![]() ![]() Source: Gadget Gangster or download the design & make your own ( diptrace format) SN754410 Quadruple Half-H Driver I didn't see these at Digi-key or Mouser, but Jameco is a great vendor & they're in the Bay Area. But I prefer to use the higher quality Molex brand blocks - they have a higher rating and the screw can't fall out. If there's anything missing, just email us at 2 position Screw Down TerminalsĪ lot of folks use cheaper terminal blocks (like the square blue ones). If you've ordered a kit, double check to make sure your package has all the parts listed. You can also get a pretty nice Weller iron on Amazon that includes extra tips and solder (but no wick or solder sucker) for $15.įlip on your soldering iron and let it warm up! While it's warming up, check to make sure you have the following parts. I offer an Elenco kit that includes a 25 Watt iron, stand, wick, and a solder sucker for $25 (pictured below). If you enjoy yourself, then you can upgrade to better equipment and give your 1st iron to someone else who is just starting out. Why? Because you'll be able to get a feel for doing electronics projects without spending a lot of money. If this is your first electronics project, I suggest you start with an inexpensive soldering iron. Diagonal cutters are used to trim the excess leads from components after soldering them down. A conical or chisel tip works well.Ģ - Dikes. Leaded solder is easier to work with, and a 15-40 watt iron is just fine. You'll need a few tools to assemble the project ġ - Soldering Iron and solder. There are a ton of great instructables on how to solder, I also did a little demo video here. This is a great project to learn how to solder. Here's a video demo of Starlino's OctoDriver in action: If you're a seasoned pro, it should take longer for your soldering iron to warm up than assemble. If this is your first time soldering, it will probably take 15 minutes. At the end of this howto, I'll show you how it's done. Will the OctoDriver work with Arduino / PICAxe / Workbench 1.3? Moving anything but the smallest motor requires real power, and 800mA bridge doesn't cut it. until you actually make it move something! Maxing it out brings you to 1.3 amps of current draw. With a 6V power source, no-load draw is a measly 220mA. How much higher depends on your load, but the highest draw would be if the motor were stalled (Stall Current). In other words, if you actually wanted to move something with the motor, your current-draw will be higher. Here's the deal - that 'current-draw' number is at NO LOAD. So what's the point of a 4+ amp motor driver? When you check out the specs on a standard servo, it's often something like 150mA. I didn't include servo headers because it's super easy to connect a servo to a Prototyper module and controlling servos with a Propeller is easy, too. 2 OctoDrivers can be stacked on a single Propeller Platform, as well. ![]() 1" pin spacing for Breadboard / Protoboard. Here are the key specs of the OctoDriver OctoDriver SpecsĢ Bi-directional DC motors / linear actuators, or 1 stepperĮSD Protection, Thermal Shutdown, No 'Power Up Glitch' The SN754410 is 'juiced-up' version of the classic L293D. It uses four TI SN754410 ( datasheet) Quad Half-H drivers, 2 per motor. The OctoDriver is an 8 amp motor controller, capable of controlling 2 motors 8 amps. The OctoDriver is also available as a kit from Gadget Gangster.įlip to the next step and I'll give you some more technical details on the OctoDriver and show you how to use it. The design is available under the MIT license, so anyone is free to hack away. I also put it on a Propeller Platform compatible footprint, so it can be used on a breadboard, perfboard or with a Propeller microcontroller. I couldn't think of a better name, so I call my version "The OctoDriver". I asked him if I could put it on a PCB, and he thought it was a great idea. He calls the circuit the 'OctoDriver', it combines 2 h-bridges to provide 8 amps peak, 4 amps continuous. His idea is pretty simple: why not combine 2 motor controller IC's to split the load? So I've been on the lookout for a high power, inexpensive, and easy to control circuit - I was flipping through starlino's website and I spotted exactly what I was looking for. Pololu makes beefier motor controllers, the DMC 01 can do 13 amps, but it's pretty expensive (about $100). ladyada's Arduino shield only does 600mA continuous, 1.1A peak. ![]() The problem is that a lot of the inexpensive motor control shields are just too meager to control anything but the most dinky motors. I've been working on a dogie door for a while - while the software is straightforward, finding a suitable motor controller has been more difficult. Connect it to your Arduino, Propeller, or PICAxe to control more powerful motors! The OctoDriver is an open-source 8-amp Motor controller. ![]()
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