/diy/ - Do It Yourself

Anonymous Mon Aug 5 08:10:57 2019 No.1660408 [View]
File: 12 KB, 1052x28, 22mA.png [View same] [iqdb] [saucenao] [google]

>>1659280
>>1659748
Me again, gonna put a 1mF cap on the RS232 signal line. After a diode, such that I can feed the unused input through a 7805 to power my circuit without needing an external power source.
Pic related, 22mA is typical output short circuit current, which should hopefully be more than enough even when writing to the micro-SD. My USB tester is showing no current at all (<5mA) when writing to the SD, and I think I trust it.

Advanced search
Text to find
Subject [?]Search by post subject. Leave empty for any.
Username [?]Search for user name. Leave empty for any user name.
Tripcode [?]Search for tripcode. Leave empty for any.
Email [?]Search by email. Leave empty for any.
Filename [?]Search by image filename. Leave empty for any.
From Date [?]Enter what date to start searching from. Format is YYYY-MM-DD
To Date [?]Enter what date to start searching until. Format is YYYY-MM-DD
Image hash
Search in	All Posts OPs Only
Deleted posts	Show all posts Show only deleted posts Only show non-deleted posts
Internal posts	Show all posts Show only internal posts Show only archived posts
Order	New posts first Old posts first
Capcode	All Posts Only by Users Only by Mods Only by Admins Only by Developers
Results	Posts Threads
Action	[ Simple ]

Navigation
View posts	[+24]	[+48]	[+96]

/diy/ - Do It Yourself

Search: