20210702_213117
This is the UPS3 v4 board, substituting a DROK Microbuck converter for the linear LM340T5 regulator. The ESP8266, really a ESP8285, remains as the standard controller for this uninterruptible power supply. An ATTiny44 is programmed as a serial to parallel converter to control the voltage switches. This board was made at Oshpark. Nicely done!
300
views
3
faves
0
comments
Uploaded on July 8, 2021
Taken on July 2, 2021
20210702_213117
This is the UPS3 v4 board, substituting a DROK Microbuck converter for the linear LM340T5 regulator. The ESP8266, really a ESP8285, remains as the standard controller for this uninterruptible power supply. An ATTiny44 is programmed as a serial to parallel converter to control the voltage switches. This board was made at Oshpark. Nicely done!
300
views
3
faves
0
comments
Uploaded on July 8, 2021
Taken on July 2, 2021