Post by papa on Apr 20, 2019 13:33:36 GMT
Make Connections without Solder
Sometimes (as with re-programming an ESP82xx device) we may want/need to make temporary electrical connections without soldering & desoldering
. Some things like earlier Itead ESP82xx devices provide a header of 4 programming holes, but other devices (like a more recent Itead S26 ECOPlug) may not provide such convenience. What can we do then?
To connect to desired locations, I have used dupont cables, hair clips, alligator clips, grabber clips, test clips
. I use cellophane or electrical tape to insulate pads
I don't want connected.
In this post
, see my home made programming jig
that used waste plastic, alligator clips, & "whiskers" from resistor leads.
Next, More Examples of Devices Used
<< Paired, color-coded Alligator clips
connected by a wire, one source here
Post by papa on Apr 20, 2019 13:41:31 GMT
Make Connections without Solder, More Examples of Devices Used
<< hair clips, one source here
The hair clips I want are flat
where the two prongs come together & have no inner "teeth."
Sometimes I bend in the point of the shortest prong so it can clamp onto a small pad.
<< test clips with hook, one source here
. These have a small hook that extends when the plunger is pushed.
<< grabber test hook clip
, one source here
. These have a tiny "pincher" that extends when the plunger is pushed.
In another thread, I'll document how I used some of the above devices to re-program an Itead S26 ESP8266 ECOPlug
Post by papa on Apr 27, 2020 18:23:18 GMT
Dupont Cables for Connections
As much as possible, I prefer to plug projects together. This makes it easier to replace defective parts, relocate misplaced parts, & reuse parts for other purposes. My projects are still reliable.
^^ I often use dupont cables to make connections in my projects. They are color-coded insulated wires of at least two different lengths. Their ends can be male (M) to M, female (F) to F, or M to F. The M ends fit ok in Arduino sockets & F ends are similar to Arduino sockets.This link
displays a variety of dupont cables from a U.S. supplier I like. Many more possibilities are available online.
Post by papa on Apr 27, 2020 19:28:26 GMT
Attach Dupont Connectors
Sometimes we have project parts that cannot very well be attached to a socket or a pin
. For example, a DS18B Temperature Sensor has a cable of 3 insulated wires that are not solid. What then?
See this ebay search
<< Female Dupont connector, much enlarged
. We can purchase & attach Dupont connectors, male & or female
. We can also get housing to cover the connectors, but I often rob these covers from dupont cables.
With care & practice, one can use needle nose pliers to crimp a connector to a bared wire & adjacent. This SN-28B Crimping Tool
also takes practice, but gives better results in attaching Dupont connectors to a wire.
<< SN-28B Crimping Tool