# SAMD21 + DRV8316 Board
**URL:** https://community.simplefoc.com/t/samd21-drv8316-board/1086
**Category:** hardware support
**Tags:** samd21, drv8316
**Created:** [August 7, 2021, 2:42am UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086 "2021-08-07T02:42:37Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@AdinAck](https://community.simplefoc.com/u/AdinAck)
#### Post date: [August 7, 2021, 2:42am UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/1 "2021-08-07T02:42:38Z")
Hello, I have just made a motor-mounted controller inspired by @Jason_Kirsons board with the help of @runger designed to fit snugly on 41xx motors.
The Altium files and flashing instructions are on the repository [here](https://github.com/AdinAck/Motor-Controller) (WIP).
So far the SAMD21 is able to keep up with controlling motors well enough, and the DRV8316 is also working like a champ (as expected). Motors do not get warm when idle and are essentially silent so it seems to be functioning properly.
The board _should_ be able to work with a supply voltage of up to 40v.
The board also has a USB Type C port and there is a USB protection circuit that pulls DRVOFF high if the USB port is the current source.
Total cost is about $25, assuming you can find stock for the SAMD21G18 ¯\_(ツ)\_/¯
Here is what it looks like:
Any IO stuff (digital read or write for instance) definitely interfere with the FOC loop so I would like to look into redesigning this board with the RP2040 to utilize the dual cores.
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### Author:  [@Jason\_Kirsons](https://community.simplefoc.com/u/Jason_Kirsons)
#### Post date: [August 7, 2021, 8:03am UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/2 "2021-08-07T08:03:28Z")
Nice work!
I like the block title 🙂
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### Author:  [@malem](https://community.simplefoc.com/u/malem)
#### Post date: [August 8, 2021, 6:05pm UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/3 "2021-08-08T18:05:38Z")
awesome! love it. I think I might try it, with a samd51
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### Author:  [@AdinAck](https://community.simplefoc.com/u/AdinAck)
#### Post date: [August 8, 2021, 7:49pm UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/4 "2021-08-08T19:49:57Z")
Haha I just checked the datasheets and I had no idea the pinouts were _exactly_ the same, maybe I’ll get some SAMD51s to put on these boards!
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### Author:  [@xcalplaxis](https://community.simplefoc.com/u/xcalplaxis)
#### Post date: [August 16, 2021, 12:43pm UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/5 "2021-08-16T12:43:13Z")
That’s one nice looking board. Excited to see some motors spinning!
Thanks,
Matt
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### Author:  [@ChrisA](https://community.simplefoc.com/u/ChrisA)
#### Post date: [November 3, 2022, 4:55am UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/6 "2022-11-03T04:55:39Z")
Looking at micro controllers. I can buy aSTM23M4 for the price of a SAM21. The M4 has hardware floating point and CAN bus pins. The crazy chip supply has some M4 cheaper than M0
Multitasking can be make easier with an RTOS. But I admit to ignorance about mixing SimpleFOC and an RTOS although Google finds many people running FOC in a real-time task.
Using a faster uP with hardware math and one of the RTOSes opens up a lot of silly stuff like “Micro ROS”, CAN bus, One is [freertos.org](http://freertos.org), another is [zephyrproject.org](http://zephyrproject.org)
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### Author:  [@hs307](https://community.simplefoc.com/u/hs307)
#### Post date: [August 25, 2024, 2:14am UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/7 "2024-08-25T02:14:12Z")
Hi everyone,
apologies for a duplicate question here. I created a separate post and then realised, the right place to ask this question is here.
I am updating @AdinAck SAMD21 board to SAMD51. I’d appreciate a helping hand on confirming the following please:
We are using ATSAMD51G18A-MF. Considering the SERCOM config, what should be the SPI host pinouts to communicate with 2 SPI devices supporting the simpleFOC firmware?
Currently mapped as -
MOSI- PA12
MISO- PA14
SCK- PA13
SS1- PA18
SS2- PA19
Is this mapping ok?
@AdinAck - thanks for this board design.
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### Author:  [@SdAN](https://community.simplefoc.com/u/SdAN)
#### Post date: [April 11, 2025, 9:24pm UTC](https://community.simplefoc.com/t/samd21-drv8316-board/1086/8 "2025-04-11T21:24:59Z")
May I revive this topic? I am building this board but I am struggling to find the correct motor. It seems that the holes on the board are 12mm apart while I have seen most of the motor have 19mm distance between the screws.
May I ask you which motor you used?
Many thank
Salva