On 17/05/2021 13:35, jon wrote:
On Mon, 17 May 2021 13:08:16 +0100, T i m wrote:
Sort of following on from previous and recent questions around crimping
(and my personal / general preference to both manually crimp (if
available) and solder) here, I just checked out another of Big Clives
Youtube videos on crimping pliers for use on the small connectors you
typically find in electronics gear and specifically the 2.54mm 'DuPont'
connectors we often use with microcontrollers like the Arduino / ESP32,
various sensors and PC mobo headers etc.
One of my latest projects, a 'Charge Multiplexor' allows me to spread a
single good / intelligent (fairly expensive) 12V maintenance charger
over up to 8 LA batteries using Home Assistant home automation system.
An ESP32 WiFi microcontroller driving 8 relays and a INA219 current
sensor monitoring the charge current and voltage (mostly for logging)
that atm I've tacked together in a 3D printed box using wires soldered
directly to the boards and / or screw terminals where supplied.
Now in theory, once built it shouldn't need to be touched again (you can
even change the firmware over WiFi) but I was thinking of what I would
have to do, should I need / want to replace any of the modules in the
future?
So I was going to replace the ESP32 direct soldered wires with the 2 x
19 pin male headers they generally supply with these things and use 2 x
19 way housings (20 ways cut down) with female crimp connectors and with
paint markings on the plug body, ensuring the use of the correct
connector the right way round. Whilst no more than 12 of the 38 pins on
the ESP32 are used for this project, by using 'full length' connector
shells, even if only partially populate means there is less chance of
mis-locating the plug / socket combo. Also, if I use a ribbon cable for
the screw terminal connection to the relay board, it will also remove
any question marks re wire-to-terminal association when I forgot what I
did in the future (or next week even), wire one goes to terminal one,
two to two etc. ;-(
I would then make this my default 'build style' for future projects.
So, watching the Big Clive video:
https://youtu.be/DXLmuDbcLBM?t=1184
He seems to recommend the IWS-2820 crimping pliers, even though he makes
a bit of a pigs ear out of using them himself on the demo g, so I
wondered if anyone else here has crimped this sort of size / style
connector and if they have any thoughts recommendations on the pliers
please? I normally crimp them manually with my Leatherman pliers (that
doesn't actually do the 'crimping' it the way they should but just folds
each ear over in turn) then solder, then crimp the strain relief in the
same way.
Easy to do in the male as any surplus solder can't really do any harm,
not so easy on the female as you can fill the socket. You also have to
be fast to minimise any insulation runback.
Cheers, T i m
Where is the question ?
"I wondered if anyone else here has crimped this sort of size / style
connector and if they have any thoughts recommendations on the pliers
please? "
--
It is not the truth of Marxism that explains the willingness of
intellectuals to believe it, but the power that it confers on
intellectuals, in their attempts to control the world. And since...it is
futile to reason someone out of a thing that he was not reasoned into,
we can conclude that Marxism owes its remarkable power to survive every
criticism to the fact that it is not a truth-directed but a
power-directed system of thought.
Sir Roger Scruton