# Speed limit for data traffic in raspberry pi pico?

**URL:** <https://forum.opencyphal.org/t/speed-limit-for-data-traffic-in-raspberry-pi-pico/1968>\
**Category:** Libcanard\
**Created:** [August 27, 2023, 11:24pm UTC](https://forum.opencyphal.org/t/speed-limit-for-data-traffic-in-raspberry-pi-pico/1968 "2023-08-27T23:24:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Kevin](https://forum.opencyphal.org/user_avatar/forum.opencyphal.org/kevin/32/1431_2.png) [@Kevin](https://forum.opencyphal.org/u/Kevin)\
**Post date:** [August 27, 2023, 11:24pm UTC](https://forum.opencyphal.org/t/speed-limit-for-data-traffic-in-raspberry-pi-pico/1968/1 "2023-08-27T23:24:18Z")

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Hi, I’m currently using the Arduino library 107-Arduino-Cyphal to implement Cyphal data transfer to a Raspberry Pi pico, but when I transfer data too fast (30ms six simultaneous publishes), my pico fails to respond. So I’m wondering if I’m exceeding the speed limit and causing a crash during the enqueue? Or any other reason I don’t know

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**Author:** ![aentinger](https://forum.opencyphal.org/user_avatar/forum.opencyphal.org/aentinger/32/1428_2.png) [@aentinger](https://forum.opencyphal.org/u/aentinger)\
**Post date:** [August 28, 2023, 7:21am UTC](https://forum.opencyphal.org/t/speed-limit-for-data-traffic-in-raspberry-pi-pico/1968/2 "2023-08-28T07:21:43Z")

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Hi @Kevin ☕ 👋

Reasons could be:

- running out of o1heap memory (increase it)
- running out of rx queue memory (increase it)
- increase SPI clock to timely remove received CAN frames from the MCP2515 (it only has 2 receive buffers).

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