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Over the next 24 hours we’re migrating to cloud hosting at Laughing Squid.

WordPress has been a fantastic (and free!) host, but we need to move. We really want the forum to be at dangerousprototypes.com, and we can’t do that with the current setup. The blog domain name is mapped in a way that only WordPress can add a CNAME record to a subdomain (i.e. forum.dangerousprototypes.com).

The DNS changeover should start in the next few hours. After the blog is migrated we’ll freeze the forum to prevent posts while we move the database. A bit of .htaccess foo will forward any old links to whereisian.com/forum to the new forum location.

Since this is the last post at WordPress, we’d like to mark the occasion with a PCB giveaway. We’ll send a free RGB color changer PCB to the first and last commenter on this post.

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We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is a PIC and AVR programming adapter for the Bus Pirate (through-hole version). It has a 5pin PIC-ICSP header and a 6pin AVR-ISP header. It also includes a small 13volt boost-converter power supply. A 13volt VPP supply is required to program PIC 12/16/18F microcontrollers. We though it might be useful for clearing the RESET fuse in AVRs too, but that part isn’t going to work (it still has a handy 2×3 ISP connector for programming AVRs though).

We’re giving away two PCBs this week. Just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is a PIC and AVR programming adapter for the Bus Pirate (through-hole version). It has a 5pin PIC-ICSP header and a 6pin AVR-ISP header. It also includes a small 13volt boost-converter power supply. A 13volt VPP supply is required to program PIC 12/16/18F microcontrollers. We though it might be useful for clearing the RESET fuse in AVRs too, but that part isn’t going to work (it still has a handy 2×3 ISP connector for programming AVRs though).

We’re giving away two PCBs this week. Just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is a PIC and AVR programming adapter for the Bus Pirate (through-hole version). It has a 5pin PIC-ICSP header and a 6pin AVR-ISP header. It also includes a small 13volt boost-converter power supply. A 13volt VPP supply is required to program PIC 12/16/18F microcontrollers. We though it might be useful for clearing the RESET fuse in AVRs too, but that part isn’t going to work (it still has a handy 2×3 ISP connector for programming AVRs though).

We’re giving away two PCBs this week. Just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is another prototype PCB for the USB infrared remote control receiver/transmitter. Unlike the earlier prototype, this version uses a USB mini-B jack. Unlike the final PCB, it doesn’t have a transistor to power the IR LED with greater than 20mA. The IR receiver is connected to a single interrupt pin, the receiver on the final version of the IR Toy connects to an additional interrupt pin with a Schmitt trigger for better noise immunity.

You can get an assembled USB IR Toy for $20, including worldwide shipping.

We’re giving away two PCBs this week. Just ask for it in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is another prototype PCB for the USB infrared remote control receiver/transmitter. Unlike the earlier prototype, this version uses a USB mini-B jack. Unlike the final PCB, it doesn’t have a transistor to power the IR LED with greater than 20mA. The IR receiver is connected to a single interrupt pin, the receiver on the final version of the IR Toy connects to an additional interrupt pin with a Schmitt trigger for better noise immunity.

You can get an assembled USB IR Toy for $20, including worldwide shipping.

We’re giving away two PCBs this week, this is the second. Just ask for it in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is the final version of the PCB for the USB infrared remote control receiver/transmitter. This IR hacking tool can visualize infrared signals on a Java logic analyzer, record and replay infrared signals, and decode them.

You can get an assembled USB IR Toy for $20, including worldwide shipping.

We’re giving away two PCBs this week, one now, and one later today. Just ask for it in the comments.

Read the rest of this entry »

s3c is tantalizing us with this mystery EEPROM device. It’s a small I2C EEPROM data storage chip, and it appears to be powered parasitically from the I2C clock line.

Was bored today so I opened a dongle I had laying around. It only contains an I2C eeprom and a couple of passives but it’s pretty smart, it uses a diode and capacitor to power the eeprom from the eeprom clock line.

Anyone have an idea what the resistors R1 and R4 are for? I’m assuming PIN1 and PIN2 are connected to Vcc through external resistors and are connected as SDA and SCL for normal I2C operation.

We’ll send a free PCB to the poster with the most persuasive explanation of the circuit.

We’ve been working on an open source logic analyzer prototype with Jack Gassett of the Gadget Factory. The project is currently known by the code name ‘SUMP-PUMP’, but you can help suggest a name. The design incorporates elements of the Butterfly platform, which is available now at the Gadget Factory.

On Wednesday we offered a free SUMP PUMP to the developer of a command line utility that could replace our Perl script ROM uploader. Michal Demin completed the challenge in less than 24hours. Piotr and Ipenguin helped with patches for the Mac. Congratulations, and thanks for the hard work!

Michal will receive a preview SUMP PUMP. You can try the app here.

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is the final version of the PCB for the USB infrared remote control receiver/transmitter. This IR hacking tool can visualize infrared signals on a Java logic analyzer, record and replay infrared signals, and decode them.

You can get an assembled USB IR Toy for $20, including worldwide shipping.

We’re giving away two PCBs this week, this is the second. Just ask for it in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is the final version of the PCB for the USB infrared remote control receiver/transmitter. This IR hacking tool can visualize infrared signals on a Java logic analyzer, record and replay infrared signals, and decode them.

You can get an assembled USB IR Toy for $20, including worldwide shipping.

We’re giving away two PCBs this week, one now, and one later today. Just ask for it in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. PCBs by Seeed Studio.

This is a PIC and AVR high-voltage programming adapter for the Bus Pirate (through-hole version). It has a 5pin PIC-ICSP header and a 6pin AVR-ISP header. It also includes a small 13volt boost-converter power supply. A 13volt VPP supply is required to program PIC 12/16/18F microcontrollers, and clear the RESET fuse in AVRs.

We’re giving away two PCBs this week. Ideally these would go to someone who can help with Bus Pirate high-voltage programming support in AVRDude, or the Bus Pirate port of USBPICPROG. Just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This is a USB controlled RGB color changing light. Ian did this project at DIY Life, a Weblogs, Inc. site that shut down about a year ago. Someone made some minor modifications to the design and had a bunch of boards produced, we ended up with a pile of the extras. This PCB is as-of-yet untested, you can discuss it in the forum.

We’re giving away two PCBs this week, just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This is a prototype PCB for an upcoming USB infrared receiver/transmitter project, it isn’t the final board. This version was used in our remote control Halloween pumpkin. It took several tries to get this board right, this is the very first. The PCB is too thin for a reliable connection with the on-board A-connector, but it also has a footprint for a standard USB B-connector.

We’re giving away two PCBs this week, just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This is a prototype PCB for an upcoming USB infrared receiver/transmitter project, it isn’t the final board. This version was used in our remote control Halloween pumpkin. It took several tries to get this board right, this is the very first. The PCB is too thin for a reliable connection with the on-board A-connector, but it also has a footprint for a standard USB B-connector.

We’re giving away two PCBs this week, just ask for one in the comments.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This is a USB controlled RGB color changing light. Ian did this project at DIY Life, a Weblogs, Inc. site that shut down about a year ago. Someone made some minor modifications to the design and had a bunch of boards produced, we ended up with a pile of the extras. This PCB is as-of-yet untested, you can discuss it in the forum.

We’re giving away two PCBs this week, just ask for one in the comments.

Read the rest of this entry »

We’ve been working on an open source logic analyzer prototype with Jack Gassett of the Gadget Factory. Gerbers will go to the board house before the end of this week.

Until now we’ve called this project by the codename ‘SUMP PUMP’, because it’s a data pump for the open source SUMP logic analyzer client. This name is far to clever though, because SUMP infringes on the name of the original project, and it won’t index well in search engines.

We’d like to hear your suggestions for a name for this project. If we choose your name, we’ll send you the final hardware for free. Post your suggestions here, or in the forum.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This week we’re giving away free PCBs for our powerful new embedded web platform. The Web Platform is available as a kit for $35, including worldwide shipping. Seeed Studio can assemble yours for $5 more.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This week we’re giving away free PCBs for our powerful new embedded web platform. The Web Platform is available as a kit for $35, including worldwide shipping. Seeed Studio will assemble yours for $5 more.

Read the rest of this entry »

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few professionally-made PCBs from one of our past or future projects, or a related prototype.

This week we’re giving away free PCBs for our powerful new embedded web platform. We’ll give away a few now, and more in a second post later today.

The Web Platform is available as a kit for $35, including worldwide shipping. Seeed Studio will assemble yours for $5 more.

Read the rest of this entry »