It may be difficult (if not impossible without modifing esp-idf sources) to connect external SPIRAM to ESP32-PICO-D4 even it there is enough room on the board.
It uses GPIOs 16&17 for internal Flash and those pins are used by esp-idf to drive the external SPIRAM.
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What is it you don't like about the LDO?? AMS1117 used on ESP32-PICO-KIT has quiescent current of 5 (11 max) mA and the board can hardly be used for testing/using low power applications (with ESP32 in deep sleep). There are some other LDOs with much smaller qc (e.g. HT7833 4 uA (7 max), or some swi...
If the board is going to be breadboard-friendly the size is not too important (except for the width, so that more bredboard rows remains free). What's wrong with the existing Espressif's ESP32-PICO-KIT Dev. Board which is 20.3x52 mm, available for 9.7 US$ (8.73 US$ if you register), 8.5 € from Mouse...
It's nice to see you've made your own board.
It would be far more interesting if you give some more information, like schematics, bottom layout, does it have sdcard connector, ...
- Fri Sep 07, 2018 1:24 pm
- Forum: ESP32 boards
- Topic: Taking advantage of the second core
- Replies: 10
- Views: 7448
It would be very valuable to be able to run different tasks and/or threads on specific cores. All MicroPython threads runs on the same core as they are using the same MicroPython resources. Many background tasks, including all WiFi/BT tasks, runs on a different core. I'll try to give more details o...
- Sun Aug 26, 2018 9:28 am
- Forum: General Discussion and Questions
- Topic: Calculation benchmark of micropython in different hardware
- Replies: 14
- Views: 2980
Notes on ESP32: If psRAM is used, the results may vary because both Flash and psRAM are cached in internal RAM in 32K blocks. The result may be different depending on if all the used variables are in the in the same 32K block or the new block must be cached from psRAM. It may also vary depending on ...
- Wed Aug 15, 2018 10:52 am
- Forum: Development of MicroPython
- Topic: Anyone port to AArch64?
- Replies: 8
- Views: 1667
Is there any bare metal MicroPython port on ARM (32 or 64 bit) other than this one for RPi Zero.