pcb; pcb-design; pcb-fabrication; panel; panelize; pcbguy. It provides 26 GPIO pins, three of which can function as analogue inputs, on 0. Is there any way of accessing extra GPIO pins from the high density connectors or from the castellated pins via the machine control module? My alternative I think will be to use a C33 and build a PCB to allow use of the maximum number of GPIO pins from the high density connector, something similar to this but for 24V:. 83; asked Mar 1, 2021 at 20:18. Plated half-holes or castellated holes are plated half holes with half on the edges of the board. 1″ debug connector. One major challenge is the decoupling capacitors on the bottom of the PCB. Price is $11/pair before June 1st, $15 a pair afterward. BT832XE-p, Bluetooth 5. Spring Pins. The combination between the MS9358 nut and the NAS670x bolt is good regarding very similar strengths and resistances, but not regarding mounting and locking them with cotter pins. The agitator designs investigated were a standard pin type and a CSIRO designed double helical screw stirrer. 9mm packages with 16 castellated pins for applications needing a limited number of GPIOs. Place the footprint so that the middle points of the holes are on the center of the edge cut. Castellated holes provide reliable connections suitable for modular designs and SMT components. It allows for easy insertion and removal of modules without the need for soldering. Recommendations and comments When castellated features are required, it is best to use the following general rules when at all possible . It allows for easy insertion and removal of modules without the need for soldering. Discard the pin and fit a new one later. The board uses well known Pro Micro footprint with castellated mounting holes. Designers use. RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom Dual-core ARM Cortex-M0+ processor, flexible clock running up to 133MHzBut from the required pins for the UART to work, the only castellated pins are 3V3, GND, P026 (Wake up), and P003 (COMD). Castellated pins at 1. 35mm), please use the Advanced PCB service. The castle nut must be in a certain orientation to allow the cotter pin through. In Stock. History of Castellated Holes Castellated holes are used on small modules as an alternative to pin-header mounting. BC832, micro Bluetooth 5. Their main advantage is that they allow an electrical. Two types of pins are available to meet different application requirements. 15x20. - Slots (called castellation) in the nut are designed to accommodate a cotter pin or lockwire for safety. I would love to see an RP2040 in a 32QFP package with 0. Verify solder joint quality . Flat rate shipping is available within the USA via USPS, and worldwide via FedEx or DHL International Express. The cotter pin loop should be touched by the looped end of the cotter pin before it is inserted through the hole. BT832A: BLE 5. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. For description of female headers, please refer to Header Blocks. 9mm or 15x20. bask185: Castle nuts are believed to have been named after the openings of parapets because of their likeness to the battlements found on top of ancient castles. Operating at 3. Cotter pins are not included. 2mm. FL, approtect version. This paper presents test results and analyses of safety lock wire and cotter pins with castellated nuts used as locking features in threaded fasteners. 5 mm. BC832, micro Bluetooth 5. Thread Size All 1-14 1/2-20 1/4-28 10-32 3/4 -16. 04×25. Learn more. Single-chip USB to UART bridge provides transfer rates of up to 3. 1. NanoS3 TinyS3 ProS3 FeatherS3. Teensy footprint library for KiCAD. 00. This uses version 2 of our patented literal edge of the board connector which is smaller and more robust whilst being fully compatible with version 1. The RP2040 is plenty powerful, low-cost, and makes for an excellent keeb driver chip. BC832, micro Bluetooth 5. 8mm pitch package and 18-20 available gpios. As well as female pin headers, the board includes unpopulated pin headers and castellated pins on its edges — making it surface-mountable as a module, should anyone wish to solder it down. 8 & up: $6. We will walk through two key points that render many castle nut bolted joints ineffective and unreliable. Our robust PCB module test sockets have a variety of customized layouts optimized for use across multiple test applications. To ensure reliable manufacturing and assembly, it is important to have castellated holes with good mechanical strength that prevent issues like delamination. But if you find yourself mystified by castellated pads, take a look at this pogo pin programmer built for ESP8266s. The bolt or axle has one or two holes drilled through its threaded end. It includes specifications for cotter pins from 1/32 00to 3/4 diameter and 1/4 00to 6 length for various materials and coatings. 4GHz. Castellated module allows soldering directly to carrier boards; USB 1. The thinner AN320 castellated shear nut has half the tensile strength of the AN310 and is used with clevis bolts which are subject to shear stress only. ApplicationsThe Pico DVI Sock, though, is considerably smaller. Think about an Arduino hat or shield board form factor; instead of. Operating temperature: -40°C to +85°C. It would be a simpler solution than the others. Find the best rolling pin for your needs with our selection of wooden and non-stick options. 2 GPIO on QT port that can be easily accessed for 5×15 keyboard layouts. SMT equipment is not required for soldering castellated pins. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 1 Modules, BT40/F/E Ver 0. The topic of castellated pins has come up a couple times before in this thread. It’s a clever trick that could be modified. The effect is similar to using a castellated nut. BT40F mechanical drawings, top view 9I assume the copper to edge clearance setting in the Board setup, Design Rules section is what is keeping you from starting a route from the castellated pin. alignment with the cotter pin hole at the minimum. You might be able to use it with 1. You do not need to lift it out completely: the leverage of a socket wrench is enough to flatten any remaining lumps. 5 mm. 59. Additional 24 LGA (Land Grid Array) pins provide access to 29 GPIOs of nRF52832. 14 castellated pins, easy for production. Do not drive any digital pin higher than 3. Two types of pins are available to meet different application requirements. 6V Operation temperature: -40°C to +85°C QDID: 138610 FCC ID: X8WBC805M ISED ID: 4100A-BC805M CE: Compliant (including EN300 328 V2. e. XIAO ESP32S3 Sense PinoutsFor those that want to attach the LRA motor separately from the board, you will need to solder wires between the Qwiic Haptic Driver board's castellated pins. Surface mount pads work well, but through. SMT equipment is not required for soldering castellated pins. (See figures I, 2, and 3. These pins configure the electrical connection of a sub-module to the main board. Simply because they are not part of the official feature set so what you do is really a workaround and workarounds come with certain restrictions. Castellation metal loop connector. This can significantly. Castled: having or furnished with castles. Place a via whose drill lies inside the pads. • 24 LGA (Land Grid Array) pins to access all 32 GPIOs of nRF52832 when needed. 20 x GPIO pins with following capabilities: 18 GPIO on castellated/pin breakout pads. This technology features plated-through holes (PTH) along the edges of the board, which create a connection between the board and other components in a circuit. They share many of the same characteristics as traditional nuts. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesFeatures castellated pins for automatic assembly lines; Overview. 49 ). The SOM9331 is a Single Board Computer (SBC) with 8MiB of NOR flash and 64MiB of ram. Sometimes, users may have different layout requirements for their contacts. The red power LED doesn't light up when running off battery. WT02E40E Series modules support 4 radio interfaces with various antenna options. Integrated shield to resist EMI. appearance(). Typically, these are applied to the outer edges of a board, and are used. 2" 0. PCB snaps directly onto the Edge-Connect™. forencich' and '@Tony Stewart Sunnyskyguy EE75' these parts are called castellated edges, castellation, castellation. Sometimes, users may have different. It is made by the Chinese manufacturer OpenEmbed and comes in two form factors: a System on Module (SOM) with castellated pins, and an SBC with the hardware peripherals broken out; including 3x100Mb Ethernet ports, USB to UART for. Here are some steps explained that show how. • 16 castellated pins for application needing limited number of IOs. It is fairly rugged and can withstand large tensional loads. The pins are not included in the package with the board. Don't forget to follow us on social to stay up-to-date on. The castellated holes can serve as a direct electrical connection between the PCB and other components, reducing the need for additional connectors or wires. • 16 castellated pins for application needing limited number of IOs. 75. 1 module BC840M, BC840, BC840E, Compact nRF52840 modules27x GPIO including castellated headers; JTAG pins on the header; TinyPICO/TinyS3 compatibility; FAQ. In this video, one of our resident fastener specialists talks about castle nuts. Here are some steps explained that show how castellated pins are created: PCB Design: In the PCB design phase, you define the shape and location of the castellated pins on the board’s edge. Using these castellated holes, we can change the pin layout of the component as we desire. This special cable has a 6-pin EC06 Version 2 Edge-Connect™ connector and a 10-pin 0. jpg 4,608 ×. • Half holes with small cuts. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. But I also want to minimize the height above my PCB as much as possible. And this is only for prototyping. 6 KB. I need a connection similar to this - 5x pogo pins on one side, 5 receptacles on the other side. FlexyPin is a connector pin designed to be used with castellated modules with pitch down to 1. model 172 series service manual 1-11. Castellated nuts, often called a castle nuts, employ cotter pins as a locking mechanism. The through-hole pads have castellated edges for each pin to add a lower profile in your projects should you decide to build it into another assembly during production. Traditional bolts, of course, are solid. It is the best module for Matter applications. Depending upon the application, instead of half holes, they may also look like a small or larger portion of a broken circle. As such, it’s very…Two types of pins are available to meet different application requirements. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 16 castellated pins. BT832A/BT832AF is a Bluetooth Low Energy, BLE 5 module using Nordic nRF52810 SoC with an integrated PCB trace antenna. So if you make pads that are say 0. Breadboarding a castellated SMD daughter board. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesBC832, micro Bluetooth 5. Technician A says technological innovations in today's. However, there is a potential for a different DRC issue. • Integrated shield to resist EMI • 40 MHz main crystal on board. The compact board is very clearly inspired by the Raspberry Pi Pico, borrowing the same overall layout and handy castellated pins which make it suitable for breadboard use and surface mounting as as module. 902 to 928 MHz. 05″ pitch ribbon connector. The module form factor is compatible with Portenta and MKR ranges and features castellated pins – friendly for automated SMT assembly on application specific carrier boards. Rolling Pins. BC832, micro Bluetooth 5. 1" centers then a prototype pcb could be used to hold the pogo pins in place. Extend the bottomside pad area of the castellated pin so that you have a larger target to hit with a standard spring probe from the bottom side. I would assume my only real option is to solder breadboard jumper wires onto the pins I need and leave the rest floating. Nylon lock nuts on the gear to fuselage attach and cabane Vee attach. 22 each at 1K pcs. • 45 LGA (Land Grid Array) pins to access all 48 GPIOs of nRF52840 when needed. Castle Nuts (DIN 935) Castle Nuts are made to DIN 935 and are often used alongside a bolt or a threaded rod that feature a pre-drilled hole, where a cotter pin can be used to secure the fixing and prevent movement. Modules for M. This can result in lower signal loss and improved signal integrity, especially in high-frequency applications. FlexyPin. It has 16 castellated pins for applications needing limited number of GPIOs. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 54mm adapter, by bending odd pins 90° right and even pins 90° left in. 8. Castellated holes combine two PCB boards and validate the joint quality of the soldering. Our capabilities range from packaged IC devices to leadless packages to castellated contacts and varying pin pitches to high-pin count devices. 14-pin Castellated Board-Edge Connector to 14-pin 0. Report comment. • 24 LGA (Land Grid Array) pins to access all 32 GPIOs of nRF52832 when needed. 3V operation on a single board while adding a Qwiic connector to the rear and USB Type-C to the. CrossRoads April 27, 2021, 12:38pm 14. Product Type All Cad plated Stainless steel. The R7FA6M5BH2CBG microcontroller of the Portenta C33 uses the Arm® Cortex®-M33, a 32-bit processor that offers efficient performance, low power consumption, and advanced security features,. It’s used in PCB modules which can be soldered to other PCB’s. WT02E40E, Quad-Radio, nRF7002 WiFi 6 and nRF5340 BLE 5. The holder would be laser cut or 3D printed I would assume. One reason to use holes is to fit the edge holes for some standard width so that the castellated board can be soldered to pin headers, although extra holes inside the board outline may also be used for that if there’s enough room. Castellated PCBs can act as breakout boards for a particular area of a larger PCB. Castellated or Castle nuts are used with drilled-shank bolts, clevis bolts, eye bolts and studs. Once this is done, bend the legs of the cotter pin in opposite directions, forming a secure and tamper-resistant connection. 2. Footprint for Castellated Pins Hardware Nano Family Nano Every placebo0311 April 26, 2021, 2:44pm 1 Not sure where to post but thought I would start. USB-to-UART Bridge. Castellated nuts are nuts with a crenelated collar on one face, allowing them to be held from rotation by either split pins or lockwire. This is very important. If a washer was provided, it should be placed under the nut before installation. Thought I was good to go. 1″ connector such as found on the standard J-Link debuggers). These locknuts are also referred to as a ‘Castellated Nut’, and are ideal for use in applications where vibrations may undo a fixing. Castellated Grounded Seal Ring: VLLD: Alumina: ENEPIG: Yes: QFN-8848. Designed, as with Raspberry Pi's own RP2040-powered gumstick-style Pico board, with castellated pins, the Stamp can be used with pin headers — but is equally well-suited for use as a surface-mount module. The $5. In this OnTrack episode, Ben Jordan goes in depth on design considerations for castellated modules. 2 GPIO on QT port that can be easily accessed for 5x15 keyboard layouts. 54 mm, and a pad diameter of 1. 4" 0. 0mm. Stainless Steel Locknuts for use with Cotter Pins. Uses an integrated horizontal chip antenna for both 5GHz and 2. Additional options include castellations, plane or grounded seal ring and custom pin counts. castellated meaning: 1. Size of this micro module is 7. Today’s Diminutive Device is a small castellated System-On-Module (Twitter link, nitter proxy) from [MangoPi] called M-Core, with a quad-core A53 CPU and 1 GB of RAM. FlexyPin works great for flashing/testing jigs and other use-cases where castellated modules are involved. 50 each at 1 pcs; $2. This uses version 2 of our patented literal edge of the board connector. 7N-AU-0. V), the voltage at this pin will be about 4. If your problem is pitch-related, maybe you can save the day with a breakout board . Additional 24 LGA (Land Grid Array) pins provide access to 29 GPIOs of nRF52832. The installation differs in that the bolt or axle has one or. 8x1. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesI think the easiest way to use something with Castellated edges would be to made a board to mount it to add normal through hole connector to the board. 5mm and they should be separated by a spacing of at least 0. 2. Plus, you can switch your pins according to your requirements. 05″ pitch female IDC that mates with the FTSH-105 style micro-headers compatible with i-Jet and ULINK pro. It allows for easy insertion and removal of modules without the need for soldering. 3mm, L. These female headers are connected to pins of the module mounted on this board. Schematic and footprint. installation of cotter pins 1-16 revision 1. bask185:Castle nuts rely on cotter pins and protruding triangular sections to create a formidable locking mechanism that can withstand a lot of vibration and movement. 0x2. 20 x GPIO pins with following capabilities: 18 GPIO on castellated/pin breakout pads. The keyhole is proper when redesigning the pin. _____We design and manufacture IC and WLCSP test sockets to meet your specific physical, electrical, and environmental test requirements. The cotter pin loop should be touched by the looped end of the cotter pin before it is inserted through the hole. Elsewhere, the specifications are unchanged: It's driven by a Microchip. • 16 castellated pins for application needing limited number of IOs. . Wish List. If this term is new to you, it’s pretty simple, you’ve certainly come across them if you’ve ever played with a bluetooth or wifi module because. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. • 16 castellated pins for application needing limited number of IOs. The lowest cost: $2. I have actually undertaken to create a brand-new replacement cable for the Virtual Boy, which I call the VirtualCable. The XIAO board is a castellated pin design that can be surface mounted or used with male or female Dupont pins. If the. BT832 and BT832A mechanical drawing, top view !847,987. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesShare on Twitter Share on Facebook Pin It. 8x1. (📷 SparkFun) SparkFun's popular Arduino-compatible Pro Micro development board has received something of a refresh, and the latest revision cuts the complexity by combining 5V and 3. size: Quantity: Add To Cart. V ), the voltage at this pin will be about 4. Refitting taper roller hubs with castellated nut and split pin If the hub has been removed or bearing adjustment is required, the following adjustment procedure must be followed. Specifications are: Max TX power: +29. Bearing Adjustment Procedure for Single Castellated Nut STEP 1 . So i’ve bought some 1. 2 GPIO on QT port that can be easily accessed for 5×15 keyboard layouts. Recommendations and comments When castellated features are required, it is best to use the following general rules when at all possible . e. The second time a module is heated up in the reflow oven the module will approach a molten solder phase but it won't quite make it. 5mm and they should be separated by a spacing of at least 0. Our Steel Form Pins come with a machined point designed to drive form pins through the hardest subgrades including frozen ground. Solder the black wire to the castellated pin (which is connected to DA7280's OUTN pin) that is. Castellated pins, also called castellations or half-holes, are made a PCB board during the manufacturing process. Lastly, split apart the tails and wrap them around the castellated nut on both sides. 50 each at 1 pcs; $2. This kind of edge where the board edge goes through plated holes and the holes are cut in the middle is called castellation castellated edge plated half-holes semi-plated holes etc. Place another similarly sized pad at the same x,y on the bottom layer. BC832, micro Bluetooth 5. A castellated nut, sometimes referred to as a castle nut, is a nut with slots (notches) cut into one end. 20 x GPIO pins with following capabilities: 18 GPIO on castellated/pin breakout pads. Castellated holes are used on small modules as an alternative to pin-header mounting. Six of the pins can be capacitive touch inputs. Of these 14 pins, 11 can be analog inputs or digital I/O. Easily change the pin layout of components. Castellated Nuts, or castle nuts, are specialized types that feature three notches on one end, giving the component the appearance of a castle battlement. Availability: Samples. RSS Feed. There are very little documents on how to design the pads for receiving the castellated daughter boards. • 16 castellated pins for application needing limited number of IOs. I have not found any specific information pertaining to the torque value for the castellated nuts. 4 12 bit ADCs; 2 I2C, 2 SPI and 2 UART peripherals, we label one of for the ‘main’ interface in standard Pro Micro locations; 16 PWM outputs - for servos, LEDs, etc2. You could provide a seperate breakout board that connects to 2 rows of header pins for people that want. Finally, its ultra-low power consumption makes 24/7 always-on sensor data processing possible, with the option of battery-powered standalone operation. Can I map pins 101 and 102 in software to couple of the castellated pins. The standard specifies 4, 6, 8, and 10 pin varieties (mapping to sizes of available connector, the ‘010’ in the number above specifies pincount) offering increasing levels of connectivity up. BC832, micro Bluetooth 5. All Toshiba TC35680-FSG GPIO pins are accessible. Commonly used software areAltium Designer, Eagle, and. RN-25 Bluetooth 3. In order to finish the castellated nut installation, the cotter pin needs to be secured around it. Castle. 5mm. Hey hey, the stock Pico has castellated pins, so it's fairly easy to directly solder it onto the pcb directly. For [Nick Johnson]’s Hackaday Prize entry,. 5V. KiCad might complain that the pad is intersecting the board edge. The smallest GreenPAC device has 12 pins stuffed into a 1. 6. 2 GPIO on QT port that can be easily accessed for 5x15 keyboard layouts. The castellated shear nut, AN320, is designed for use. Cotter Pins: The Perfect Companion. As announced at Maker Faire Bay Area, the Nano 33 IoT is part of the new 3. Holding a multimeter probe (even if it's a PCBite) up to it by hand would be a nightmare so, I designed a little test jig that uses 0. For a flush connection, we recommend cutting the male header pins and stripping the wire. Air Force-Navy AN310C-10 Castle Nuts comply to spec QQ-P-35 and are constructed of steel with a stainless steel surface treatment for corrosion resistance. Connects directly to the literal edge of the PCB. For applications needing limited number of IO pins, prototyping and production are easier using 16 castellated pins. Castellation is made so that there are normal PTH pads first and they are surrounded by. A stick-on antenna is included with the board in the traditional Seeed Studio XIAO packaging. BC832, micro Bluetooth 5. For prototyping, if the pins are spaced correctly, you can solder them directly onto the copper side of stripboard (Veroboard). With 20 GPIO available (18 on castellated pins, 2 on STEMMA QT port) you can easily make up to 100-keys matrices, or common 65% 5x15 layouts. Create a footprint or several footprints which have the holes and their copper pads. Note to self. In this video we show you how to solder the castellated. Four 12 bit ADCs; Two I2C, Two SPI and two UART peripherals, we label one of for the 'main' interface in standard Pro Micro locations; 16 x PWM outputs - for servos, LEDs, etcBC832, micro Bluetooth 5. 08" x 0. After placing the hub, bearings, washers and spindle nut back on the axle spindle in reverse order as detailed in the previous section on hub removal, rotate the hubThese castellated holes can also be used to replicate specific sections of a PCB circuit, making the assembly process of complex components with high pin density much simpler. The number and functionality of castellated pins is limited. Who is correct? Question 38 options: Technician A. Ranges between 2 BT832XE with ANT060 external antenna is 1350 meters. Fanstel BC805M is a Bluetooth Low Energy, BLE 5. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesEC06-IDC 6-pin Castellated Board-Edge Connectors $ 83. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 0) x22. The board is breadboard-friendly and development ready as the connection pins are 0. With 20 GPIO available (18 on castellated pins, 2 on STEMMA QT port) you can easily make up to 100-keys matrices, or common 65% 5x15 layouts. 3V variant of the family with an Arm Cortex-M0+ microcontroller and a pre-certified ESP32-based WiFi and Bluetooth®. Removing the SD card slot requires clipping at the legs, since we don't need the SD card, it. The preferred method is illustrated in Figure 2. BC832, micro Bluetooth 5. FL for external antenna, size 15x28. These mechanical components are used to secure hardware in aerospace and other applications as well as to assess whether a fastener has been tampered with. Has anyone tried using plated through-hole vias (castellated holes) as receptacles (female side) of a pogo pin? On top of that the pogo pins would need to be embedded in the pcb to be in the same height. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. Castellated Mounting Holes in PCB Fabrication. What's up guys, new to the forum. To connect it to a carrier board, you place pads on the carrier that line up with the castellations and then connect the two with solder. AN960 Flat Washer (100 pack) AN310 Castellated Nut. This repo includes KiCAD footprints for the following Teensy versions: The Teensy 4. Has anyone tried using plated through-hole vias (castellated holes) as receptacles (female side) of a pogo pin? On top of that the pogo pins would need to be embedded in the pcb to be in the same height. 22 each at 1K pcs. These slots allow for the insertion of a cotter pin or a similar locking mechanism. It still requires soldering in place, but has helpful features like castellated pins for the LED board side and 3M tape to adhere and stabilize the cable. It's the USB port which makes the Micro RP2040 stand out from rivals sharing a similar form factor, the best known of which is Solder Party's RP2040 Stamp — boasting castellated pins to all four sides of its square form factor, but having no handy USB connector for easy use without a carrier board. In the library's device editor, append both pads and the via to the same pin. Raspberry Pi Pico W pairs RP2040 with 2MB of flash memory, and a power supply chip supporting input voltages from 1. and have slots machined into the nut that capture a cotter pin passing through the nut and hole in the bolt. It has 16 castellated pins for applications needing limited number of GPIOs. The long, bent-over tails vibrated as the motor ran and started breaking off. and stripping the wire . Teensy 4. I haven't tried it but it should be possible to make something with pogo pins and a 3D printed jig to guide and hold things in place. Details. Castellation PCB is a type of printed circuit board that has become increasingly popular in recent years due to its unique design and benefits. It might take a moment for the solder to start melting, so be patient. b. The RP2040 is plenty powerful, low-cost, and makes for an excellent keeb driver chip. Here are some steps explained that show how castellated pins are created: PCB Design: In the PCB design phase, you define the shape and location of the castellated pins on the board’s edge. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. If you select the castellated pads layout, some components will not be available in. 3mm. The shock struts top and bottom were drilled bolts, castle nuts and cotter pins since they rotate some on the end of the axle and cabane vee. Portenta C33 is a streamlined module that offers the high performance of the Portenta family at a lower price point, thanks to optimizations and streamlined features. With such clips, you can quickly connect. BC832, micro Bluetooth 5. Use pliers to grab a split end and bend it around the castle nut.