I’m working on a project using the MKR GSM 1400 and a custom shield for remote monitoring but up to 5 devices have how broken. It appears that the ESD protection diode PRTR5V0U2X ( https://assets.nexperia.com/documents/data-sheet/PRTR5V0U2X.pdf ) is burning out although I may be mistaken. See below: …

I don't have a MKR 1400 GSM but a quick look on the official Arduino website seems to indicate that the supply voltage should be 5V at 2A (or more). I can't see any reference to a higher DC voltages as a power source. EDIT: Re the booting issue, the Arduino website says: Communication over cellul…

I have tried using various power supplies (for the project batteries are not an option) and using a 5V 2A power supply the Arduino re-booted on GSM. It was only after increasing the supply to 12V 3A that the device worked reliably.

Admittedly, I'm only looking at the MKR 1400 GSM schematics here, but I can only see a 2-pin LiPo battery connector and a micro USB connector (and the antenna connector too). The LiPo connector is for the battery (probably around 3.7V) and the USB connector shows +5V. There's also the VIN pin. The …

Curently powerring the board though the VIN pin. originally a 5V 2A power supply was used but this lead to the board restarting when ever GSM was turned on. Could something else be causing this?

Vin has a range of 5V to 6V as per my quote from the reply #4 above (quoted directly from the Arduino MKR 1400 GSM specs on the website). If you've applied 12V to Vin, then it's very likely the cause of the damage. You might be able to replace the PRTR5V0U2X, but that may be a fruitless exercise if …

This is interesting. If Arduino say them selfs that 12V works what could be destroying the ESD protector.

MKR GSM 1400 ESD Protector Damaged

Official Hardware MKR Family MKR GSM 1400

barryn July 22, 2021, 3:44pm 7

Looks like you can apply up to 12V OK - MKR 1400 Max VIN voltage?

Topic		Replies	Views
Power supply VIN MKR1400 MKR GSM 1400	3	2862	February 25, 2020
Edge Control + MKR GSM 1400 + RESET button => frozen boards Edge Control	11	182	September 5, 2026
Can't send SMS fro MKR GSM 1400 stacked onto Connector Carrier MKR Shields	8	529	August 21, 2023
Power MKR1400 with Vin MKR GSM 1400	6	4764	May 9, 2018
MKR 1400 Max VIN voltage? MKR GSM 1400	2	5026	May 18, 2018

MKR GSM 1400 ESD Protector Damaged

Related topics