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ESP8266 ESP-01 Old Blue vs New Black 1mbit ai-cloud

Aside from the obvious difference in color these two units are nearly identical. The main difference is that the newer black edition has 1mbit of flash.

If you are using the CHERTS SDK (github here) - then in your MAKEFILE you will need to change the SPI_SIZE_MAP argument sent to esptool.

from:
SPI_SIZE_MAP ?= 0
to:
SPI_SIZE_MAP ?= 2

Here are the possible options:
# SPI_SIZE_MAP
# 0 : 512 KB (256 KB + 256 KB)
# 1 : 256 KB
# 2 : 1024 KB (512 KB + 512 KB)
# 3 : 2048 KB (512 KB + 512 KB)
# 4 : 4096 KB (512 KB + 512 KB)
# 5 : 2048 KB (1024 KB + 1024 KB)
# 6 : 4096 KB (1024 KB + 1024 KB) 

Here is a high resolution photo of the old version of the ESP-01 vs the new one

Page Revision History

2015-09-26 Post Date