https://devzone.nordicsemi.com/f/nordic-q-a/37730/custom-pcb-not-detected-programmedHello, I created a custom board with the BMD350 module (it has a nRF52832 chip), and I a trying to program it with the BMD300 eval board. The module on my custom board is powered with 1.8V and I&#39;ve made the following connections: SWDIO - SWDIOen-USTelligent Community 13Tue, 19 Mar 2019 20:06:51 GMThttps://devzone.nordicsemi.com/thread/177176?ContentTypeID=1Tue, 19 Mar 2019 20:06:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6e816210-65ae-4de2-9a77-3296b2c0ba3cjoannas<p>Did this fix the issue? I&#39;m having the same problem when trying with both the BMD 340 and the NRF52840 DK.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/145415?ContentTypeID=1Thu, 23 Aug 2018 07:18:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0d9aa949-09bc-4df6-8df3-a5a28d1ab337Einar Thorsrud<p>Hi,</p> <p>It might be that the programmer has problems programming the device when it uses such a low supply voltage. Can you try to supply the module with approximately 3 V while programming it?</p><div style="clear:both;"></div>