Search found 8 matches

by Grant.Bradley
Wed Nov 14, 2018 10:54 am
Forum: Hardware
Topic: ESP32 WROVER-B Radiated Immunity problems
Replies: 2
Views: 4367

Re: ESP32 WROVER-B Radiated Immunity problems

Thanks for your reply. The reason we use the 10V/m is because our product will be used in a marine environment where the level is is determined by EN 60945. This is level 3 which is 10V/m. I think it is the same for industrial environments. We did test at 3V/m above 3GHz and also had a failure at 3....
by Grant.Bradley
Tue Nov 13, 2018 11:34 am
Forum: Hardware
Topic: ESP32 WROVER-B Radiated Immunity problems
Replies: 2
Views: 4367

ESP32 WROVER-B Radiated Immunity problems

We are currently undergoing EMC testing with our product and at the moment we are failing Radiated Immunity testing. This test is reference to EN 301 489-1. The reference is 9.2 Radio Frequency Electromagnetic Field (80 MHz to 6000 MHz) (EN 61000-4-3) We are using test level 3 (10V/m). We are using ...
by Grant.Bradley
Tue Oct 16, 2018 8:18 am
Forum: Hardware
Topic: ESP32-WROVER temperature specification change
Replies: 12
Views: 12947

Re: ESP32-WROVER temperature specification change

Any feedback on this yet?
by Grant.Bradley
Mon Oct 08, 2018 11:34 am
Forum: ESP-IDF
Topic: encryption is working on one device not other
Replies: 30
Views: 29401

Re: encryption is working on one device not other

The WROVER-B modules which we have from our distributor (Mouser) - actual photos: WROVER-B front view.jpg WROVER-B back view.jpg Reading out the e-fuses on these wrover-b shows CODING_SCHEME = 1.... FLASH_CRYPT_CNT Flash encryption mode counter = 0 R/W (0x0) FLASH_CRYPT_CONFIG Flash encryption confi...
by Grant.Bradley
Wed Oct 03, 2018 2:03 pm
Forum: Hardware
Topic: ESP32-WROVER temperature specification change
Replies: 12
Views: 12947

Re: ESP32-WROVER temperature specification change

When do you expect feedback on this? When do you expect the tests to be completed?
by Grant.Bradley
Fri Sep 28, 2018 12:53 pm
Forum: ESP-IDF
Topic: encryption is working on one device not other
Replies: 30
Views: 29401

Re: encryption is working on one device not other

Can you urgently answer these two questions:
If we use the ESP-WROVER-B will Flash encryption work?
Does ESP-WROVER-B willl have efuse CODING_SCHEME=0?
by Grant.Bradley
Fri Sep 28, 2018 10:41 am
Forum: Hardware
Topic: ESP32-WROVER temperature specification change
Replies: 12
Views: 12947

Re: ESP32-WROVER temperature specification change

This change in specification has stumped us now as we are about to comit to expensive EMC testing and then build a first run of production boards in the next few weeks. I need an answer urgently! I need to understand what my options are. i.e. Continue with the current design understanding the limita...
by Grant.Bradley
Thu Sep 27, 2018 10:28 am
Forum: Hardware
Topic: ESP32-WROVER temperature specification change
Replies: 12
Views: 12947

ESP32-WROVER temperature specification change

I notice that on the latest datasheet the max operating temperature on the WROVER has been changed from +85deg C to +65deg C. Can you please explain why? Note. the WROOM is still +85deg C and the PSRAM is rated to +85deg C to the best of my knowledge. My product needs to operate at an ambient of +55...