# SparkFun MicroMod nRF52840 Processor (WRL-16984) **URL:** \ **Category:** Sparkfun\ **Created:** [2 February 2022 02:33 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996 "2022-02-02T02:33:44Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Core](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/core/32/57_2.png) [@Core](https://forum.core-electronics.com.au/u/Core)\ **Post date:** [2 February 2022 02:33 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/1 "2022-02-02T02:33:44Z")
This is a placeholder topic for [**“SparkFun MicroMod nRF52840 Processor”**](http://core-electronics.com.au/catalog/product/view/sku/WRL-16984) comments. ![](https://core-electronics.com.au/media/catalog/product//1/6/16984-sparkfun_micromod_nrf52840_processor-04.jpg) Featuring the nRF52840 SoC from Nordic Semiconductor, the SparkFun MicroMod nRF52840 Processor offers a powerful combination of ARM Cortex-M4 CPU and 2.4 GHz Bluetooth … read more [**Read more**](http://core-electronics.com.au/catalog/product/view/sku/WRL-16984) ---
**Author:** ![Nguyen189513](https://avatars.discourse-cdn.com/v4/letter/n/a3d4f5/32.png) [@Nguyen189513](https://forum.core-electronics.com.au/u/Nguyen189513)\ **Post date:** [2 February 2022 02:33 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/2 "2022-02-02T02:33:45Z")
Hi, How do you fix this product if it is wrecked? ---
**Author:** ![James](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/james/32/4400_2.png) [@James](https://forum.core-electronics.com.au/u/James)\ **Post date:** [2 February 2022 02:35 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/3 "2022-02-02T02:35:30Z")
Hi Nguyen, Could you elaborate a bit on what damage your module has? Did you purchase it from Core? Keen to get to the bottom of this one! -James ---
**Author:** ![Nguyen189513](https://avatars.discourse-cdn.com/v4/letter/n/a3d4f5/32.png) [@Nguyen189513](https://forum.core-electronics.com.au/u/Nguyen189513)\ **Post date:** [2 February 2022 06:26 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/4 "2022-02-02T06:26:20Z")
Hi James, Thanks for the reply. Yes the nRF52840 is from core electronics. I have run a 5V supply into the same terminal strip as the 3.3V pin from the MicroMod. I realised it a few seconds later. The MicroMod does not seem to connect to my computer anymore after that. Is there a way to fix this? Thank you in advance, ---
**Author:** ![Liam120347](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/liam120347/32/5003_2.png) [@Liam120347](https://forum.core-electronics.com.au/u/Liam120347)\ **Post date:** [2 February 2022 07:16 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/5 "2022-02-02T07:16:51Z")
Hi Nguyen, Unfortunately it looks like the 3v3 pin is an output, so I’d say this one has had it. As an alternative I’d check out this breakout: [Nordic Semiconductor nRF52840 USB Dongle | Core Electronics Australia](https://core-electronics.com.au/nordic-semiconductor-nrf52840-usb-dongle.html) ---
**Author:** ![Nguyen189513](https://avatars.discourse-cdn.com/v4/letter/n/a3d4f5/32.png) [@Nguyen189513](https://forum.core-electronics.com.au/u/Nguyen189513)\ **Post date:** [2 February 2022 08:35 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/6 "2022-02-02T08:35:25Z")
Hi Liam, I guessed so. Thank you. Another problem, I have with the other MicroMod nRF52840 processor (same type since I’ve gotten 2) is when I upload the code with wrong selection board (instead of ‘Sparkfun MicroMod…’ I selected ‘Arduino Nano…’), it stopped connecting to my computer. It seems to want to connect initially but disconnect afterward. Any suggestion? ---
**Author:** ![Liam120347](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/liam120347/32/5003_2.png) [@Liam120347](https://forum.core-electronics.com.au/u/Liam120347)\ **Post date:** [2 February 2022 08:39 UTC](https://forum.core-electronics.com.au/t/sparkfun-micromod-nrf52840-processor-wrl-16984/12996/7 "2022-02-02T08:39:09Z")
Hi Nguyen, Can you see it popping up in the COM ports when you plug it in? I havent used that board myself so cant advise but its a good place to start