1mm Banana Plugs - Page 1
Forum section: electronics / testgear

author: Gandalf_Sr
author_rank: Super Contributor
timestamp: September 09, 2019, 01:29:59 pm
content: I was watching Dave in a video where he tests a 2x8 LCD using Bus Pirate and he seems to have wires with small plugs that plug into the 1mm diameter holes in PCBs such as is found on most displays. Can anyone point me to where I can get these in the US (or elsewhere)?

author: janoc
author_rank: Super Contributor
timestamp: September 09, 2019, 02:29:45 pm
content: If you mean this:https://youtu.be/N60WSQc-G_8?t=220That are normal female headers crimped on the wires and covered in heatshrink (on the display side). You can make those yourself or buy wires with female headers pre-crimped on eBay or elsewhere.There are no "1mm banana plugs" - such banana plugs would have unreliable contact, be fairly fragile and they wouldn't fit in most PCB component holes anyway, those are typically designed for 0.7-0.8mm diameter leads. You can see fairly clearly in the video that the pins on the display side are regular header pins soldered into the board and the wires with female connectors are pushed on them.

author: ledtester
author_rank: Super Contributor
timestamp: September 09, 2019, 04:21:27 pm
content: They are also called "Dupont wires/jumpers/cables/connector".You can get them pre-made in various lengths with your choice of male or female connectors on the ends.Available at amazon/ebay/aliexpress, e.g.:https://www.amazon.com/s?k=dupont+jumper

author: Gandalf_Sr
author_rank: Super Contributor
timestamp: September 09, 2019, 05:59:59 pm
content: Quote from: ledtester on September 09, 2019, 04:21:27 pmI have a bunch that look just like those on Amazon but the diameter of the male prongs on mine are about 0.64 mm (measured with calipers) which makes them fall out of plated through holes on new LCDs whereas a 1mm drill shaft is a perfect fit in the same holes.So, ideally, what I want are plugs that fit perfectly into a 0.9 - 1 mm hole, it looked like that's what Dave had in the video I saw.Any ideas?

author: ryanb9
author_rank: Contributor
timestamp: September 09, 2019, 06:05:52 pm
content: These work great for me:https://www.amazon.com/gp/product/B015KA0RRU

author: ledtester
author_rank: Super Contributor
timestamp: September 09, 2019, 06:51:19 pm
content: Quote from: Gandalf_Sr on September 09, 2019, 05:59:59 pmAre you referring to the way Dave attached cables to the LCD PCB here:(at time stamp 1:02 in the videohttps://youtu.be/N60WSQc-G_8)Dave soldered pin headers to the PCB and then used female-male Dupont style cables to connect it to the Bus Pirate LCD adapter board.The smallest banana plugs I've seen are 2mm, e.g.:https://www.aliexpress.com/item/32764954823.htmlandhttps://www.mouser.com/ProductDetail/Pomona-Electronics/5936-0?qs=sGAEpiMZZMtW7Xd10NdmuJ0hw%2FJ5i2UGm1G1ETQ0G8I%3D

author: Gandalf_Sr
author_rank: Super Contributor
timestamp: September 09, 2019, 07:33:34 pm
content: Yeah that was the video but now I see that he soldered in a header and connected using the female end of the Dupont jumper wires - I must've had a brain fart!But you get what I'm after, would be a good idea if someone made them.

author: JxR
author_rank: Unknown
timestamp: September 09, 2019, 11:53:01 pm
content: Quote from: Gandalf_Sr on September 09, 2019, 07:33:34 pmThe contact points are on the top or bottom of the PCB, not through it like a via. Even if you had the perfect diameter pins for the holes it would still be unlikely to make contact. Soldering in some header pins seems like the cheapest and simplest way to make the connection.Micro-hooks or pincers might work if the connections were all in a single row...

author: janoc
author_rank: Super Contributor
timestamp: September 10, 2019, 08:48:19 am
content: Quote from: Gandalf_Sr on September 09, 2019, 07:33:34 pmI would consider making a pogo pin jig instead if I needed that for more than one board.