Search found 21 matches
- Thu Jul 04, 2019 8:50 am
- Forum: Hardware
- Topic: ESP32 stops working for no apparent reason in field
- Replies: 15
- Views: 19426
Re: ESP32 stops working for no apparent reason in field
I would suspect a power supply issue with an unstable 3v3 seeing much higher spikes. There is no series diode on the input to the regulator. Use a schottky or fast recovery diode. There is no protection on the 12v. I would use a transzorb or TVS diode across the 12v supply, and include a fuse too. T...
- Mon May 13, 2019 12:52 pm
- Forum: General Discussion
- Topic: Any Free complete course on ESP32. Please help
- Replies: 2
- Views: 8406
Re: Any Free complete course on ESP32. Please help
It's free if you really need it to be, but try to pay something to Neil - there's a lot of work gone into this.
https://leanpub.com/kolban-ESP32
https://leanpub.com/kolban-ESP32
- Mon Apr 29, 2019 9:19 am
- Forum: General Discussion
- Topic: ESP32 on Batteries - your setup
- Replies: 50
- Views: 102405
Re: ESP32 on Batteries - your setup
Here's the schematic and pcb. I'll try to find the firmware when I get home tonight.
- Mon Apr 08, 2019 8:41 am
- Forum: General Discussion
- Topic: ESP32 on Batteries - your setup
- Replies: 50
- Views: 102405
Re: ESP32 on Batteries - your setup
Hi Guys, Just an update on the oil tank level monitor mentioned in an earlier post. The batteries have finally expired, they are now down from 4.5v to 3.8v and the sonar I'm using for depth sensing no longer works although it is still transmitting telemetry every hour. So that's an ESP32 + sensors r...
- Wed Dec 19, 2018 9:50 am
- Forum: General Discussion
- Topic: What would you like to see in The Next Chip?
- Replies: 443
- Views: 939719
Re: What would you like to see in The Next Chip?
This is just speculation for the next (or a future) chip, but maybe it will have a change of processor to RISC-V.
The current Xtensa CPU is a Cadence product and both Cadence and Espressif are members of the RISC-V organisation.
https://riscv.org/members-at-a-glance/
The current Xtensa CPU is a Cadence product and both Cadence and Espressif are members of the RISC-V organisation.
https://riscv.org/members-at-a-glance/
- Wed Dec 19, 2018 9:40 am
- Forum: General Discussion
- Topic: What would you like to see in The Next Chip?
- Replies: 443
- Views: 939719
- Fri Nov 09, 2018 1:51 pm
- Forum: General Discussion
- Topic: What would you like to see in The Next Chip?
- Replies: 443
- Views: 939719
Re: What would you like to see in The Next Chip?
OK. Here's something awesome for the longer term: put an FPGA on the chip! FPGA's are going to be big in the maker community in the coming years. Currently Microchip have the CLC which is of limited use. Cypress have the PSOC, but this is just used to replace the standard peripherals others include ...
- Tue Oct 23, 2018 4:13 pm
- Forum: General Discussion
- Topic: ESP32 and CR2032 battery
- Replies: 15
- Views: 58207
Re: ESP32 and CR2032 battery
The CR2032 is not really a suitable battery. I use 3*AA batteries with a low quiescent LDO 3.3v regulator. It wakes up every hour and sends a data packet over WIFI. Its been running outside for 10 months so far and the battery volts is currently 4.2v. I'm expecting well over a years life out of this.
- Mon Jun 18, 2018 9:07 am
- Forum: General Discussion
- Topic: What would you like to see in The Next Chip?
- Replies: 443
- Views: 939719
Re: What would you like to see in The Next Chip?
https://esp32.com/viewtopic.php?t=1948#p9227dave-in-nj wrote:I still have not seen anyone answer the question of the difference between Vspi and Hspi.....
- Tue May 29, 2018 11:20 am
- Forum: General Discussion
- Topic: What would you like to see in The Next Chip?
- Replies: 443
- Views: 939719
Re: What would you like to see in The Next Chip?
Here's an ESP32 die shot. https://s.zeptobars.com/esp32-HD.jpg.ESP_Sprite wrote: No promises on more RAM, although we're certainly looking at our options. (Issue is that RAM is relatively expensive; iirc, 3/4th of the silicon of the ESP32 is taken up by it.)
Just for fun, can anyone spot the two CPU's.