Build guide for v2/v3 in the Gridfinity Box - Lemmy.World

Note: For every screw on the box and pen, you’ll want M3x5 or #4 - 1/4, depending on which size is available to you. #6 - 1/2 screws work a little better for the foot pedal, but you could get away with M3x10. Wrap a wire over each end of the battery holder and attach the battery holder to the box [https://lemmy.world/pictrs/image/33e54fc8-5738-402b-a3a8-95d0c34df390.jpeg] Solder the wires to the B+ and B- places on the charge/boost board, and adjust the trimmer pot to give 15-16v. Ignore the 18v in the picture, that’s a little too spicy. [https://lemmy.world/pictrs/image/d8c57332-d12c-46d0-9ed9-f341ca6b8345.jpeg] Once you have the voltage set, remove the battery for safety and remove the wire from the positive side of the battery holder. To prevent the battery from slowly draining, you’ll want in connect the positive side to the power switch, then from the switch to the charge/boost board. Solder the necessary components on the board. V2 values can work with what the board is labeled, plus a 500k potentiometer, 100k variable resistor for the timer, and 20k for the current .Note these important replacements if you’re working with a V3: R4 -> 220k R7 -> 47k R9 -> nothing, jumper it R11 -> 4.7k C1 -> 100uf [https://lemmy.world/pictrs/image/a7125636-1927-48ac-ad98-11151c422b8e.jpeg] Note the orientation of the variable resistor knobs when you solder them to their wires. For V2, have them pointing out from the top of the board. For V3, have them pointing out from the bottom. If you find they’re backwards from what you’d like, switch the left and right wires. [https://lemmy.world/pictrs/image/f878b9d3-c48c-4690-aa7e-f0fe816e317e.jpeg] [https://lemmy.world/pictrs/image/7c35cd5d-090c-4838-9104-f259628a6219.jpeg] Install the panel components in the lid. [https://lemmy.world/pictrs/image/c551a36b-ad18-46f4-9b17-4a3f0eceecb5.jpeg] Install the board in the box. For models with a speaker, secure the speaker as well. [https://lemmy.world/pictrs/image/0103ed0d-2756-4331-8bdd-e765f9134e50.jpeg] Solder the wires from the board to their panel components. It’s helpful to connect the anode to the red socket and the probe to the black. This will save confusion, because the anode is the positive side while the probe is negative. Push the variable resistors through their holes and LEDs through their holes. [https://lemmy.world/pictrs/image/29ef363d-af40-423c-9cc0-18e09dd97ada.jpeg] Screw the lid to the box. [https://lemmy.world/pictrs/image/14ba4fab-66fa-4ed0-a70b-53d7f5da4752.jpeg] For the foot pedal, push your wire through the openings on the pedal and mono plug. Solder the connections on the mono plug, and attack ring connectors to the pedal side. [https://lemmy.world/pictrs/image/29bffb9d-ed48-4a94-877f-3040b2f1859e.jpeg] Insert screws through the pedal from the outside and secure the ring connector with a nut. [https://lemmy.world/pictrs/image/3ea67902-d86f-4fd6-886b-c615e68212d9.jpeg] Enjoy. [https://lemmy.world/pictrs/image/c9b18c4a-7165-4c14-a01a-e0d0f1f314ed.jpeg]