AC 43. Edge-Connect™ – The Leading-Edge Connector! The EC10-IDC is a 10-pin Edge-Connect™ connector terminated in a 10-pin 0. Cotter Pins and Safety Wire. . Posted February 7, 2020. The preferred method is illustrated in Figure 2. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. It has 16 castellated pins for applications needing limited number of GPIOs. The $5. Includes two 1x12 pin headers, two 1x12 socket headers, a 1x5 pin header, and a 1x5 socket header $ 25 $8 US Shipping / $18 Worldwide In stock. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 83; asked Mar 1, 2021 at 20:18. 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. $10. 1. 50 ; a version with breadboard-friendly male headers pre-soldered is also available for $25. Sometimes, users may have different pin layout requirements. Single-chip USB to UART bridge provides transfer rates of up to 3. SparkFun and Adafruit also sell Pogo Pins. 2 GPIO on QT port that can be easily accessed for 5x15 keyboard layouts. size: Quantity: Add To Cart. TabBar background color not set. This direct conductive path ensures proper signal transmission and reduces the risk of signal. NanoS3 TinyS3 ProS3 FeatherS3. You can twist a Castellated onto the end of a bolt. MX 8M Plus application processor board. LGA pads are cool too but you run the risk of solder shorts underneath. These boards typically provide a simple interface, such as a set of pins. However, there is a potential for a different DRC issue. Remove any castellated retainer. These holes are then plated with a conductive material, such as gold or copper. Removing the SD card slot requires clipping at the legs, since we don't need the SD card, it. It would be a simpler solution than the others. Slots (called castellations) in the nut are designed to accommodate a cotter pin or lock wire for safety. By adding a push button and a pull-up in Io0, you can control when to program your module. Sold By All Each. • Half holes with small cuts. 8x1. I noticed the castellated pins are only 1. Rather than an RP2040 microcontroller with its two Arm Cortex-M0+ cores running at up to 133MHz, though, the. Maximizes available PCB real-estate. SMT equipment is not required for soldering castellated pins. 65mm pitch would also be ideal. 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. Using these castellated holes, we can change the pin layout of the component as we desire. 54mm adapter, by bending odd pins 90° right and even pins 90° left in. Use the largest hole size possible; Use the largest Outerlayer pad possible, both top and bottom sides ; If possible, place Innerlayer pads to anchor the hole barrel. 9mm. 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. Castellated Mounting Holes in PCB Fabrication. Operating at 3. If you need smaller castellated holes (as low as 0. Castellated Grounded Seal Ring: VLLD: Alumina: ENEPIG: Yes: QFN-8848. These slots allow for the insertion of a cotter pin or a similar locking mechanism. Hackaday. Castellated PCBs can make small modules and breakout boards. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. The manufactures have consolidated many parts, i. 54mm pitch castellated pin headers making. Castellations are small plated edges, typically used for making circuit boards into small pcb modules. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. Yes castelated pins are not possible without setting “allow DRC violations”. Added to your shopping cart $ 82. These are often seen on wireless modules, such as the. 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. Slowly feed solder into the space between the iron's tip and the pad. Castellated nuts are fasteners that are designed for use with a pin-based locking fastener. Here's a module with castellated pads attached to an eval board: Looking closely at the wires interfacing with the castellated pads, they're clearly soldered to the eval board. Like the castle nut, it is castellated for safetying. Pad placement on castellated circuit board. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. In addition, these holes make mounting PCBs easier and. 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, etc(screws) drilled for cotter pins, using castellated nuts, cotter pins, and large secondary washer retention devices. What’s more, the module’s form factor is compatible with the Portenta and MKR ranges and features castellated pins – ready for automatic assembly lines and more efficient connections to. Soldering the devboard is easy with the castellated pins but it can be a bit too big to incorporate in some designs. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 50. Technician B says split pins are often made of hard metal. PCB Library Expert can intelligently create the footprint for you based on the module's dimensions. Who is correct? Question 38 options: Technician A. These are often seen on wireless modules, such as the ESP8266-12E. 4) over clockable to 256Mhz (spec is 216Mhz) (original STM32F103CB is 72Mhz) 5) 32K of ram. BC832, micro Bluetooth 5. 2. 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. The $5. 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, etcWith 20×20 castellated pins, the module also has a USB Type C 5V power input with serial debug port and battery-powered input options, standby power mode, as well as 3 pin SWD pins for development and debugging. 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. (2017) conducted DEM modelling to compare flat discs to castellated rotors. For the standard PCB service, the minimum diameter of castellated holes is 0. 50 . Castellated nuts are a positive locking device that’s used to ensure that the nut remains affixed and resists vibration. Max. I normally use a heatgun and a. Castellated module allows soldering directly to carrier boards; USB 1. I would love to see an RP2040 in a 32QFP package with 0. In this post, we will discuss How to Design a Castellated PCBs Board in 2023. SKU. Adafruit mixed together what they liked most about the SparkFun Pro Micro RP2040 (Qwiic / STEMMA QT I2C port on the end, so good!) and Elite-C (castellated pads & pins for D+ and D-) and their existing RP2040 boards (boot button can be used for user, 8MB QSPI flash, onboard NeoPixel, jumper for skipping the diode/fuse for high power RGB LEDs or. 2. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. and have slots machined into the nut that capture a cotter pin passing through the nut and hole in the bolt. With such clips, you can quickly connect. The castellated PCBs are capable of replicating specific components on a circuit board. Electrical connectivity: The castellated pins establish a dependable electrical connection between the PCB and the components. 8–5. However, the tutorial only concerns about. e. Castellated nuts mounted on bolts may be safetied with cotter pins or lock wire. Furthermore, along with an extra Serial Wire Debug (SWD) connector which is added to the bottom of the board, the pins are brought out to the. The RP2040 can only provide a total of up to 16 controllable. The castellated hole’s minimum diameter. Plated half holes are available in both standard and Advanced PCB services. forencich' and '@Tony Stewart Sunnyskyguy EE75' these parts are called castellated edges, castellation, castellation. Additional 24 LGA (Land Grid Array) pins provide access to all nRF52810 GPIO pins. Typically, these are applied to the outer edges of a board, and are used to solder one board on top of another. Pin Functions BT680F module has 16 castellated pins for product needing limited GPIOs and additional 24 Land Grid Array (LGA) pins. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesFeatures castellated pins for automatic assembly lines; Overview. The castle nut, AN310, is used with drilled shank AN hex head bolts, clevis bolts, eyebolts, drilled head bolts, or studs. The correct way to install a split pin is to first tighten the castellated nut and align its slots with the hole on the screw or bolt. The dash number following the AN310 or AN320 indicates the size bolt that the nut fits. It has 16 castellated pins for applications needing limited number of GPIOs. Castellated Mounting Holes in PCB Fabrication. For the standard PCB service, the minimum diameter of castellated holes is 0. FL for external antenna, size 15x28. 1″ standard pitch and the castellated holes for SMD mounting and. (📷 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. The pin header along the back side of the castellated holes also allows through-hole mounting to a carrier board. Castellated Nuts, or castle nuts, are specialized types that feature three notches on one end, giving the component the appearance of a castle battlement. (The reason is that since version 5 the edge cut layer is checked by DRC. 14 castellated pins, easy for production. Plated half-holes or castellated holes are plated half holes with half on the edges of the board. 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. Physically the QT Py is less than 1” square at 20mm×17. In addition to a bolt, they require the use of a pin. Of these 14 pins, 11 can be analog inputs or digital I/O. 2 Castellated Pins The diagram below shows the top side of Chronos: Pin # Pin Name Pin Type Description If not used Notes 1 DVI_WA0 Digital I/O Digital audio Leave open 2 DVI_RX Digital output Digital audio Leave open 3 DVI_TX Digital input Digital audio Leave open 4 DVI_CLK Digital I/O Digital audio Leave openCastellated module allows soldering directly to carrier boards. BC832. • 16 castellated pins for application needing limited number of IOs. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. 2) 3 LEDs R/G/B (vs just the G for a bluepill) 3) Clone of ST's peripherals. 4GHz. One pin has a true analog output as a 10-bit DAC. Easily change the pin layout of components. Welcome to a new Voltlog, in today’s video we’re going to be talking about castellated holes and how you can create them in your CAD tool. scrollEdgeAppearance = appearance. Commonly used software areAltium Designer, Eagle, and. pcb; pcb-design; pcb-fabrication; panel; panelize; pcbguy. These holes give designers an easy time when they want to change the pin layout. Spring Pins. Do not drive any digital pin higher than 3. Physically the QT Py is less than 1” square at 20mm×17. GPIO pins can be configured by firmware as UART, SPI, I2C, ADC, or PWM pins. Instead, castellations bring the circuit nodes to the outside PCBA edges without any extra hardware. 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. Fanstel BC805M is a Bluetooth Low Energy, BLE 5. Product Type All Cad plated Stainless steel. 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. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. Additional 24 LGA (Land Grid Array) pins provide access to 29 GPIOs of nRF52832. 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. For applications needing limited number of IO pins, prototyping and production are easier using 16 castellated pins. The castle nut is used with drilled shank hex head bolts, clevis bolts, drilled head bolts, or studs that are subjected to tension loads. 3mm. If you select the castellated pads layout, some components will not be available in. 2mm pitch. 2. In cholz's question, the answer refers to a SparkFun tutorial. Sometimes, users may have different layout requirements for their contacts. 2 module using Nordic nRF52805 SoC with integrated antenna. 2 GPIO on QT port that can be easily accessed for 5x15 keyboard layouts. Most In Stock Items ordered before Noon CST ship same day. Portenta C33 can be at the heart of industrial IoT gateways, connecting devices, machines and sensors to collect operation data in real time, and display them. Like the castle nut, it is castellated for safetying. The holes are typically small and closely. Adafruit mixed together what Adafruit liked most about the SparkFun Pro Micro RP2040 (Qwiic / STEMMA QT I2C port on the end, so good!) and Elite-C (castellated pads & pins for D+ and D-) and Adafruit's existing RP2040 boards (boot button can be used for user, 8MB QSPI flash, onboard NeoPixel, jumper for skipping the diode/fuse for high. 0mm. 17. BC832, micro Bluetooth 5. Given an unknown PCBA with an ARM processor, odds are good that it will have either the standard 10 pin 0. 2 module, $2. Please follow and like us: tags Arduino Portenta C33. 14 castellated pins, easy for production. 50. With a finer pitch, I'd use a thinner board though (like 1mm thick). Castellated nut used with drilled shank bolts to accept cotter pins, safety wire or clips. Castellated edges are commonly used on RF, WiFi, BLE and IoT sensor modules making them suitable for soldering as an SMT component onto host PCB’s using the castellated holes as pins. The topic of castellated pins has come up a couple times before in this thread. • 16 castellated pins for application needing limited number of IOs. io Reaches 50,000 Registered UsersTwo types of pins are available to meet different application requirements. BC832, micro Bluetooth 5. io user Ankit Bhatnagar designed this pogo pins-based adapter for programming ESP8266-12E SMT modules without having to solder directly to the modules. Nylon lock nuts on the gear to fuselage attach and cabane Vee attach. 3 Combo Matter IoT Module. SparkFun’s Pro Micro RP2040 looks to be the ideal form factor for those that need lots of GPIO pins, castellated edges and a Qwiic connector. The modules are housed in 14x16x1. This uncommon commonality is a boon for an. Leadless Chip Carriers (LLCC) packages are characterized by external connections consisting of metallized inset terminations (a castellation), making the package resemble a miniature castle. Our robust PCB module test sockets have a variety of customized layouts optimized for use across multiple test applications. BC832, micro Bluetooth 5. Those boards are designed to be soldered directly to pads on another PCB like the esp32 breakout boards. Elsewhere, the specifications are unchanged: It's driven by a Microchip. nRF52832 + SKY66112 module with an u. 06" x 0. If the board is powered via USB (i. The Pico can then be placed using through-hole mounting and soldered for a secure mechanical. Castellated nuts are distinguished from other types of nuts by their use of a pin. 3V Voltage Regulator Castellated PTH pin pads Reset button Maximum 6V input Page 1 of 1 Start over Page 1 of 1To push against the castellated pin headers of a Raspberry Pi Pico or wireless-capable Raspberry Pi Pico W, the FlexyPins which are available as an extra are soldered into the board. SMT equipment is not required for soldering castellated pins. Castle nuts are used in conjunction with a cotter pin to prevent loosening. 2 module, $2. Slots (called castellations) in the nut are designed to accommodate a cotter pin or lockwire for safety. They are called castellated holes. For a flush connection, we recommend cutting the male header pins and stripping the wire. LEADLESS CHIP CARRIERS. 3k. The pin will essentially hold the castellated nut in place. Thread Size All 1-14 1/2-20 1/4-28 10-32 3/4 -16. (my own design also carries a max485 IC) I have a PCB design ready to order with smd assembly but it would mean a bulk order which sets me back like atleast €450,- I am not yet ready to start with the mass production. Castellated nut. Also, it’s easy to mount castellated PCBs on another to make a final product. Specifications:Header pins are referenced to the VDDIO pin which can either be generated internally with a programmable voltage or fed externally. My understanding is that castellated pins are formed by drilling the edge of a PCB then plating, similar to a. 20 x GPIO pins with following capabilities: 18 GPIO on castellated/pin breakout pads. Based on size, are the castellated nuts to be torqued to the same values as the standard AN bolt / locknut combination (say, 20-25 inch lbs. But if you find yourself mystified by castellated pads, take a look at this pogo pin programmer built for ESP8266s. The board also uses the same castellated pin headers as the Raspberry Pi Pico, meaning it can have pins soldered into place or be surface-mounted on a carrier board as a module. Use pliers to grab a split end and bend it around the castle nut. You can twist a Castellated onto the. Thanks for comments, if this is a really. FIGURE 3. There are very little documents on how to design the pads for receiving the castellated daughter boards. 2 Module for $3. b. Straighten the split pin and pull it out with pliers. SMT equipment is not required for soldering castellated pins. 50 each at 1 pcs; $2. It provides 26 GPIO pins, three of which can function as analogue inputs, on 0. 2 module using Nordic nRF52805 SoC with integrated antenna. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesTwo types of pins are available to meet different application requirements. That is by design! The power and charge LEDs and corresponding resistors drain the battery, so they've been isolated to the 5V power domain so they will. Availability: Samples. A chip antenna is integrated. First the front driver side axle kept pulling out of the differential. Stock Size Chart. The castellated pins on the sides are easy, but what if the SWD connections under the board are to be used? I see how this can be done when you can use wave soldering, but I do not have access to such a system. Wood Rolling Pin, 10 x 1. Schematic and footprint. CABLE RETENTION METHOD " s ~g~-CONTROL '. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. Tests are performed on. Castellated pins at 1. 8x1. 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. Non-plated thru-holes on the UUT are used for fine alignment of the device to the pogo pins. With a 2 dBi antenna, the maximum radiated power is +31. Additional 24 LGA (Land Grid Array) pins provide access to 29 GPIOs of nRF52832. Specifications:Edge-Connect™ – The Leading-Edge Connector! The EC10-IDC-050 is a 10-pin Edge-Connect™ connector terminated in a 10-pin 0. It is a QFN style 29 mm square system. 27mm. The solder should melt, and you will end up with a little mound of solder on top of the pad. It allows for easy insertion and removal of modules without the need for soldering. BC805M, the $1. 20 x GPIO pins with following capabilities: 18 GPIO on castellated/pin breakout pads. The nut is attached and a pin is passed through the notches and the hole in the screw, preventing the nut from turning. Since iOS 15, all nav bars are transparent by default. 95 Add to cart; TC-XILINX6-M Xilinx 14-pin 2mm to 6-pin 0. e. Setting it to 0 still does not allow a route to start from the pad. Hey hey, the stock Pico has castellated pins, so it's fairly easy to directly solder it onto the pcb directly. 3 with NFC module using Nordic nRF52832 SoC. Think about an Arduino hat or shield board form factor; instead of using pin headers to mate two boards, you can design the main board with castellated pads to mount an array of castellated holes. 8V (USB's 5V minus a Schottky diode drop). BC832, micro Bluetooth 5. These holes give designers an easy time when they want to change the pin layout. The redesigned board includes through-hole and castellated pins. The use of LLCC packages is not. 1 module BC840M, BC840, BC840E, Compact nRF52840 modulesAdditionally, castellated holes make changing pin layouts of components easy. Castellated Power and Reset Pins USB Power Pins These nets consist of the following: V is the voltage provided from the USB connector. Re essential, yes, why do you think engineers will have gone to the effort of calculating, sizing and drawing the parts with split-pins, castellated nuts and having the thread drilled when it is not necessary? Those fixings can loosen over time. History of Castellated Holes Castellated holes are used on small modules as an alternative to pin-header mounting. alignment with the cotter pin hole at the minimum. 50 each at 1 pcs; $2. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. SMT equipment is not required for soldering castellated pins. Specifications:SKU: 40385. A simple repository of files needed to add a 3D footprint of the Raspberry Pi Pico board to KiCad. I too was schooled to move the nut to the closest location for the hole in the rod bolt. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. Non-plated thru-holes on the UUT are used for fine alignment of the device to the pogo pins. 0) x22. Sold By All Each. Lids are available from the factory. • Half holes. Two types of pins are available to meet different application requirements. Unfortunately, the Teensy does not come with castellated holes (like the Photon or most wireless boards): A pin is used to hold a castle nut in place, in addition to being tightened onto the end of a bolt. Nuts used with cotter pins for positive locking. 1 Modules, BT40/F/E Ver 0. 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, etc FlexyPin is a connector pin designed to be used with castellated modules with pitch down to 1. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. appearance(). 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. Size: 10. Two types of pins are available to meet different application requirements. We will walk through two key points that render many castle nut bolted joints ineffective and unreliable. This can result in lower signal loss and improved signal integrity, especially in high-frequency applications. The majority of the RP2040 microcontroller pins are brought to the user IO pins on the left and right edge of the board. All pins can be set with the pulse width modulation (PWM) functionality, which allows for a form of analog output. These pins are typically. 1) Castellated pins with flat underside for use as a module. BT40F mechanical drawings, top view 8SparkFun Qwiic Pro Micro - USB-C (ATmega32U4) - Compatible with Arduino development board 5V/16MHz microcontroller AP2112 3. There is a free Lite version. torque plus the friction drag. Integrated shield to resist EMI. I saw this announcement for an i. 2 module, castellated pins BC833M, BC833E, nRF52833 BLE 5. To ensure reliable manufacturing and assembly, it is important to have castellated holes with good mechanical strength that prevent issues like delamination. Bolts must be drilled for pins. See any footprint in the official lib with suffix _ThermalVias. The castellated hole’s minimum diameter should be around 0. $9. How to create a break away to cut the board?Qwiic Haptic Driver board's castellated pins. Thanks to its headers and castellated pins, Nicla Voice is ready to go from prototype to industrial-scale production, easily integrating with custom carrier boards. Just put High lifter A Arms and 2" lift. Breadboarding a castellated SMD daughter board. Wish List. 1 pins accept 0 to 3. . 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. Castellated pins; Wide variety of peripheral interfaces, including CAN, SAI, SPI, and I2C; What’s more, the Portenta C33 is born into an extensive ecosystem that comes not only with a variety of. Add to Cart. The most common type of locking device is the cotter pin. Price is $11/pair before June 1st, $15 a pair afterward. Depending upon the application, instead of half holes, they may also look like a small or larger portion of a broken circle. And this is only for prototyping. 27 to 2. BC832, micro Bluetooth 5. This uses version 2 of our patented literal edge of the board connector which is smaller and more. Haven't been able to ride since. For applications needing limited number of IO pins, prototyping and production are easier using 16 castellated pins. Except the 19 pins in solid black dots, BT840F and BT832F is hardware pin to pin compatible. BC832, micro Bluetooth 5. This design is used almost exclusively in shear situations, although some joints such as axle nuts do employ some degree of pre-load to hold bearings. Size: 12x20. You're doing it backwards if you're trying to SMD-mount these modules: You get Wireless and high-speed boards with castellated edges, because it's easier and cheaper to make one small board with many layers, on-board antennas, impedance matching and so forth, instead of directly putting your components on your main board. When correctly installed, the cotter pin hole should align with the slots (castellations) in the castle nut. If at 75 ft-lbs you are not on a hole, back the nut off to. For a flush connection, we recommend cutting the male header pins and stripping the wire. Finally, a Qwiic connector is populated on the bottom of the board to easily add Qwiic enabled I 2 C devices to your projects!Designing PCBs With Castellated Holes | Voltlog #335. The holder would be laser cut or 3D printed I would assume. Renesas R7FA6M5BH2CBG microcontroller. Sometimes, users may have different layout requirements for their contacts. Super Atv sent axle stenders. 1″ pitch female IDC. RAW is the unregulated voltage input for the Qwiic Pro Micro. It doesn’t offer quite the same rigidity as regular holes. The followings are configurable examples. This design is used almost exclusively in shear situations, although some joints such as. Size of BT832AF is 15x20. They are also popular as spindle nut or castellated nuts. If the. Castellated holes are advantageous when it comes to changing the pin layout. BT, Feature Upgradeable, BLE Range to 4500meters+ BT Series, 18 modules with compatible footprints, support BLE 5/5. • Operation voltage: 2. Using the contacts from a PLCC socket, design a custom holder for the pins that will present them in the required position. SparkFun’s Pro Micro RP2040 looks to be the ideal form factor for those that need lots of GPIO pins, castellated edges and a Qwiic connector. Fortunately, I caught the problem before damage occured, but many of the nuts had lost both tails.