Fiddy - the FTDI Clip Created by Timothy Reese Last updated on 2018-08-22 03:57:42 PM UTC
Guide Contents Guide Contents Overview FTDI is Great! Things you'll need: What You'll Learn: 3D Printing Assembly TTL-232 Instructions You're done! CP2104 Instructions You're done! Programming: 2 3 3 4 4 5 6 12 16 18 23 24 Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 2 of 25
Overview FTDI is Great! But header pins can get in the way of your next tiny project. For the benefits of FTDI, without the bulk of header pins, Fiddy comes to the rescue. Using a spring, pogo pins, and a extreme optimism, Fiddy chomps down on the headers on your Pro Trinket, delivers and receives the debugging and programming information you need, and then speeds off to a glorious life once finished. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 3 of 25
Things you'll need: 3D Printer Soldering Iron Pliers, specifically needle nose, and regular/broad Flush cutters #000 Screwdriver 4x M2 6mm Rounded head screws: McMaster (https://adafru.it/shd) 1x 3/8"x 3/4" Compression Spring: Amazon (https://adafru.it/sci) 1x 2mm thick round toothpick 6x "Spear Head" pogo pins Either a FTDI Serial TTL-232 USB cable, - OR - a CP2104 Friend, plus: Female jumper wires 1x 6-wide single row housing pack What You'll Learn: How to assemble a joint with a spring, using a toothpick as the hingepin Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 4 of 25
3D Printing https://adafru.it/scl https://adafru.it/scl You don't need to print supports for any of these files, as long as they're printed in the orientation shown below. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 5 of 25
Assembly Take a fresh, round toothpick, and first insert it into the top and bottom pieces, through past the taper. Be gentle, and if it seems stuck, you can twist the toothpick slightly like a screw. Once primed, it's time for the assembly. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 6 of 25
Place the 3/8" x 3/4" compression screw into the ring on the bottom piece, and place the top piece in alignment so that the holes line up. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 7 of 25
Now insert the toothpick into the lined up holes on both pieces. If it gets stuck, you can use a pair of broad pliers to push the toothpick through, but it's important to be very gentle or the toothpick will splinter. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 8 of 25
Once through, snip off the excess with the flush cutters. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 9 of 25
Now use the tip of the #000 screwdriver to prep the holes for the screws. Stick the tip through each hole that will receive a screw, and twist it back and forth a few times cut a tiny chamfer. This helps when using tiny screws. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 10 of 25
Laying the face flat on the table, screw in the M2 x 6mm screws until they're flush with the bottom of the face. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 11 of 25
Get out your pogo pins, it's time to add some teeth. TTL-232 Instructions Congratulations, you don't need to solder for the TTL-232 version of Fiddy. I used an excess header pin to prep the holes on the female pins in the housing case. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 12 of 25
Then, using a pair of needle nose pliers, gently push the pogo pin into the female jumper holes. Use very little force and go slow, or the pins will bend. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 13 of 25
Make sure all 6 are flush. If the plastic on one jumper becomes deformed, don't worry about it. As long as the connection is solid in the female jumper pin, you're golden. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 14 of 25
Place the toothy enclosure into the top plate slotting, with the green wire on the left side, and the black (ground) wire on the right side. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 15 of 25
Finish screwing in the face to the top. You're done! Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 16 of 25
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CP2104 Instructions Congratulations, you get to solder! Get out your rainbow pack of female jumpers. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 18 of 25
Separate out 6, and detach them as a unit from the main pack. Make sure to find a green one, to set your registry point. Snip one row of jumpers, all flush with one another, and begin by soldering the green lead (stripped and tinned) into the RTS pinout on the CP2104. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 19 of 25
Then solder in the rest. When done, insert the other end (jumpers still attached) into a 6-wide housing. I accidentally inserted my ground wire into the far right slot, instead of the far left (indicated by an arrow.) It still works, but best practice is to get the orientation correct. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 20 of 25
Then, using a pair of needle nose pliers, gently push the pogo pin into the female jumper holes. Use very little force and go slow, or the pins will bend. Repeat 5 more times to complete the smile. Place the toothy enclosure into the top plate slotting, with the green wire on the left side, and the blue (ground) wire on the right side. Finish screwing in the face to the top. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 21 of 25
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Connect the micro-usb cable to the CP2104. You're done! Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 23 of 25
Programming: Select the correct FTDI heading under boards in the Arduino software. Adafruit Industries https://learn.adafruit.com/fiddy-ftdi-pogo-pin-clip Page 24 of 25
Adafruit Industries Last Updated: 2018-08-22 03:57:38 PM UTC Page 25 of 25