•11/20/24, 2:48 PM

is this their M-pesa?

ZZacckOsiemo is this their M-pesa?

Marvin•11/20/24, 2:50 PM

Yes but better than. No changes. M-pesa is notoriously exorbitant. And banks also need their cut.

MMarvin Yes but better than. No changes. M-pesa is notoriously exorbitant. And banks als...

ZacckOsiemo•11/20/24, 2:51 PM

i wish we could take it to other countries seems like you can take UPI to other places.

segfaultdev.elf•11/20/24, 3:02 PM

The event about CAN bus is started devs

ZZacckOsiemo i wish we could take it to other countries seems like you can take UPI to other ...

Marvin•11/20/24, 3:02 PM

That would be soo sweet!

wafa_ath•11/20/24, 4:20 PM

@Undefined it was a really excellent presentation and went soo smoothly , thank you soo much! i hope there is recording for those who miss it @techielew .

Wwafa_ath @Undefined it was a really excellent presentation and went soo smoothly , thank ...

ZacckOsiemo•11/20/24, 4:30 PM

sorry to miss the last end of it, had a meeting.

segfaultdev.elf•11/20/24, 5:37 PM

@Umesh Lokhande Have you worked with zigbee?

Ssegfaultdev.elf @Umesh Lokhande Have you worked with zigbee?

Umesh Lokhande•11/20/24, 5:42 PM

yes, I build some solutions around XBee S2C from Digi mostly using star network topologies

UUmesh Lokhande yes, I build some solutions around XBee S2C from Digi mostly using star network ...

segfaultdev.elf•11/20/24, 5:42 PM

what’s your opinion on stm32wb series ?

Ssegfaultdev.elf what’s your opinion on stm32wb series ?

Umesh Lokhande•11/20/24, 5:49 PM

It's a good solution to implement Zigbee but I'm using XBee even before stm32wb launched. I stick with Digi because of the complete suit offered by Digi like XCTU Software and other aspects like the wide user community around Xbee

UUmesh Lokhande It's a good solution to implement Zigbee but I'm using XBee even before stm32wb ...

segfaultdev.elf•11/20/24, 5:49 PM

I see also you used library or wrote your driver from scratch?

Ssegfaultdev.elf I see also you used library or wrote your driver from scratch?

Umesh Lokhande•11/20/24, 5:53 PM

In the early days, I used the library, and later we moved on to developing our drivers using AT commands. These days I use mostly in API mode

UUmesh Lokhande In the early days, I used the library, and later we moved on to developing our d...

segfaultdev.elf•11/20/24, 5:54 PM

I see

segfaultdev.elf•11/20/24, 5:54 PM

thanks for the informations

Ssegfaultdev.elf I see

Umesh Lokhande•11/20/24, 5:58 PM

It's easier to handle Xbee configuration using XCTU and then use it with high-level programming language. I never had enough time to do everything by my own given tight deadlines to build applications using Zigbee that's why I suggest using Digi's XBee solution

boualleg sabrina•11/20/24, 6:22 PM

hello guys

boualleg sabrina•11/20/24, 6:24 PM

do you have some new ideas about healthcare and agronomy that I can do using AI or IOT

SageBoy•11/20/24, 7:39 PM

@melta101 @ZacckOsiemo hey!.. i am working on the 8085emulator that i was asking..
Here it is https://github.com/vashukashyap/8085Emulator
Can you please review it. It is not fully completed tho.

GitHub

GitHub - vashukashyap/8085Emulator

Contribute to vashukashyap/8085Emulator development by creating an account on GitHub.

SSageBoy @melta101 @ZacckOsiemo hey!.. i am working on the 8085emulator that i was askin...

melta101OP•11/21/24, 4:05 AM

LGTM
but it's quite rare for defining functions in header file

Mmelta101 LGTM but it's quite rare for defining functions in header file

Marvin•11/21/24, 4:13 AM

I agree. @SageBoy you could really do well restructuring the code. And settling on a code style. I'll make it easier to read and go back to maintain/modify

SSageBoy @melta101 @ZacckOsiemo hey!.. i am working on the 8085emulator that i was askin...

ZacckOsiemo•11/21/24, 4:14 AM

oh I wish I had time to look at this, frankly I haven’t even looking into the 8085

MMarvin I agree. @SageBoy you could really do well restructuring the code. And settlin...

ZacckOsiemo•11/21/24, 4:14 AM

perhaps this is where we open issues on the repo if thr author is keen

Mmelta101 LGTM but it's quite rare for defining functions in header file

SageBoy•11/21/24, 6:09 AM

Yup!.. this is the main thing I want to know whether it is right or wrong.

MMarvin I agree. @SageBoy you could really do well restructuring the code. And settlin...

SageBoy•11/21/24, 6:11 AM

Can you point out all the project structure mistakes. I will make it correct.