Search found 63 matches

by doglike
Thu Jan 28, 2021 10:47 pm
Forum: Hardware
Topic: PCB compatibility WROOM-32E and WROOM-32D modules
Replies: 0
Views: 1413

PCB compatibility WROOM-32E and WROOM-32D modules

Hi,

are those modules fully compatible regarding pin-out and footprint ?
Can I exchange one module with the other on my PCB without making any changes on the PCB ?

Thanks in advance!
by doglike
Fri Jan 15, 2021 2:45 pm
Forum: Hardware
Topic: Pin behaviour in case of chip defect
Replies: 6
Views: 4733

Re: Pin behaviour in case of chip defect

Thank you guys for all the valueable input!
I think I will implement an additional external watchdog.
Do you have any suggestion IC for me?
by doglike
Wed Jan 13, 2021 10:21 am
Forum: Hardware
Topic: Pin behaviour in case of chip defect
Replies: 6
Views: 4733

Re: Pin behaviour in case of chip defect

Hi and thanks for your replies!

I also thought about an additional timer/watchdog chip.
But don't you just shift the failure-problem from the ESP to the timer/watchdog?
Then the additional chip can fail...
I am a little bit stuck...
by doglike
Mon Jan 11, 2021 11:41 am
Forum: Hardware
Topic: Pin behaviour in case of chip defect
Replies: 6
Views: 4733

Pin behaviour in case of chip defect

Hi, I have an application (see attachment), where I switch a N-Channel Mosfet with GPIO16 of ESP-WROOM-32E. GPIO16=HIGH switches the Mosfet ON, that switches a solenoid. The state of the solenoid is critical and has to be always in a controlled state. I have a lot code for monitor this (electrical c...
by doglike
Fri Jan 08, 2021 10:51 am
Forum: Hardware
Topic: Schematic review needed
Replies: 11
Views: 9805

Re: Schematic review needed

Question regarding die Reset/EN pin and Bootpin GPIO0:
I have read somewhere, that it is ok, to keep these pins unconnected/floating for normal operation, because there is an internal pullup?
Is this correct?
Or shall I always use an additional pullup ?
by doglike
Sat Nov 28, 2020 7:49 pm
Forum: Hardware
Topic: ESP32 Pico D4 hardware questions
Replies: 1
Views: 1734

ESP32 Pico D4 hardware questions

Hi,

- Does ESP32 Pico D4 SIP have a CAN 2.0 controller (like ESP32 WROOM module)?
I believe yes, but cannot find any official information...

- Can this SIP run @ 240MHz ?


Thanks in advance!
by doglike
Fri Oct 30, 2020 11:52 am
Forum: ESP-IDF
Topic: Can't flash ESP32 on Ubuntu VirtualBox
Replies: 2
Views: 3920

Re: Can't flash ESP32 on Ubuntu VirtualBox

If I am not wrong, there should be a menuconfig option for the port configuration...
by doglike
Thu Oct 22, 2020 9:56 am
Forum: ESP-IDF
Topic: Simple questions about SPIFFS wear levelling
Replies: 3
Views: 5177

Re: Simple questions about SPIFFS wear levelling

SPIFFS becomes corrupt very fast, if something unexpected happens (eg. power-off during access). It also becomes very slow at a filling level @ ~50%. I also spend days after days with this issues and testing around with SPIFFS and FATFS. For me the best solution was to migrate to LITTLEFS. https://w...
by doglike
Tue Oct 20, 2020 11:45 am
Forum: ESP-IDF
Topic: wifi task on core0 influences precessing speed of core1 tasks
Replies: 3
Views: 3745

Re: wifi task on core0 influences precessing speed of core1 tasks

Hi,
thanks for your reply.
I read your post several times (hard to understand)...
Do you mean, that it could help to kick out all wifi related functions out of IRAM ?
Any idea, how I could realize this?
Thanks in advance!
by doglike
Wed Oct 14, 2020 1:53 pm
Forum: ESP-IDF
Topic: wifi task on core0 influences precessing speed of core1 tasks
Replies: 3
Views: 3745

Re: wifi task on core0 influences processing speed of core1 tasks

Nobody an idea? :(
Or is this the normal behaviour and there is nothing to do...?